The Glock 20 and History of the 10mm Cartridge

[@theodoreheintz7891]

My mom gave me a Glock model 20 for high School graduation. I open carried because concealed-carry wasn't legal then. I literally had a "note from my mommy" saying it was okay for me to have the pistol. Once my mom and I were planning to meet up at a gun shop and my car had a tire blow out. This was in the days before cell phones were cheap and common. I flagged down a passing cop. He gave me a ride to the gun store so I could meet up with my mom and get some help from her and we talked guns the whole way. He was carrying a model 21. He asked me why 10mm and I said moose bears and 2 more rounds. He was like yeah totally makes sense!

[@worddunlap]

My friends are 40 cal haters. I bought one decades ago, stainless as a gun for the bathroom. There were not that many good 9mm loadings back then and I didn't want to take chances in an Alfred Hitchcock moment. The stainless is self explanatory. It has been the perfect bathroom accessory and although it may seem peculiar to some, not once have I been brutally murdered in the shower. I've not so much as had a knock on the door...

[@johnquintana5837]

Tf are you paranoid much? What you smoking pal

[@antouab221]

When it comes to 10mm I'm all ears lol, love this mythical caliber and amazing goods it can do at very long distances. Got both, the 20 gen4 and 40 gen4, prefer the 40 due to its longer slide and more accurate 50y shots. Great video, thx.

[@isaacarnold4635]

Don Johnson's Bren Ten from Miami Vice was on display in the Planet Hollywood restaurant in Aspen, Colorado. I saw it. Dornaus & Dixon went under. The Planet Hollywood restaurant in Aspen went under. And Don Johnson went bankrupt. Maybe the pistol was cursed.

[@ohredhk]

Or may the Bren Ten, Planet Hollywood and Don John were just not very good.

[@anthonygerber8261]

Just hearing the report of that 10 mm, ya could tell it's a beast! Damn!

[@jameshammond2079]

I use the underwood 140 extreme penetrators 10mm out of my 40 Glock and I’m hitting 1615 1624 fps….over 800 ft pounds of muzzle energy…..it’s amazing

[@edwinrivera4869]

That is amazing! Are you using the original polygonal barrel?

[@jameshammond2079]

@@edwinrivera4869 yes I am The factory polygonal barrel

[@jumpykilllerqx6029]

Iam simple man, I see 10mm I click.

[@NateTheBrewer]

Love my g40 in 1 centimeter. 10mm range ammo has gone down in cost and since it’s the only gun I have with a red dot I find myself practicing with it more and more. The red dot tells me when I’m shooting poorly, and I like that when I go back to my 9mm carry guns I shoot them better. Still carry the g40 in the woods when hunting.

[@763charlie5]

G20 Gen 4, my EDC. Thank you, Sir.

[@RexApplegate]

I have a gen 2.5 20c. My carry gun of the past 7 years. I would also add to its detriments that firing from retention without ear protection would likely be a one and done tinitus situation.

[@xaviersmith2926]

It's about time! I never thought I'd see the day you post a review on the 10mm Glock.

[@G19Jeeper]

I had a box of that Winchester subsonic stuff. Never shot it as I hadn’t really had much of interest in 10mm until I started looking at CZ 75 clones recently.

[@trumpie5399]

Crockett didn’t have blanks for the 10mm so that is why used the same pistol in 45 with blanks but portrayed a 10mm on set.

[@zrx4me1]

I love my G20,but even more fun is my Sig Tacops 1911 in 10mm.Im a BIG 10mm fan.

[@rickoshea4546]

It was the FBI's Smith and Wessons that were cracking (not counting the Deltas) not the Brens from Dornhaus and Dixon; which was a CZ based design with just a touch of Hi-power thrown in.

[@texasbeast239]

The Bren Tens had a reported problem of porous casting of the slides, which lead to some of those slides cracking.

[@kevinjohnson1139]

5:05: _”Now the model 20 was developed as a 10mm pistol and was later converted to a 45 Auto.”_ That certainly gives me confidence that the G21 is a very durable pistol. [And I need to buy one] 10:29 _”The G20 in my opinion to right now, to this date is the most durable and reliable of all the 10mm pistols we have out there at the moment…”_ My G20 is more durable than the myriad of 10mm pistols in the 1911 platform, despite being much cheaper, lighter and having twice the capacity? Ok, I’ll accept that.

