Glock 19 Factory Barrel vs KKM vs Lone Wolf Barrel

Side by side comparison of factory barrel, KKM barrel and Lone Wolf barrel - checking for differences in accuracy, POI, velocity, chamber sizes, and chamber support. Shooting portion of video begins @ 2:53 Conclusion starts @ 7:07
Ammo used: Underwood Ammo 9mm 124gr +p+ GD JHP
www.underwoodammo.com
Barrels used:
Lone wolf barrel - www.lonewolfdist.com
kkm precision - www.kkmprecision.com
glock factory - www.glock.com

[@CapitalCreators]

the only way to get a real idea of their accuracy is to strap the gun to a set up that cant move and ALWAYS aims in the same direction

[@AmmoTest]

+KurtleTheTurtle agree 100%.

[@teflonvaughn1470]

I question the accuracy of virtually every test I saw in this video lol

[@Ronbo710]

Just got the ported Lone Wolf for my 19 and it is AWESOME. Even though mine is a Gen 3 it works with the Winchester 115 grain with no objections.

[@ChandlerWrites]

The Lone Wolff chambers are notoriously tight and short. I bought one to shoot lead through my G34 (the only bullets we could get for our reloads) and it was very finicky, especially with reloads that hadn't been sized all the way to the base (the Glock chambered these fine). My friend had a Wilson Combat that didn't suffer the same issues. If I had it to do over, I'd spend a little extra for the KKM and avoid the chamber issues so many report with the Lone Wolff.

[@LS6WS6]

Love my KKM G31 .40 barrel!

[@dilutedrep2864]

Unless you are able to shoot groups one on top of each other its not even worth comparing . The barrels are more accurate than a normal human can shoot . I would use the glock barrel for protection and wear out the other two jmho

[@aadd62]

Great video very informative, thank you.

[@dawg141]

Good video. I was thinking about getting a new barrel for for my Glock 19, but now I will keep the Glock barrel.

[@QRFCombatVET]

+dawg141 smart move buddy

[@DANVIIL]

+dawg141 I"d rather put the money into ammo. Don't see any objective reason to change out the G19 barrel.

[@brysonw1815]

+Danvil getting a g21 next week not getting a lonewolf barrel now just gonna invest in ammo

[@DrDiff952]

You should consider a Match grade barrel if you are going to replace the factory barrel for any reason at all.

[@seanm7553]

Aftermarket barrels jam to much. Always go with stock for reliability.

[@BallisticianX]

I can explain the velocity differences, I'm surprised the KKM was as close to the Glock barrel as it was. Velocity differences with the same ammo in different barrels is caused by a few factors, how many lands and grooves and the surface area of the lands. Then there is the rate of twist. It is no surprise the KKM was the slowest as they usually use a slower rate of twist than most. A slower rate of twist reduces resistance and less resistance creates lower pressure as the propellant burns while traveling down the barrel. KKM uses twist rates they proofed for optimum accuracy in . There barrels are built in mind for sport and competitive shooting where 115 &124 gr. pills are the go to loads thus the twist rate is based on those weights. Most manufacturers, like Glock, use faster than optimum rates for 115 &124 for two reasons, 1) to aid in hollow point bullet expansion of all available bullet weights through faster rotation of the bullet in flight and impact, 2) to better stabilize the 147 gr pills that are generally popular in defense or LEO loads. Also if you want to measure the chamber accurately get yourself some hole gauges. You cant accurately measure an inside radius with verniers.

[@whatfreedom7]

I noticed in a side by side comparison between a Glock and Kahr .40 the Kahr was hitting the steel targets visibly harder. The guy responded to my comment and thought the twist ratio was a factor. It’s crazy how that seemed to have a effect.

[@SowersProductionz]

Thanks man I needed this

[@gtscc9977]

I don’t know if I’m crazy but my kkm barrel feels like it made my Glock much much more accurate, groupings are better , and I couldn’t be happier it’s amazing

[@Tony_Seed]

It’s your imagination

[@gtscc9977]

@@Tony_Seed the groupings don’t lie 🙃

[@BNatoAk]

Your not crazy! People that can't shoot will say different.

[@BNatoAk]

​@@Tony_Seed life's short, learn to shoot a pistol.

[@gtscc9977]

@@BNatoAk I’ve had it for over a year now, and have got a few more handguns in my collection and yes that KKM barrel really does make a difference I recommend it to anyone

[@dennisloftis5290]

Excellent video! Evaluation results were collected scientifically and objective based using actual data vice opinion or here-say. Nice to see an evaluation that is unbiased. I considered replacing my Glock barrel but the results of the testing showed that the stock Glock barrel performed the best. Good job and thanks for the video.

