Fixing Failures with the Sig P365-380

[@zachjensen4252]

I think it's hilarious when Guntubers say most 380 users are disabled or have weak hands. I shoot with a small club of mostly marine vets (I am not one of them), who boast that they shoot 380 because they just didn't get caught up by all the 9mm hype, and it's a more enjoyable round to shoot, while still being plenty powerful to down an attacker.

[@127AFS]

It's a similar situation with me! I'm a younger person with fairly strong hands, and I wouldn't describe myself as recoil sensitive. But I still don't have a problem carrying a P365 in 380 every day. Why? Because it is actually enjoyable to shoot, which means I'm excited to practice with it more often. It is also so easier to be accurate with it, especially shooting one handed. This gives me greater peace of mind carrying it compared to a 9mm that would forfeit most of these advantages for just for a little "more power." To feel the same way about a 9mm, it would need to be bigger, which ruins the concealment ease I enjoy with the 380. Using +p Underwood Xtreme Defenders, I personally feel like I'm well armed for the majority of 2 legged threats.

[@allensharp6876]

Recoil sensitivity does not equal small testicals.

[@johnswag7083]

P365 380 is my edc... 1000 rounds. Zero cleaning and maintenance, zero issues. 90 gr bronze ammo. I can rapid fire without losing my red dot... P365 380 is the true micro goat.

[@buzz6925]

Physics guy here. Instead of comparing the slide velocity to the muzzle energy of each ammo (one half mass times velocity squared), have you considered comparing the slide velocity to the momentum (mass times velocity) instead? The momentum imparted on the slide from the round being fired should be a better determining factor with the velocity of the slide due to the conservation of momentum. You could even calculate the momentum imparted on the slide from the round being fired by calculating the momentum of the round and dividing it by the mass of the slide to find its theoretical velocity. Lighter and faster rounds tend to have more energy but slower and heavier rounds tend to have more momentum. That might be why the heavier but slower federal load worked instead of the lighter and faster one, more momentum.

[@LuckyGunner]

Yes, momentum would probably be a better predictor of slide velocity. However, an observation that was inadvertently cut from the video is that while low slide velocity leads to ejection failures, the inverse is not always true. Some loads with high slide velocity also had poor ejection. So while it might be useful to be able to predict slide velocity, there is still no guarantee that a momentum calculation would automatically lead us to the most reliable loads.

[@buzz6925]

⁠@@LuckyGunnerOk thanks for the reply. Love the videos you guys make. Keep up the good work!

[@The-BCC]

@@LuckyGunnerSo basically what I’m hearing is, this .380 has a more narrow window of operating function vs it being on one end of a wider window of momentuming function? Where if it was at the end of a wider range, changing the recoil spring could get/change it to be in the middle of the operating window…

[@MRsolidcolor]

To long didn’t read

[@nicholasbusic815]

I'd suggest impulse as a better measurement. The slower bullet has a slightly longer dwell time in the barrel, more time with higher pressure should impart more force on the slide in the end, and thus a higher velocity.

[@ByronGoes]

I greatly appreciate your methodical approach to investigating and documenting issues!

[@kevint1911]

We can always count on Chris and Lucky Gunner for a thorough and objective review.

[@SomethingCompass]

I have this 365-380 and I love shooting it: Holosun 407k, Wilson Combat grips, WC weights, 12 round mags. I mostly shoot S&B, magtech, and fiocchi. My first box was an off brand of ammo and that didn't work well, but everything else has been perfect. It also shoots Sig V-Crown 90gr JHP ammo for short barrels just fine. I have almost no grip strength, and this gun is a joy to shoot and it never has a problem. - I also have an XL 9mm with the same set up, and that gun has never had a malfunction. - Thanks for this video. This is an interesting topic and something to be aware of with this 380.

[@pondkelemen4495]

I have the same set up with the same results

[@SomethingCompass]

@@pondkelemen4495 It is good to hear that there is somebody else out there with the same setup enjoying good results. Thanks for letting me know.

[@lecruset]

Any luck with Speer Lawman and gold dots? I'm not sure if you had a chance to try that brand. I'm only asking because I've been on the fence with picking up a 365 in .380 and I have a ton of speer ammo. Thanks.