[@rickoshea4546]

20 precedes 21

[@Dr_K545]

Good stuff. Love the history part. Always learning something from you, my friend.

[@grassyknollblues]

My edc with buffalo bore

[@6nosis]

I replaced both my 20 & 21 guide rods with extra heavy tungsten guide rods from the Glock store and mmmmhmmmm those are 2 gorgeous shooters.. that’s the only thing I’d change out FYI ..

[@michaelhodges8312]

Waste of money changing the guide rod is what I’ve heard from good sources. Only things changing out are the McNally trigger, Alpha Wolf barrel, and decent sights like Ameriglo.

[@AlexSadof]

Great vid. I have the 20 and 29 Gen 4 w/ 21 and 30 full Glock slides to convert to .45 Auto. I gotta say, they're big pistols, and if you're adding the large backstrap to that G20, sir you have some BIG hands brotha. 21 is my bedside, 30 is my carry, and 20/29 are either chest or concealed when in the backcountry w Underwood 140gr extreme penetrators.

[@fatjeezussouthtexasoutdoor5244]

Just got a Hi Point JXP 10mm for less than $200.....we got a bad feral hog problem on our property so needed a POWERFUL pistol that was cheap as its going under the seat of the tractor......cant go wrong with a Hi Point.

[@larrymarshall6710]

Always enjoy your videos. Thanks for putting in the time and effort in making some of the best firearm videos on You Tube.

[@donsapunk]

I just took an advanced pistol course with me Glock 20 it will work as hard as you do.

[@hillbilly224]

love my Gen4 20 1000 rnds not 1 problem

[@petesheppard1709]

Thanks for an informative video; Glocks certainly seem to be more adaptable to larger cartridges than other designs--10mm is a LONG way from 9mm! A bit of background: In the mid-'80s, the FBI adopted the Winchester SilverTip 9mm 115gr cartridge on the basis of findings by the National Institutes of Justice that determined that velocity and 'hydrostatic shock' were the fundamentals of stopping power. After the Miami Shootout, where one 9mm was found to have gone through an attacker's right arm and chest, but stopped just short of the heart (this shot would have eventually been fatal by itself, but didn't stop the assailant immediately), penetration became the name of the game, hence the attention given to the 10mm and eventually the 147gr 9mm.

[@JoeyP322]

Extar makes a 10mm carbine that accepts Glock magazines. Costs around $420, really good reviews.... another Excellent video... I bought my G20 a few years back, and immediately bought a few boxes of buffalo bore ammunition just in case...

[@curlybill3966]

The new XD is looking good.

[@xfliegerkorps8676]

Excellent, detailed description and summary. Thanks much for this.

[@bravo0105]

Isn’t the Bren Ten a CZ-75 clone rather than a clone of the Browning Hi-Power? It’s DA/SA.

[@stalkinghorse883]

Yes it is. So is the EAA witness in 10mm.

[@jeremylemons9813]

I know this has nothing to do with 10mm. Any chance of you reviewing G43X & G48? I respect your opinions highly

[@Rancher1911]

On the ranch we use only 10mm. I use the Ruger 1911, Glock 29, Glock 20, and S&W 1006. The 10mm is nice just incase we unfortunately have to put down a large animal.

[@jasonschmidt9569]

Rancher1911 We do the same in the city except for large 2 legged dangerous animals

[@Tadicuslegion78]

Then Glock a couple years ago realeased the Glock 40 which is their long slide version with a 6 inch barrel and an MOS cut out which is Glock's biggest pistol. like a literal hand-cannon. Now something else about 10mm vs 40 S&W, is the one clear advantage 40 still has is price and availability, because for those of us who do not reload nor like buying ammo online, it's a real crap shoot on 10mm because sometimes you'll walk in and there'll be plenty of boxes like Sig Elite but other times nothing except like 3 boxes full nuclear Buffalo Bore Hard Cast

[@rickoshea4546]

buffalo bore is not nuclear, it's moderate.

[@Laotzu.Goldbug]

I'm curious to see your impression of the EAA Witness (CZ 75 clone) in 10 mm. I've always heard good things about them.