[@nukebuilder]

Good test showing some useful info. Thanks for making the video.

[@QRFCombatVET]

In the beginning of this video when he shows all 3 barrels right next to each other. You can totally notice the standard Glock barrel has very precise, and has perfect cut edges. The other 2 barrels are really rough and look all jacked up. Also they look like somebody with no experience took a dremel and tried to make a barrel.

[@chgofirefighter]

Isn't lone wolf barrels made in Asia vs KKM made in America? Lone wolf is far cheaper than KKM but competitive shooters prefer to use KKM barrels, also KKM barrels are used in many military operations and shooting teams so that has to mean something. But you are correct, better rifling on the KKM/Lone Wolf

[@82luft49]

LW barrels are made in South Korea

[@appelsinsaft]

Really looking forward to your ransom rest results! :D

[@AmmoTest]

yeah i can't wait til it's warm again!

[@joshua229]

Great video! I'm trying to decide on a threaded barrel for my Glock 19 with AAC Tirant 9S suppressor .

[@SteveZ919]

Its been 8+ years....have you come to a decision?

[@yandriarce2439]

Good velocity comparison, it shows the Glock barrels polygonal rifling does what it claims, the accuracy portion of the testing was inconclusive

[@nosurrender7275]

always wondered if that rifling was really worth the machining process cost...I assume its a major contribution to glocks being on the pricey side...a Smith and lesson sd9 is nearly 300$ cheaper and aside from the barrel in gen 3s and prior are the only real difference...I own a 19 ( have owned 4 total) and an sd9 and the sd9 doesn't make me feel at all less secure when I carry it instead of the 19

[@olsongregory2516]

No Surrender polygonal rifling directly designed for submachine guns to be cheaper to produce and more durable under heavy fire

[@kimness7796]

I think the polygonal rifling (and a hard bbl) is supposed to wear less in service. As in 10K rnd life. Try that with a 1911.

[@BigHead104]

That was helpful! Thanks for the video! :)

[@AmmoTest]

your welcome. thanks for watching.

[@thehamburglar9mm]

Great comparison. I am looking to replace my G23C barrel with a non "C" and am having a hard time deciding between Lone Wolf, Storm Lake and KKM. The price difference seems to not reflect on performance it appears.

[@AmmoTest]

I'd go with a factory or kkm. IMO the recent lone wolf's seem to not have enough case support. See my kaboom video. storm lakes seem to have a super tight chamber - if it works your golden if it not then I've heard less than desirable experiences with their customer service.

[@nickkopf3844]

Looking into my first Glock I know a few things about putting my own spin how id like it to shoot. Any other suggestions for what I could do??

[@larrynaron8957]

sweet video nice job!!!!

[@SINESTERSERPENTSIXXX]

i got a kkm match grade with the external compensator in 357sig and it makes a big difference in the reduce muzzle flip

[@kimness7796]

That's why you use an external compensator.

[@DrDiff952]

Not a big fan of the glock barrel, but it outperforms the other two!

[@stephenmartin9393]

I am not a fan of Glock s with polygonal barrels. I use cast lead bullets far more often than jacketed bullets.

[@dgreenapple]

Excellent video! Real data and not all opinion-based. Nicely done! Makes me sorry I spent $250 for an aftermarket barrel. Once again Gaston Glock's genius shows through -- not bad stuff that Glock equipment...

[@kimness7796]

Good video. Shows what I believe: Average shooters should stick with the OEM bbl. I know that I throw the rounds, not the bbl. Cops that fire 37 rnds at a suspect don't need a KKM bbl... I shoot hardcast 124s from my OEM G19 and G26. No leading at all, but I clean after 50 rnds. I Like that ammo-1320 fps is .357mag performance.

[@topherd1011]

Question... wth are you aiming at?

[@AmmoTest]

Overall I think it's a better barrel. Especially when the first shot counts. Honestly I think the factory barrel is fine (in 9mm) as long as it shoots good.

[@LYLEWOLD]

great vid. I love my 19, favorite gun. 460 Rowland is making a 9mm conversion (960), starting with the 19. would love to see that one run through its paces.

[@AmmoTest]

i heard about that. that would be pretty bad azz!

[@MinimalistMotoLife]

960 Rowland is basically a 9x23 win(actually the weaker 9x23 comp) just with the bullet seated deeper. pressures are insane and make 10mm, 460 rowland and other "high pressure" rounds look mild. performance is actually slightly worse than a 357 sig out of the same length barrel despite the higher pressure because it lacks case capacity. of course you get the extra 1 or 2 rounds per mag since it is a smaller case. now the 960 rowland in something like a PF9 I would be more impressed. that would need one stout recoil spring....