[@SomethingCompass]

@@lecruset I didn't fire Speer Lawman or gold dot, but I am confident that this ammo will be fine. Next time I go to my local gun store I am going to pick some up. I fired all of the brands of practice and self-defense ammo that were available during the great ammo shortage, and all of it worked fine except Ammo Incorporated. But that was the first box I fired, and the problem could have been me getting used to the gun. And like all Sigs, there is the usual break-in period as the springs get broken in. It took maybe 300 rounds to break in the gun properly, and about 100-200 rounds for each mag. I went with Sig ammo for self defense because it is designed for short barrels and I have seen good test results on KZbin. I got nice tight groups with that ammo, but all other brands were fine. My experience is that Sigs can be picky with lower-tier brands. - The 380 will be difficult to rack when new, but it gets very easy after the gun has been broken in. - My XL fired every shot without any malfunctions, but some off-brands have a point of impact that is significantly off the point of aim. All of the well known brands have been fine. - Both the 380 and the XL feel much better to me with the WC grips and the 3oz weights. They feel more balanced that way, and I can get a much better grip (I have almost no grip strength). The 380 is the fun gun to shoot at the range, but I trust it completely in a self defense situation. I was surprised at how tight the groups were out of that tiny barrel, and how easy it was to get follow up shots. Also, the 12 round mag fits my hand, but that might not be enough space for people with very large hands. - You can also put the XL grip on the 380, and swap out the base-plates on the 12 round 380 mag to fit it. I have also fired my 12 and 15 round 9mm mags through my 380 without a single malfunction. I am going to experiment with a macro grip whenever WC offers it for sale, but as of today there isn't a 17 round 380 mag available, so I will be stuck with using a 9mm mag on a 380 gun. - If you can find a 365-380 to rent at a range I highly recommend it. The selling point for me is that it is a joy to shoot, and as I get older I will eventually transition to it as my only self-defense carry gun. - Good luck with whichever 380 you eventually buy.

[@DadHominem]

Thanks for the video. I have the 365 in .380, but no optic - and I have had zero malfunctions with the 4 different ammo choices I have used on it. I'll watch out for problems, but about 800 rounds in, it has cycled everything I've used - including reloads from one of the big online ammo warehouse stores.

[@dustinssimpson]

Same...I run everything from it no issues

[@Neaptide184]

Lots of variables in shooting a pistol. I have pistols that almost never fail after years of shooting them, reloaded ammo, factory…. Put some of them in the hand of a timid small statured shooter, ….. and then they stop being as reliable. Buying the .380 X-change for my p365, should be interesting to see how it does.

[@ScreechingPossum]

Just to add another experience here: I *DO* have an optic on mine, and was experiencing a failure or two every 50 rounds (PMC and Remington) until around 350 rounds. That's pretty high for a 'break-in' period, and one failure to extract was so bad that I had to use pliers to get the shell out (the extractor was grabbing it, but it wasn't enough) I really did not care for the 9mm P365 and want this to work. I'm up to +400 rounds now, and just an assumption off of 10 rounds of Underwood +P and Civil Defense +P, I would assume it will like the overpressured rounds. Hearing this channel claim hollowpoints all worked is comforting, but I did have failures with PMC while he didn't. :(

[@oldcop18]

Good evaluation of this .380 and these are all the reasons I prefer my J Frame for EDC.

[@jbarbeau92]

Love stuff like this, and really appreciate the no-frills presentation compared to so many other people who make firearms related content.

[@GBGuns]

Great visualization of something I've been trying to explain with words to folks.

[@ralf.mareni]

I had the same ejection issue with my Ruger LCP Max, and going with Federal HST solved the issue. As Chris mentioned, it’s worth doing the extra tests to ensure reliability.

[@matthewbeaver5026]

What ammo did you have trouble with? I've only ran federal and blazer FMJ (95g) through my max. Haven't had any function issues to this point. Testing JHP found the sig vcrown (90g) open nicely Whereas the cheaper sports master Sierra 90g didn't open at all in the short barrel. Being Sierra projectiles I expected good things but apparently they make good bullets not so much on cartridges

[@CarolinaRimfire]

I struggle with math, so I carry a snub nose revolver

[@Hawk-ODA212]

Good choice.

[@khendrdik]

I have to believe that the weight of the red dot sight is a factor. I would like to have seen the same series of tests run with it removed for comparison.

[@NOT_A_TOP_FAN]

yep. I have a glock 42, and sometimes wonder why they don't make an MOS verision.. And I guarantee it's because of the red dot weight mixed with the sensitive ammo, make it too unreliable for Glock to release an MOS version....