[@errcdes]

An excellent firearm!

[@benavrahamyitzchak8433]

I'm going to buy 10 mm in couple weeks. In Glock 20. Debating on the 10 C. The nature of the beast is to learn to manage the recoil. It's a great round. Col Cooper had some great visions

[@phishno2767]

The recoil is not brutal like some of the Magnum revolvers can be. And I'm going to have to disagree with what Chris said in the video: The top-end 10mm loads may approach some of the milder .41 Magnum loads but they are not even close to the full-power .41 Magnum loads.

[@walcrow7319]

Great info, Chris. Thank you.

[@mikefay9131]

Chris, merry Christmas and happy new year. My best friend is a great gunsmith, and I had my G29 done up nice. Ceracoated distressed gray/green. Replacement barrel. Then barrel and slide ported. Yahoo. It's a keeper. Thanks for the great video.

[@J1Z06]

I bought a Gen 4 Glock 20. I can't wait to try it out! How does it compare to .357 Sig?

[@DEATH_TO_TYRANTS]

Happy holidays Mr and Mrs Bartocci. I hope the new year brings yall much happiness and prosperity :)

[@Mbartel500]

The ten is in the .357 magnum range of power, but nowhere even close to the .41 magnum.

[@skepticalbadger]

Gen3 Glocks do not have removable backstraps.

[@rickoshea4546]

but are more durable

[@Elvis68spec]

Excellent Video! I went with the Sig Sauer P220-10 rather than the Glock. I'm a 10mm Fan!

[@1metalg0d]

Just wondering why no mention of glickzilla g40

[@otisnelson3860]

think you could do a video on the 460 rowland???😃

[@HK_roller_delayed]

.460 rowland is life. I'd like to convert a USP45.

[@45eno]

I own the G20 Gen3 10mm. I bought a LoneWolf 6" barrel for it and both 20lb and 22lb recoil springs. Shooting the 200,220 and 230gr loads have been nothing but unreliable for me. The DT 230gr wouldn't even drop all the way into the LW 6" barrel. I'm sure there is a way to make it run better but it has been a very expensive gun for me. Shooting 180gr FMJ from Underwood have worked fine. I can't trust this gun. I bet it will shoot standard loads with stock spring no problem. Just not the hot stuff. I bought it for backpacking and wanted to carry heavy loads only. Looks like FMJ 180/200 is the only reliable option with the parts I have for it. I haven't bothered with it for years now.

[@globalistwench]

Put the original barrel and spring back in it.

[@richarddavis9895]

Glocks are good guns, regardless of caliber.

[@nickma71]

A Full30 member says the 20 was a converted .45 auto. I can't seem to find any internet articles supporting that claim.

[@Jet2416-Reloading]

Not to say all issues of breakages and/or failures with 10mm Delta Elites was overstated or false, but I will say there was at least one exception. In 1992 I bought a Colt Delta Elite with a match barrel (extra). I fired every kind of ammo available at that time from the worst, dirtiest, slowest range ammo to the very hottest self defense rounds. Over-all I must have fired the pistol at least 15,000 rounds without ever experiencing any breakage and only 1 in possibly 1500 fail to eject, and the only failures happened when firing aluminum cased ammunition. Otherwise, absolutely Zero (0) failures. Perhaps I got lucky and got one of the few without issues but I'd say more likely a greater number of the many "issues" recorded with the Delta Elites was caused by the shooters' lack of maintenance or limp wrist shooting.

[@errcdes]

I haven’t had any issues with my Colt Delta. A class firearm.

[@onkelmicke9670]

yup

[@texasbeast239]

The Delta had actual cracked frames. That wasn't from poor maintenance or limp-wristing. At some point, Colt cut a relief void space out of the sides of the frame where the frame binding was greatest, and this prevented the cracks. And apparently when they re-released the gun years later, they had redesigned the frame so the relief cut was no longer necessary. But it still only has half the capacity of more modern designs.

[@motohead077]

Can you discuss the issue(s) of the Glock when shooting full power norma 10mm ammo & not having a fully supported chamber, etc. Glock & most (if not all) 10mm semi auto pistol manufactures do not recommend shooting full power ammo.