[@LYLEWOLD]

interesting

[@AmmoTest]

check lone wolf's website - under Canadian extended length barrels I see 107mm. 107mm = 4.2" If your patient you can usually find a used kkm for about 100-115. I'd opt for kkm over lwd any day.

[@QRFCombatVET]

I like to know, Why are so many people buying after market barrels?? I do not see anything wrong with the standard barrels. Plus I do not see any improvement in accuracy either with other brand barrels.

[@papercitypauper8746]

+Q.R.F. CombatVet ....people buy them in hopes that shooting lead rounds down an aftermarket will save thier factory barrel that Glock doesn't recommend shooting lead through. NBD, just thought I'd mention it.

[@ewilsonheritage]

+Q.R.F. CombatVet I shoot USPSA and IDPA, and reload all of my own ammo. Most of the time I shoot a lead bullet coated in a product called Hi-Tech. You can shoot this through a Glock barrel, but as someone else mentioned, you can not shoot straight lead through a Glock barrel. This is why people choose to get aftermarket barrels. And KKM makes an incredibly accurate barrel by the way.

[@ewilsonheritage]

I use aftermarket because in practice, I often will use raw lead bullets. I reload all of my ammo and could not tell you when the last time i bought commercial ammo for my pistols.

[@simonasimona2802]

5yyyko.g nnk00

[@DrDiff952]

After market won't clog the riffling as it has deeper riffling. But if you combine that with a loser fitting of the brass in the barrel you gain as much as you lose. A match grade barrel should hold the brass tighter than the factory barrel.

[@deadlyalliance8281]

Got a KKM for my glock 21 Gen 4 to have more chamber support for 45 super/smc

[@fjc11212]

good info chief

[@Learjett007]

Can you shoot reloads in the Lone Wolf, and KKM barrels? Thanks!

[@TheSagerider]

Interesting! Good job! :)

[@sameenmarwat0015]

Plz tell me.how much is wolf barrel life time and its performance is ..? Which will be best for me

[@Jp-mn1rq]

Has something changed with KKM? Their website says their barrels have fully supported chambers.

[@legalsolutions07]

Regarding accuracy, and trying not to be too critical, you would have been much better off shooting from seven yards out and putting the gun on a bench rest. Your shots were so off you're lucky you didn't shoot your machine.

[@nosurrender7275]

haha

[@kimness7796]

Perhaps, but this was a "real world" test. Machine rests aren't allowed at bowling pin shoots.

[@graycloud057]

legalsolutions07 -Absolutely !

[@saleemsuliman3062]

You mean to say is that opposition is against 2nd ammendment because averge joes are lousy shooters No shit IDidnt know that.

[@sandeepdas7328]

@@nosurrender7275 আমি এউ করে এইনৌন ঞ

[@cyclicrate834]

I have the KKM barrel in my Glock 19 and it is a shooter. It shoots so well frankly I think its a fluke that it just happened to fit up perfectly with my slide or something. It isn't a placebo affect either as I have several 19s and shoot this one significantly better than the others. I ordered one for a Glock 17 build to see if I could replicate the results, we will see...

[@bbyshady]

Did you end up getting the same results?

[@theowhowe83]

I have a lone wolf barrel. I bought it because they are rifled instead of hex like the glock factory, allowing me to shoot cast bullets. The trouble I have with the lone wolf barrel (other people have the same problem) is that if you shoot reloaded ammo, the casings had to have come from the lone wolf barrel or be brand new brass. If it has been shot through the factory barrel, the brass has the "glock bulge" and won't chamber in the lone wolf barrel. I have to slam the slide to chamber it.

[@whatfreedom7]

Isn’t that something you should do when reloading anyway? I thought they shrunk the case back and trimmed the edge for stretch. Maybe I’m wrong since I’ve never reloaded.

[@AmmoTest]

Thanks!

[@electrochubb]

Great test..conclusion.? Keep the stock GLOCK barrel.

[@edc357ian]

thank you bro!

[@newwavepressure6478]

I hear a lot about the Glock barrels not being supported and reloads blowing out the bottom is that the case with just a 40 calibers because the 9 millimeters lone Wolf looks just like the stock one

[@AmmoTest]

yeah seems to be caliber specific. It's been a while so I couldn't say if they have changed or not. I blew up two glocks with lone wolf barrels. They did nothing for me. Slides were fine. frames were toast. I sent frames to glock and paid about $100 ea to have replaced. Glock sent frames with new serial #s to my door no added FFL. I suppose they can do that since they have me on record as to where each serial # went. Anyway, tossed the barrels. G27 40sw and G20 10mm. All that said I still have a G22 lone wolf barrel which has full support and a G19 lone wolf barrel with full support.