[@barney214]

I have put about 650 rounds of various brands of ammo thru my P365 -380. It has problems feeding and ejecting Winchester white box FMJ 95 grain with the flat tip bullet. Every other type and brand functions fine. I don't have an optic on the pistol. My Sig P238 (I love this little pistol !) and Colt Mustang also have feed problems with the Winchester round. Thanks for your video.

[@rensuchan]

Thanks for this video. Both my lady and I have a P365-380 and I suspected it might be her weaker grip that was behind her having far more failures to feed / eject than I do. We ran some mags of Underwood Extreme Defenders and haven't had issues, but I need to buy more to have her run more of it. I just bought an optic for mine so we need to head to the range again anyway.

[@Hawk-ODA212]

I had frequent cycling issues with my new Walther PPK 380 a few years ago. I switched out the standard 20 lb recoil spring and put in a 17 lb recoil spring I purchased from Wolff. This obviously resulted in higher slide velocities. With the exception of Sig flat nose FMJ having a FTF, I have had zero cycling issues. I have hundreds of rounds and varied ammunition including Blaze FMJr, Magtech FMJ, Hornady Critical Defense, Hornady XTP, Federal HST. I purchased some G9 External Hollow Points I want to try next. But so far, the lower weight recoil spring seems to have remedied the cycling issues.

[@Kelly-oq9nh]

Excellent review. Your time and efforts in producing these videos is much appreciated. This video judge gives you a 10.

[@e7tegt503]

Defensive Hollow points tend to be loaded up to max Saami spec. Makes sense they’d have the guts to cycle reliably. Thanks for the great video.

[@StraightUnderFireReviews]

My .380 p365 is my back up handgun, but I did have recoil spring issues. I went and experimented with Galloway precisions 9mm spring assembly and I haven’t had many if any stoppages. I was surprised because it’s for the bigger caliber but it continuously works

[@DWalter.27]

Personally, I prefer a j-frame for my small gun. It still runs with a bad hold on the gun and you can get whatever grips your hands like. Not everyone enjoys them or puts in the time to shoot them well; and they have other downsides too. So they aren't for everyone... but they do work really well for me

[@leslovesliberty1776]

I've run several thousand rounds through my .380 P365 with a variety of ammo & have never had a malfunction, it is seriously the most reliable, comfortably-shooting firearm I've ever owned, I absolutely love it!! If I had one complaint I would say the trigger guard is quite large, I've tried several lights & am unable to reach the on switch without adjusting my grip (for reference I am a 5-foot tall female with arthritis & pretty small hands).

[@Bristecom]

Get the SIG FOXTROT365 Light or Laser. It was designed for it and is squeeze activated. It's a bit pricey but excellent.

[@virtus12ful]

Just got the P365-380 two weeks ago - 94 grain FMJ from Monarch that I had in the safe ran flawlessly. I tried 10 rounds of SIG 380 Hollow Points, which resulted in 3-4 failures to feed/extract. I’ll have to try some Hornady/Sierra that I have as well to see if those loads improve on the HP side of things.

[@dredre0702]

Great videos. This is the type of content that gives responsible gun owners a good name. Keep up the good work

[@tomsanders6267]

Excellent video. I just bought one and will be putting it thru its paces in a few days. I spent 34 years on the street so I have no illusions about handguns in general but Ive gotten old and lugging around my 10mm's or .45's have gotten old too. Plus Im a pretty good shot, have good situational awareness and just aren't in high conflict environments anymore.My little .380's beat not carrying anything.

[@AustinofDivebomb]

I think the Ruger Security 380 has proven to be a reliable 380. Slightly bigger gun but it’s very nice to shoot. Would like to see you review it if you haven’t yet.

[@Moresco24]

I was wanting that one because of the larger size, looked on Reddit and it has so many issues. Most were fixed by polishing the feed ramp but still most said they had some issues even after that

[@AustinofDivebomb]

@@Moresco24 that’s interesting I have had zero issues with mine and has been 100% reliable.

[@AEtrane]

Sounds like Ruger 😂 if you get a good one, it's 100%. If you get a not-good one, it's shit.

[@AustinofDivebomb]

@@AEtrane mine hasn’t had a single malfunction.

[@AEtrane]

@@AustinofDivebomb nor has mine. My lcp2 eats everything I feed it, and can hit steel at 25 yards with it's diminutive sights, if I do my part. My buddy's lcp max, however, jams like a session musician and hits over a foot low at 7 yards, despite it's superior sights. Two trips back to Ruger, and it's only gotten marginally better. Like I said, if you got a good one, you got a good one.