[@chromosomehoarder6927]

That was my concern so I changed the barrel to a threaded lone wolf barrel in the Glock 20. I’ve left the g29 on the stock barrel do to the fact that typically I carry fedral hsts if I’m going into town Buffalo bore might be a bit over kill for such a task

[@johnnyhalf6558]

Thanks for the heads up !

[@matthewwolff3729]

Great video, hope for more 10mm videos.

[@Jimbobhill2039]

I just picked up a Glock 20 with a gen2 would that make it a pre band ?

[@coyotebrown2294]

I've heard two stories on the recoil being bad for FBI agents qualification. One person on forum who claimed to be retired FBI (yeah I know...) claimed that the load was actually cut down to 40 S/W levels on the recommendation of trainers PRIOR to any regular FBI agents qualifying with it. Have you heard anything on that?

[@45eno]

I'm no expert on these matters but from my reading years ago is that yes the FBI had issues with all their agents being able to handle the recoil of the round and found that loading it to a lighter standard provided adequate performance and was easier to shoot. I read it was called 10mm lite or 10mm FBI loading. Then somewhere down the line someone was able to cut down the casing and create the same ballistics of the 10mm lite but in a shorter cartridge that could fit the frame of a 9mm. This is what spawned the 40SW. There is tons of write ups and videos out there on the history of the 10mm.

[@texasbeast239]

I have read up on the controversy as well. Bren Ten went bankrupt in 1986. Part of the Bren Ten's notoriety was a rash of cracked slides that couldn't handle hot ammo. The FBI began extensive scientific analysis and then testing of handgun ammo as a result of the Miami shootout that year. In 1987, Colt released the Delta Elite, but by early 1988 the Delta had already earned a reputation for cracked frames from hot loads. This hung an albatross around the neck of both the gun, and the ammo. Would there EVER be a gun that could truly handle 10mm without reservation? In the summer of 1988, the FBI decided to pit 9mm and .45ACP directly against each other to determine the agency's ammo of the future. Then the FBI Firearms Training Unit (FTU) director, Supervisory Special Agent John C. Hall, thought that 10mm should be able to compete as well, as he owned a Delta and was fond of the cartridge. He got the necessary authorization. (But he wasn't about to go running hot, risky 10mm through his precious, personal gun!) In the name of science, the FTU decided they would need an experimental control. What they decided on was a muzzle velocity of 950fps, to ensure that all calibers could compete. Officially, the FTU determined that hot 10mm would be too powerful for standard issue, with the thought of female and smallframed male personnel in mind. (And safeguarding that sweet Delta almost certainly factored into the decision, as well!) So the FBI's decision to neuter 10mm appears to have been made before the agency ever even tested the caliber, and before it ever issued any gun chambered in it or any cartridges. It was a case of bureaucratic PE: premature emasculation. There were no commercial 10mm loads available in 1988 that went that slow. So initially, the FBI had to buy ammo off the shelf, pull the bullets, and reload to their desired spec. Later, Federal won the contract. The 10mm cartridge beat the others, and in 1989 JAN, the FBI announced that it had selected the caliber for their future issued sidearms. But there were no confidence-inspiring 10mm guns on the market at that time. So the FBI sent out a request for proposals, calling for an external safety, decocker, and some sort of device for pretravel takeup, in an all-steel package. Glock protested, insisting the specs were unnecessarily restrictive so as to keep them out of the running, and predicting that the FBI's design parameters would cram too much into the gun and lead to jams. In 1990, the FBI decided upon the S&W 1006, a beefy all-steel unit based upon the 4506 which was built from the ground up for heavy duty ammo. The FBI didnt want the specter of any more cracked slides or frames hanging over its head. The issued FBI ammo received a small bump up in performance. Reports vary between 975 and 985fps. So here was the situation: the FBI had contracted for a heavy duty 10mm gun to be made for its agents, and then it turned around and ran practically the weakest 10mm ammo known to mankind through it. The guns were not amused. And I remain convinced that this mismatch of strong gun/wealth ammo doomed the project from the get-go. Some female cadets and agents complained that the Smith gun was too big for their hands. Hall supposedly lent them his narrower Delta in order to qualify at Quantico. There was also the not-so-little problem of jams. Remember Glock's prediction? Yeah, THAT. Pistols began to be recalled back to Quantico for tweaks, but jams persisted, and in 1991 the 1006 was recalled back to S&W for a real fix. By the time S&W submitted its analysis and a list of recommendations, the FBI washed its hands of both the gun and the caliber. Over the next few years, the FBI issued several different models of guns, both in 9mm and .45ACP. Meanwhile, in 1990, S&W announced they had developed a shorter version of the 10mm cartridge, called the .40S&W. This would allow the use of smaller magazines and smaller gun frames than the 10mm. And this proved very attractive to the FBI. In 1997, the FBI began issuing the Glock 22 in .40. And its .40 load had the same performance specs as the 10mm load it had issued 7 years before. This remained the agency's issued sidearm and load until the return to 9mm in 2015. Now, the fact that the FBI chose the same performance specs for its .40S&W load as it had for its prior 10mm Auto load shows quite definitively that the FBI did NOT reject 10mm because the agency thought it was too powerful. It liked the power output quite nicely. The FBI rejected 10mm because the agency had chosen a dud gun for the caliber, and also because in double-stack form, the ammo required a gun that was too large for a considerable number of agents.

[@robertpatter5509]

It's just FBI agents being effeminate. That's all. If they ate bacon, eggs and steak over estrogen they could handle Underwood XTP 155gr loads no problem

[@downeastoutdoors8713]

Thanks for the video sir, id like to give u and idea on a future video, say if all u did for work was working on glocks what tools do u need to have? And what tools are handy but not nessecary? New to glock pistols and u seem to have and insane amount of knowledge on them. Love your videos as always. Thank you smallarmsolutions

[@rickyjohnson9594]

10 mm a beast terminator round will go Thur level 3 body armor with Ventura extreme defense ammco. And three slabs of jell 220 gr and out that's over 4 foot plus with a certain type loads

[@FreedomsLife1776]

I’ve been really curious as to why this pistol was never adopted by the military for any role. As a PDW it is really hard to get better than one of these. I can hit a person 10/10 times at 100 yards with a 9mm so I’m sure you could do the same with this out to 175 at least. Also; 15+1 of some serious 10mm and as compact as it is that’s exactly what people want in a PDW. Or am I missing something??

[@caseymings134]

Because 10mm isn't NATO standard.

[@SUBARCTICPSYCHO]

Because women and effeminate males will cry about the recoil and bulk.

[@bktraveling3204]

Great video brother. Yes I’m 4 years late but I click on all 10mm videos haha.

[@alanpruett2217]

Question on barrel options. Can a G20 fire either 40 S&W & 357 Sig, with just a barrel swap, without doing damage to the pistol? I have had the G20 for decades, and wonder about it’s versatility, since the diameters are the same on all these cartridges.

[@SmallArmsSolutions]

No, just the 40. In my opinion the slide is way to heavy as well as the recoil spring. Mag would not work right either.

[@waynelabeaud7945]

GREAT VID BRO as ALWAYS...tou speak with authority and knowledge and it is greatly appreciated. Thanks. BTW, I have a gen2 G20...usually use Federal 180gr Hydra-Shok...what load would you recommend

[@SmallArmsSolutions]

Wayne LaBeaud you use already what I would recommend

[@hardcasthale4904]

The sig 180gr vcrown has been doing well in all the gel test videos It has been shooting great in my g20 Plus I can get it off the shelf at cabelas on my way to work, it’s available every time I’ve checked in the past year.

[@waynesworld9753]

Do you keep yours stock for hotter loads

[@Sagittariustoo]

I have a G20 and G40. For my purpose, I like the G40 much better. Wish I knew someone who wanted to trade their G21 for my G20 !

[@helifanodobezanozi7689]

You can always buy a G21, G41 or G41MOS upper and 45acp magazines and you're in business. They use the same frame. :)

[@Sagittariustoo]

@@helifanodobezanozi7689 Who sells just the G21 Upper ?

[@hardcasthale4904]

Sagittariustoo Lone wolf does

[@s7lresearchdr.311]

Awesome video, Thanks for the information!!!