[@weekenddistractions]

Great video. I have found that both the P238 and P365-380 want the ammo loaded near the max range in the reloading manual. Once you do that, they cycle reliably. For other calibers, I usually stay near the low end of the charge range with no problems. I spent quite a bit of time trying to figure out why both of the .380s were so prone to malfunctioning. Loading hot solves problems for both with the P238 generally accepting lower charge weights. I've done all my testing with 90 and 95 gr projectiles of various profiles. Loading near the max charge weight solves the problem for all bullet shapes. For carry, I have settled on the Lehigh 90gr penetrator. It cycles flawlessly in both so long as you load near max. For .380, I think the penetrator is good compromise between over penetration with FMJ and HP bullets not expanding. Note that Lehigh says the 90gr *defender* is NOT designed for use in the .380 and should not be used. Loading for these .380s was the most frustrating thing I have encountered in 20 years of reloading. But I think I figured it out. Also, the experience with this 365 makes me realize that if I get one in 9mm, I'm going for the XL.

[@bwofficial1776]

I wonder if it would be worth going with a lighter recoil spring. I'm sure Wolff Springs is already on it.

[@weekenddistractions]

@@bwofficial1776 Good thought!

[@bqbhhhh]

Thx for this!

[@markjohnson206]

“Nothing quite like it”. The Ruger Security 380 boasts great sights, good trigger, and excellent reliability straight from the box. I’d love Chris’s opinion on it. It’s a great pick for condition 1 carry too.

[@ryan_neris]

I would be interested in Chris's opinion on the Ruger Security 380 too, although I suspect he would point out its slightly but noticeably larger size (see Handgun Hero overlay comparison). Cheers!

[@Belloc]

Or the Kahr CW380. Doesn't have the capacity (just 6+1), but it's quite a bit smaller, but still super sweet shooting. Similar issues to consider with ammo choice and reliability, like all small calibers. This video laid out the issues perfectly, I think.

[@EC-cm8sf]

I had tons of issues, stovepipes, double feeds etc. I called sig they sent a new recoil spring, never had an issue after.

[@newtestamentchristian6932]

Do you know if Sig lowered the spring weight on the replacement?

[@EC-cm8sf]

@@newtestamentchristian6932 i don’t, it definitely feels lighter but I didn’t measure. The 2 look different as well.

[@w00borg34]

@@EC-cm8sfwow good info thanks for sharing

[@johntipton6825]

What poundage of spring did they send you ?

[@EC-cm8sf]

@@johntipton6825 it didn’t say, I’ll check if it’s marked on the spring somewhere but I can tell you it’s definitely was different then the old one.

[@zaitcev0]

Back in the day, it was quickly found that Glock 42 did not work well with light bullets, but worked great with heavy bullets. At the time it was seen as a problem with Barnes. Note that the higher pressure did not compensate for the lightweight bullet. That is what the video deals with at 06:30.

[@DeanCalaway]

That was some great slow motion to demonstrate limp wristing, perfect for an educational video.

[@KwarterCraft]

I have the P365-380 and for me it runs flawlessly until it starts to get dirty (around 450-500 rounds without cleaning). As long as I clean it regularly it's been running great.

[@mt11235]

My wife and I both have one of those and when testing hollow points hers ate Hornady stuff just fine but mine had issues with it even with a stiff grip. Didn't have any issues with any hardball in either even doing my limp wrist test. after a few hundred rounds it seems to be more forgiving, but I found some other stuff it likes just fine so sticking with that since I trust it. All that to say: 100% agree on test your carry ammo a lot. I always do a limp test with a few mags like you did and if I don't get a perfect score I try different ammo. Not cheap, but need to practice with the firearm anyway so two birds and all that. 3 birds if you also use the failures as an op to practice clearing jams. Also retest as the gun wears. What it likes today my be an issue tomorrow. I have a suspicion that they just went overkill on the recoil spring. Have a number of Sigs and seems to be a not uncommon theme with them. On 320 in particular even with hot 9mm the brass just dripped out. Not sure who makes their springs but they seem to be all over the place.