[@MrCreepers21]

Thank you for the video

[@robertpatter5509]

I wonder who will come out with a 4" Slimline 10mm single stack that's not a 1911? Glock or S&W? I asked Glock and they sent me that boring corporate letter. No response from S&W. I do enjoy all the Glock 10mm models. I own them all. If you want a smoking load try the 155gr XTP from Underwood. That's the best load to date. Even better than Buffalo Bore. 775 ft lbs. That's a potent round. I think some models can have caliber conversions. Such as a .357 Sig in a G29? Maybe. Saw some guy online had so many calibers for one frame. Think it was a G29 or G30SF. I think the 30SF fits on the G29SF frame. So I heard. Maybe Glock should borrow from Sig. Interchangable frames, slides and barrels as a kit. Like a G29SF frame lower with a 29/20/40(10mm) upper all in one frame.

[@caseyosborn875]

Afternoon

[@alcodie1558]

So the Glock 20 is more durable then the Bren Ten and the Colt Delta Elite ! I wounder what the life expectancy is ? What would last longer a G20 or a G22 . Because I've always heard about how the 40cal pistols wear out faster then anything else . So would a G20 wear out faster then a G22 ? Or is the G20 just built that much tougher then a G22 and would last just as long or longer even ? I've wanted one for sometime now but never did for fear of it breaking on me . But at least now I know which one to get if I do , Glock20 : )

[@rickoshea4546]

the g20 was developed as a 10mm, the g22 was the g17 adapted to 10mm kurtz(40s&w).

[@phishno2767]

@Al Codie To put this in perspective, 10mm factory ammo generally runs $0.50US and up per round. A Glock 20 sells for about $550 currently. If it lasted only 10,000 rounds, you'd have spent at a bare minimum $5000 on ammunition costs alone wearing it out. If you can afford to do that, you probably can afford to buy a replacement as soon as you need it.

[@MrExplorer1965]

Personally I don't think that 10 mm is any worse than a 45 ACP with a 230 grain round. I had the Glock 20, the Glock 29, and a Rock Island Armory 1911 all in 10 m m. Easy peasy. It's a good cartridge, they're good guns, but I don't think they are as hard or bad to shoot as their reputation

[@rickyjohnson9594]

Gen 3 glocks a gold standard model

[@jimmymsmizo5741]

Nice review video Sir ❤. Happy New Year 👏. May The Almighty God bless and protects you all 🙏🙏...

[@JustDefense]

Thx

[@nickma71]

Do you have an opinion on the SA 10mm? I ask because my Mil Spec was much stronger than the SR1911 I have now. The Ruger has less than half the rounds through it, and rattles like all the videos I see on youtube. I'm not getting it either way, just wondering.

[@2010GT500]

The 10mm seems to be much more comparable to 357 mag rather than 44 magnum

[@SmallArmsSolutions]

2010GT500 comparable to the 41 Magnum

[@rickoshea4546]

easily out does 357

[@phishno2767]

From the Man himself, i.e. Chairman Jeff: ""We recently had occasion to discuss the history of the Bren Ten with a correspondent who was obviously more of a collector than a shooter. The Bren Ten was a concept of mine, and while I am not ashamed of it, I admit that this concept was not entirely sound. What the Bren Ten pistol achieved over, for example, the 1911, was range. The full-house, 10mm cartridge - definitely not the attenuated 10s which are popular now - pushed the effective range of the combat sidearm out beyond that which is usually expected. But extending the manageable range of a combat pistol out beyond the ability of the shooter to utilize it does not accomplish much. The full-house Bren Ten should be able to achieve reliable one-shot stops out to at least 50 meters, but pistol actions do not take place at 50 meters. The combat pistol is best employed at distances hardly more than across the room, and the Bren Ten will not do this any better than the venerable 45 ACP, or so it would seem." I finally got on the 10mm wagon late last year after Springfield released the XDm-10 (so far, I am impressed). IMO what the 10mm brings to the table now is versatility due to wide range of power of loadings. It is the choice of having one handgun that can be employed to do many things reasonably well if not optimally or having multiple handguns better suited for specific roles and having to learn each one and its quirks and trying to keep them available as needed.

[@texasbeast239]

I have to disagree with COL Cooper that 10mm cannot perform any better than a .45. The FBI showed differently, Marshall & Sanow showed differently with 10mm's performance twin (96% for .357 Mag vs. 94% for .45 ACP), and Ellifritz also showed differently (61% one shot stops and 9% failure for .357 Mag vs. 51% OSS and 14% failure for .45 ACP).