[@Caligari87]

I know it's not super-relevant, but just adding my voice that heavier rounds tend to help weak ejection in my experience. I built a "clone" of your 9mm backpack gun with the CMMG RDB kit, and through a bit of trial and error, I found that with my stock JP silent captured buffer and hammer drag, it only functions reliably with at least 124gr. Any lighter and I get FTE, FTF, and double-feeds, on occasion even bad lockup leading to bulged cases. With the right weight it runs like a champ and I didn't need to do any other tuning.

[@paneofrealitychannel8204]

You had to love the shout out from Tucker! I was hollerin for ya!!

[@aaronwilcox6417]

Thanks for this information. Ive been seriously looking at this Sig 365 380acp and Ruger Security 380. This gives me some insight of considerations concerning ammo choices even if im biased to fmj in 380acp.

[@joep8787]

I have the p365 in 380. I had problems with one ammo, so I stopped buying that ammo. No problems after that. I like the softer recoil; when I put a red dot on it, my accuracy improved. That, together with the light trigger and short reset makes this an excellent pistol for double taps and accurate, long range shooting. I do have several 9mm and several 45acp pistols.

[@richardefriend]

Xcellent video, but I'd have loved to see some results from Underwood's 90 gr. Xtreme .380 ammo (the Defenders and especially the Penetrators).

[@fuzfire]

Have you ever checked for bullet setback using Underwoods xtreme Defender or penetrator? It's a real thing in some high angle feed ramps. It could be a real problem you haven't noticed before.

[@richardefriend]

Never heard of that, so more comprehensive details or a link to a video or article would be great.@@fuzfire

[@likydsplit8483]

For what it’s worth: I use the P365-380 to train new shooters (men & women) - I have 3 of them, and have not had any issues. All mine have Red Dots on them - I use 90gr Magtech or Sellier & Beloit ammo. I previously used Winchester range ammo in 9mm & .380 - but something changed in their Quality Control about a year ago and I started having various issues. The switch to Magtech has resolved that.

[@superbug1977]

I own and love this pistol. And I must say your video is detailed and fascinating.

[@PJLynch1960]

My Sig P238 running Underwood Xtreme Penetrators is very reliable. Low recoil, no need to worry about hollow point expansion. I run it with the 7+1 magazine. An aluminum frame, hammer fired beauty.

[@colemcd1806]

The Glock 42 also had these exact same issues. I've found Fiochi xtps and federal 99gr to cycle my 42 well, while everything else is super subject to limp wristing.

[@brodyscarlett5527]

I'm not a gunsmith, but it sounds like the ideal case would be a lighter slide on the 380 version to keep the slide velocity up, kinda like an open gun. It would probably reduce recoil also.

[@andrewgee241]

Sig did that. But he added the weight back with the red dot.

[@Gl0ckb1te]

​@@andrewgee241yup, drives me nuts he didnt try it without optics

[@ericbergfield6451]

Oh wow, very interesting results for the .380 platform

[@growell8832]

I just purchased a 365-380 and the first mag of Fiocchi hollow point I believe it was 90g, it failed to feed 2 or 3 times per mag. It could have been the first few rounds and it needed breaking in, the hollow point was fairly aggressive and I attributed the ftf to that because all the other ammo I ran through it ran flawlessly. I really like the way this gun carries and shoots, I'm thinking of trying the P365 XL next as long as the recoil isn't to harsh for my 71 year old hands it should work and the price difference in ammo between the 380 and 9mm is significant along with availability.

[@antonioadinolfi4052]

Great video and very good impartial info. My take on this is that if I were in the market for a compact .380 I'd better go for a Cheetah and spare myself all the hassle to find a working cartridge, the cost and the time.

[@sevse23]

Wow, thanks for the meticulous test, very interesting!

[@elonquemattheson6151]

8:00 If you look at momentum (m*v) rather than energy (.5*m*v*v) it'll translate more directly to the slide's recoil velocity (m_bullet*v_bullet/m_system).

[@ryanranard5187]

Correct

[@richardefriend]

Excellent point. In fact, that's how I rate all my pistol ammo. Did you find that a correlative factor here for FTE?

[@LuckyGunner]

Yes, momentum would probably be a better predictor of slide velocity. However, an observation that was inadvertently cut from the video is that while low slide velocity leads to ejection failures, the inverse is not always true. Some loads with high slide velocity also had poor ejection. So while it might be useful to be able to predict slide velocity, there is still no guarantee that a momentum calculation would automatically lead us to the most reliable loads

[@elonquemattheson6151]

@@LuckyGunner That's really interesting, and could explain why I've been getting so many failures in my P32 using Norma and S&B ammo, especially when using extended mags (which reduce limpwristing).