[@shiftd_1114]

Kind of shocked Chris compared the 10mm to a 41 mag (bs lore), they are not even close in terms of ballistics /power , the 10mm is about equal with a 357 mag ...

[@cephasmartin8593]

I've always said, the 40 S&W is just a pussified 10mm.

[@nohcho84]

Which is good enough for moste people. Nothing is worng with a pussified cartridge considering how powerful the cartridge from which the pussification takes place.

[@jingq2]

40S&W still has more foot pounds of energy then 9mm and 45acp

[@mountainhobo]

@jingq2: On average (no exotic loads): 9 mm ~ 360 ft·lbs .45 ACP ~ 400 ft·bs .40 S&W ~ 470 ft·lbs 10 mm ~ 700 ft·lbs Which always made me wonder why, in my hands, fired out of Glock 22, the .40 S&W seems milder in recoil than the .45 ACP fired out of Glock 21. Is it all due to the weight of the bullet (165 gr vs. 230 gr)?

[@cephasmartin8593]

@Dwayne Elizondo Mountain Dew Herbert Camacho There are some people who say the 40 S&W is a better round, but I suspect that they are pussies, so ...

[@michaelhodges8312]

40 S&W has it’s POU as does 10mm. Both are great rounds!

[@snunez1911]

Do you regard this pistol as a better option then the Sig 220 in 10mm? I'm surprised you didn't mention the chamber support issues of the G20, and an aftermarket barrel is needed to add more chamber support and shoot cast hunting bullets accurately. Plus for the hottest loads of 10mm loads, you need to switch to a higher weight recoil spring to get the higher velocities. The standard recoil spring allows the chamber to open early degrading velocity. For these reasons I bought the Sig 220 legion 10mm instead.

[@snunez1911]

@ItalianBrownsFAN I'm pretty sure with the hot Underwood loads, there a bigger difference then 20fps

[@SmallArmsSolutions]

The Glock barrel are not designed to shoot cast Bullets, only jacketed.

[@snunez1911]

@@SmallArmsSolutions Yes, the reason why I mentioned it. Now people are buying for bear defense and the best rounds for that are cast. Therefore requiring an aftermarket barrel.

[@robkilcollins310]

Gen 4 with the dual recoil spring doesn't need to be changed. I've shot 40 SW loads to Norma spec loads and the gen4 G20 will eat it all. I reload the brass as well. If you are running too hot for a stock Gen4 G20 barrel then your above spec 37500 PSI. P220 is a lower capacity "target" style pistol. Hammer fired, and can be purchased SAO. G20 is at its core, a Glock. High capacity combat pistol with reliability as top priority. Two completely different animals. With enough practice, you might be able to shoot a G20 as well as a P220 in a practical sense. You wont however, get a P220 as reliable or high capacity as a G20.

[@hardcasthale4904]

Rob Kilcollins Agreed. Stock gen 4 will run any factory Ammo, even full house underwood etc, except the lead. I wonder if the gen 5 marksman barrel can shoot lead?, I’m thinking it can? Hmmm

[@SuperHeatherrussell]

I live in Carolina Beach NC so no grizzly bears here but I would like a weapon I can conceal that can take down a large aggressive animal for when I go camping or hunting! So my 308 Galil Ace and Glock 20 for the woods and FN 509 and 556 CZ bren for the hood

[@trumpie5399]

Costal NC has some of the highest population of black bear in the US. A lot of Record book bear have been brought out of NC costal counties .

[@JustDefense]

For two legged attackers, LuckyGunnerAmmo alleges on a video on YT that the .40 S&W delivers basically the same terminal ballistics and self defense capability (penetration) as 10mm. What’s your reaction?

[@chromosomehoarder6927]

Lucky gunner only tested big box brand ammo for there test. The issue that comes with that is the fbi load became the standard for 10mm so it is 40cal ammo with a longer case 10mm has a lot more potential than anything they tested lucky gunner tends to do this a lot. With there 9mm tests they bought top of the line ammo to compare to standard ammo in calibers like 40. 9mm is absolutely capable of great things but not in its standard configuration

[@SailfishSoundSystem]

I love sledgehammers!

[@dariusanghelescu2280]

I have a glock 40 10 mm ...A big ass hand gun😂😂😂

[@AKlover]

Don't see the point in a G20 anymore mow that there is a longslide G40. The G20 is already too big, if you are willing to deal with the bulk may as well add some barrel and sight radius length.

[@siestatime4638]

The shorter barrel might be a little easier to waist carry, especially when you're sitting, but I'd choose with the longer slide.

[@AKlover]

@@siestatime4638 I don't live in grizzly country, a 10mm is not going to be my secondary without a specific reason. I have that specific reason a few square inches extra size isn't going to change my mind.

[@robkilcollins310]

I have both and the G20 is friendlier to handle in the woods. G40 is a long stick. If you dont need an optic, and arnt shooting for bullseye groups, (most G20 users) the G20 is just as viable as the G40.

[@hardcasthale4904]

Holster availability (as in, my preferred woods carry holster) is the only thing keeping me away from the longer model 40.

[@jordanaug81]

.40 S&W stock just keeps going down and 10mm keeps going up. I hope as 10mm gets more popular, brands stop loading .40S&W and calling it 10mm. I don't have to have original norma loaded 10 but some of the crap they're branding as 10mm Auto is just ridiculous!

[@michaelhodges8312]

Stick to Underwood pal.

[@ryanranard5187]

Can’t you just buy a G21 and have a 10mm barrel then you’d have TWO powerful calibers at your disposal.

[@GRIFFIN1k]

I just bought a gen3 glock 20sf and I haven’t shot it yet but after hearing this guy say the FBI agents couldn’t handle the recoil I want to shoot it even more 😂

[@donovanchilton5817]

10mm is nowhere near .41 mag. That's .460 Rowland.

[@davidshaffer4664]

Not even close 10 mm and 44 mag is much more powerful

[@SmallArmsSolutions]

I said 10mm is similar to 41 Magnum

[@davidshaffer4664]

@@SmallArmsSolutions everyone compared the 10 mm to a 44 mag. Not even close. I own a gun in in Ohio the 44 mag is much more powerful

[@SmallArmsSolutions]

No, the 10mm is comparable to the 41 Mag, not the 44 Mag. Of course the 44 Mag is significantly more powerful.

[@jrt9380]

Best do your homework on that .41 mag comparison

[@Dr_K545]

I want to hear from the one down vote guy. Speak up....what's your problem?

[@xfliegerkorps8676]

Probably some anti-2A type.

[@coyotebrown2294]

Could be an FBI agent who aborted his qualification run with the 10mm due to excessive recoil. Could be a Polar Bear from Greenland. 10mm has lots of enemies.

[@neilarellano8470]

@@coyotebrown2294 😅🤣😂

[@robertpatter5509]

@@coyotebrown2294 Wait until they see the Underwood 155gr XTP. That's a beast.

[@floridaplumber7512]

Second!!!. HAPPY NEW YEAR

[@DEATH_TO_TYRANTS]

Happy New year to you!

[@ronniebowers1241]

I don't see anything heavy duty about a 10mm in fact I think it a piece shit

[@Halal_Dan]

More energy than .45

[@colt10mmsecurity68]

What color crayon is your favorite flavor?

[@chaplaincrabtree6881]

.40 cal is the best caliber ever

[@isawit9722]

I agree.....

[@silencerbear9347]

I love your vids. But please put up a go fund me so we can buy you a new microphone.

[@topturretgunner]

The Glock 20 would in my opinion be a good choice for a back up gun in bear country with full power loads. A home defense gun in a family setting meh 🫤. A few issues come into play. The first and foremost being something called over penetration. 10mm round blows through the burglar through the wall behind said burglar and kills your child asleep in the bed behind all this drama. Imagine trying to explain that to the police or your wife. You could also find yourself looking at a negligent homicide charge plus having to live with that on your conscience the rest of your life. This is not a time to let your testosterone overrule COMMON SENSE! I’m hesitant to use certain 9mm loads in the house let alone a 10mm. Help your family survive a home intrusion event. Keep the bear blaster bazooka for the woods. A 9mm with hollow points or an 18.5 inch 12 gauge loaded with #4 buckshot minimizes over penetration issues and is more than sufficient for home defense.