[@falconcowboy9995]

Great video........there are things I don't like about my 365 380.......also G42 G43 LCP MAX etc... I'll keep my Sig for now

[@GruntBurger]

I like your disclaimer "It's not empirical, but we all know it's good enough."

[@The5nowman]

I’ve not had an ejection issues but mine has started to have ALOT of failure to fires…. Sometimes it strikes the primer and not others. The gun has probably 600-700 rounds through it with s few different types of ammo. I’ve stripped it, cleaned it and oiled it.

[@1911meShoot]

Wow!! Given that no one cares about my expertise, I can only say: Thank-you! and what an excellent video. Again, Wow! My respect for your presentation, facts, doubts, wondering?, all give me great confidence in what you have to say. Thank-you!!

[@Inflorescensse]

Excellent I’ve been wanting to get the 380. I find the 9 mm in the smallest size too snappy.

[@solomongrundy9735]

Oof, that experimental bad grip looked very uncomfortable, especially shooting the 9mm.

[@LuckyGunner]

It wasn't that uncomfortable, just awkward. The 80X Cheetah was uncomfortable because of the aggressive texture on the aftermarket grip panels I have on it.

[@0dayExploit]

@@LuckyGunnerwhat panels are you using? The side panels are a bit slick imo. The front and back checkering is great

[@LuckyGunner]

Lok Grips Veloce Wraparound. Pricey, but fills my hand much better and makes the gun far easier to draw and maintain an optimal grip. They also have just side panel grips if you prefer the factory backstrap contour.

[@rg8521]

this is some really awesome testing and information to have! thanks for this!

[@johnjanoscrat8000]

Great detective work, Chris. Waiting for Sig to offer you a job. All the best! "The JJ" SW Penna.

[@aubreysimpson4147]

We have a p365 380 , stovepipe and double feeds . Going back to sig the second time. Not happy.

[@ThePNWRiderWA]

I use the HST 380. It’s the one that works all the time no matter how I hold it and it’s easy to find that the gold dits that work as well.

[@andrewgee241]

Very detailed but you didn't test for the most obvious issue. Why didn't you remove the red dot? These 380 versions of 9mm pistols remove weight from the slide to compensate for the reduced energy so adding weight to the slide might be causing some of the ejection issues.

[@chuckr5929]

Mine started out with being ammo sensitive, and over 2k rounds through it eats about anything. I did notice when racking the slide brand new it felt like there was some sort of hangup catching and slowing the slide. I chalked it up to just needing broken in. I am running a Cyelee Cat and AmmoInc through it.

[@qqsrx]

Dose it mean that the spring sig put in the 380 is too strong?

[@jeffchai6561]

Would lighter recoil springs remediate the anemic cycle issues?

[@Rollermanfromspace]

You should do a review of the Ruger security 380! It’s like a combo of this gun and the shield EZ 380s

[@johndeere1951a]

Your general conclusion of heavier 90g plus, and higher velocity, say 925 fps plus generally performed best. No stove pipes, faulure to eject, use brass case , no steel case, no aluminum case - for best reliably. Great. You agree with Walther's Owner's manual page 19 on ammo warnings for best reliability (.22 wmr) Always refer to the gun manufacturer's Owner's Manual first. They perform extensive testing in developing their pistols. They know. You may have just wasted a lot of time and ammo covering ground already available in the OWNER'S MANUAL. I do enjoy your channel 👍👍

[@Aaron-ro4kv]

My p365-380 is my only sig that HASN'T had reliability issues. All of my p365 9mm's have had ftlb, ftf, and parts falling out and flying off while firing. I'm not buying anymore sigs. Learned my lesson finally. Time to see what Glock can do for me.

[@talega1]

their fat 380 isn't good

[@Aaron-ro4kv]

Never mind. This one f***Ed up too. Rsa now overlaps oddly at the bottom contacted sig. 4th shipping label. 4th trip to FedEx.

[@MrTom1701]

Mine didn’t work reliably with any ammo out of the box. I sent it back to Sig. They fixed it up and now it runs great.

[@OceanKing6725]

Sounds like SIG screwed up with recoil spring weight and it's oversprung from the factory.

[@domenik8339]

Typical sig. Release a gun and do the reliability testing for it later.

[@OceanKing6725]

@@domenik8339 Yup, SIG using customers as part or their product testing. Never buy a new product from SIG, always wait for 2nd/3rd gen iterations.

[@MrTraewilliams]

i had a smith wesson sigma 380 years ago and the only ammo i could get to work all of the time was a 102gr Remington. that was the first gun I ever had that was ammo sensitive.

[@dylano7242]

I fixed all my p365 platform problems by dumping it and getting a cz p07 and iwi masada slim, which share mags between them.

[@johndomutz1052]

I've recently purchased SIG 100 grain .380 and that cleared up my problem here.

[@ricvanech495]

Ok question. My sig starts jamming after 50 or 60 rounds?! Could the be I need a higher round?

[@ricvanech495]

Caliber like you said

[@frankthompson9119]

I was leaning toward buying the P365 .380 since the Beretta 80X has not moved from $750. Maybe not so much now.

[@antpassalacqua]

timely, picked one up recently

[@Thee_Sinner]

To test which loads will have the most trouble with loose grips, you could build a rail system that has a break-away stop that only hold as strong as the trigger pull is. Once the trigger is pulled, the recoil force should overcome the strength of the switch and let the gun slide free on the rail. This would simulate the most extreme of limp-wrist scenarios.

[@DWalter.27]

No, the gun needs gripped at the correct-ish spot. Not letting it rotate up like it does would change the dynamic

[@wyattblessing7078]

Cool. Ammo even on the 9mm can have an effect. I have seen many guns that favor certain ammo, so the Sig 380 is not unique in that aspect. I'd love to see Underwood 380 +p load tested and how it does in the Sig.

[@joep8787]

My 365 380 hasn't had ejection issues, but it has had failures to fire with one particular ammo brand, Freedom Munitions. I think the primers were bad, because I didn't have the same issues with Sig or Winchester ammo. I had the same FTFs with my Ruger LCP 2 but only with Freedom Munitions. I've solved the issue by simply not buying any more Freedom Munitions in 380. I haven't had FTFs with Freedom Munitions in 45acp.

[@txlongarm]

Great info, as usual. Thanks.

[@joeflowers5803]

Wouldn’t it help to drop the recoil spring by 1-2 pounds? Seems like that would speed the slide up (as long as it wasn’t too light and beating the gun). Seems to me like many pistols are oversprung these days.

[@bluepunk182]

Not sure why Sig has so many issues with gun reliability....What happened to this once legendary company?

[@Katana_Gryphon]

Depends on who you ask. Some say it happened when they stopped making them in Germany, others say it was when the Kimber CEO took over...

[@mistercindy9601]

Superb video. Thank you.

[@rolandscherer1574]

There is a difference between energy and impulse. The impulse determines the recoil and thus also the speed with which the slide is opened and the cartridge case is ejected. Energy = mass * velocity squared / 2 Impulse = mass * velocity (or is it called momentum in english?) You can see for impulse the mass has a greater influence. (I'm German, I don't know if I've used the right expressions - sorry!) (Sorry, I just saw buzz6925 wrote the same)

[@gregbarrick5503]

I don't know if sig offers it, but perhaps a lighter recoil spring would help mitigate the failures in the light for caliber selection of bullets.

[@themechanic6117]

My 80x cheetah has problems with failing to feed quite often . Most times if I bump the rear of the slide it'll force the FMJ to go in. Using Fiocchi 95 grain

[@LuckyGunner]

That is not normal. I would contact Beretta

[@ToastbackWhale]

The heavy-for-caliber train of thought makes me think that slide velocity is a function of momentum, not energy, of the projectile. Kinetic energy depends on the square of the velocity - momentum is purely a function of mass and the velocity. More momentum in the bullet = higher slide velocity, maybe?

[@LuckyGunner]

That sounds plausible

[@ValiantSlothman]

Not sure if this was mentioned, but would it help the cycling without the red dot? Not a great solution of so but i remember seeing the walther 22magnum have issues with the red dot on the gun.

[@LuckyGunner]

It's possible. The optic weighs less than an ounce, so it doesn't seem likely. Since it shipped from the factory with that optic installed, the recoil spring really should be calibrated to function with it

[@PickledShark]

@@LuckyGunner Still, would be great to test that.

[@chestersnapdragonmcphistic579]

Slide velocity might be more related to bullet momentum rather than energy. You might think of a gunshot as a reverse collision. Momentum is conserved in collisions, but kinetic energy isn't (in real-world scenarios). Mass is "worth" the same as velocity to momentum, as opposed to kinetic energy where velocity is "worth" more, which explains why the heavy bullets gave higher slide velocity.

[@keithgraham9547]

With the Glock 42, same problem snd it eas all blamed on "limp wristing,' which actually is not a real thing. If your grip was a half-inch low on yhe beaver tail, I got FTE. Ove the grip up and it ran perfectly. These are really design flaws. Just too much slide snd spring for a light cartridge. Which shows the difficulty in producing a usuable autoloader with very light recoil. Got to be some energy somewhere. Either you have some recoil, or the design gets compromised.

[@LuckyGunner]

I have heard that Glock alleviated that with some tweaks to the design and that later samples run much better. Haven't been able to confirm it, though. The one we have is from the very first production run and it does have issues if you don't use a sufficiently firm grip.

[@keithgraham9547]

@@LuckyGunner I used to be comfortable carrying a 380 or even Jimenez Arms six-shot 22LR. I disposed of them, and usually carry 45acp and 357 SIG because my concern has gone from muggers, to perps at longer ranges in riots or crazies with rifles and armor. Here's something I'd like to see you text. I don't trust 9mm, I think it is way underperforming unless you buy expensive "hyperammo," which just negated all the supposed advantages. In my own tests, short -barrel carry pistols, using three brands/loads of 115 grain or ordinary ammo, I started getting lots of fliers that are definitely NOT me from 18 yards or more. From rest, at 33 yards, I shot 24-round "groups" that were low and left by: 8" 11" 12". The 8" group had the most variance, some dropped 24". I did NOT get this with 357 Magnum, 40 S&W, 357 SIG, or 45 ACP. I postulate a lot of regular 9mm has huge QC variances, and light powder loads. Under ten yards, we blame ourselves for poor groups. At longer ranges, the variance and light loads show up. Could you recreate the test?

[@notsoserious0944]

Nice work...maybe try the Walther .380. It used the browning system.

[@baxrok2.]

The Wilson grip module will solve a lot of problems even for those with weak grip strength.

[@felixd7818]

You convinced me. I’m keeping my Glock 42. 2K of very mixed 380 shot in a dirty gun and it still worked. No drama.

[@DrDemoman74]

I think its because thr glock 42 was made for .380, while the .380 SIG is almost the exact same weight and exact same dimensions.

[@roykiefer7713]

Good analysis.

[@lain6889]

Maybe a slightly lighter spring, just not so light it doesn't retract back fast enough for the next trigger pull. Look up DPM spring rod kit - soft version, should fix the issue. Uses a lighter spring while still stopping the slide from slamming back too hard. Slide would go back faster, ejecting more reliable, and the recoil will reduce too.

[@cristianfamigliuolo]

A question? It can improve the expulsion.. lighten the reciprocating mass with superior millings

[@larrya2995]

Since we are not dealing with a lot of power here to overcome extra forces, I am just wondering if the addition of the optics changed the weight or center mass of the slide enough to slow it down? Perhaps the recoil spring is a tad heavy, check the weight of pull to rack the slide. Maybe even trim one coil from the spring.

[@gsitzkowitz]

🤔 hmm? I’ve had one of these guns for a while now. Over a thousand rounds + with absolutely no malfunction. I’ve used every kind of bullet weight and every off the wall manufacturer, reman, new, range ammo, some self defense loads. Not a problem yet. I clean it about every 200-300 rounds. For self defense I use Underwood 68 grain extreme defender, flawless.

[@b-rye5094]

I want a .32acp 15rnd P365

[@JohnTBlock]

It seems most .380 loads are MADE for blow-back actions. A lighter recoil spring in a Locked breech gun would be indicated, wouldn't you think, Chris? That, or build a blow-back version....not sure how you deal with weak handed operation, otherwise...

[@HibsLX]

Great testing!!

[@CarsonHassler]

Dying the beard huh... 🤣🤣🤣

[@sgtjoefriday2638]

I've had minimal ejections for a few years now, but figure it's just due to age.

[@noplix7675]

Momentum is probably a lot better to use to predict slide velocity.

[@MGMan37]

I am curious, is the ejector in the same position as the 9mm P365? It seems to me that since a 380 case is shorter, the ejector could be further forward by that difference of length, giving 380 cases a better chance of hitting it.

[@user1acount]

Maybe it wasn't the hollpoints' bullet shape aiding ejection, but the common practice of that "duty" ammo having slicker cases and cleaner-burning powder?