[@meangreen320]

Glock stock barrel is perfect and more durable than most aftermarket . Only issue is repeatedly using lead hardcast ammo. Unless you want to feed any trash ammo or hardcast without issue, or want a comp/extended barrel for target shooting, Save your money and stuck with stock.

[@lmonkeybonezl]

Excellent

[@mrmidnight32]

I just bought the LW 4.2". Found it online for sale $95 shipped new Figured I wouldn't beat that. Why do you prefer KKM over LW?

[@mrmidnight32]

Is that the 4.2" one? Im looking to buy one for $90 but its listed as the 4.2". Wiki says glock 23's are 4" barrels. I just want to be sure im not ordering the extended barrel. I want the flush like the factory barrel. Is that the 4 or 4.2"?

[@theowhowe83]

This means that for a match, I have to use my factory barrel so that I don't run the risk of having that one out place piece of brass that ruins my time because I have to slam the back of the slide to chamber, or slam it open because it wouldn't eject.

[@BluePatch-pc7sx]

Very nice thank you Sir,

[@johngentle2520]

Wow I guess unless you're looking for some bling the stock barrel wins hands down. Better support = higher velocity = lower deviation. Thx for the vid.

[@AmmoTest]

yeah when it comes to 9mm in glocks I really like the stock barrel. Unless you need a threaded or some other setup. Then my preference now would be Barsto precision. I'll be re doing this test some time this summer with a ransom rest.

[@cwdl2004]

Can u make one using the double diamond barrel from glock store see how that one does ?

[@kimness7796]

The GS DD bbl is Lone Wolf.

[@irishone716]

Lone Wolf barrels are suspect. I got the Lone Wolf Alpha G23 40-to-9mm conversion barrel. It will not chamber some of the off the shelf CCI 9mm rounds (not reloads). I sent the barrel back to Alpha twice and it's no different. I sent casings along with it to demonstrate. They were like a cork in a bottle and jammed in the barrel They work fine in 12 other 9mm pistols I have as well as another after market conversion barrel. Alpha even went as far as to tell me that the casing must have expanded when fired in a Glock because of loose tolerances in Glocks. I told him, for the 4th time, that it wasn't fired in a Glock. And the spent casings still fit in all other 9mm pistols perfectly. If you want a 9mm barrel, and you want to be able to get rounds off the shelf and know they will work, don't get an Alpha. When I told them I'd take them up on the offer to refund, they stopped responding to my emails. I have all the emails to go along with the story - complete with names and dates.

[@MrFilmMakerNumber2]

Keeping my Glock 30 stock. It works every time!

[@barefootbob1269]

Yes I always laugh at people pissing away money on barrels 99% don't group well enough to tell the difference anyway. Only true test of a barrel is in a ransom rest to see what it's really doing.

[@JohnDoeEagle1]

@@barefootbob1269 I always laugh when people do videos like this trying to show accuracy and they suck as a shooter. He is inside of 50 feet here......they should all be in the black OFFHAND if he was even remotely competent. Proof just because you are "technical" savvy guy who knows computers, how to film, produce, upload videos doesn't mean you can shoot for shit!

[@cz1always608]

Was going with Kkm until I saw this vid and how bang up it get . Save my money and get a lone wolf. Thanks

[@JohnDoeEagle1]

+Jerald K Anything will show excessive wear if you keep shooting +P+....PLUS in it.... Jesus!

[@thetruth418]

+John Doe Yep, exactly.

[@neonpaintsplash]

+John Doe I'm guessing you bought a kkm

[@nosurrender7275]

+John Doe I know if ur going to shoot +p+ just buy a glock subcompact. 357 sig...there's a reason they don't just load all 9mm with that amount of powder...

[@artyfortysinco4878]

hi sir I'm looking for the kkm precision barrel for my glock 21 in .45 super and I cant seem to find it on their website? any idea or how about a link????

[@AmmoTest]

45acp and 45super are same dimensions. 45 super cases are a little thicker and run higher pressure. To run 45super in a barrel. Said barrel should have full chamber support. So I would simply call KKM and ask them if they are ok with you firing 45super in their 45 barrels.

[@lewisgm4128]

Nice vid, with good comparisons. However, I wonder about the chamber measurements. The 9mm is not a straight case; it has a slight taper. If you did not measure at the exact same depth, the diameter will be different. I bought a Lone Wolf barrel for my Glock 20, and the difference in chamber dimensions was significant, when comparing the same round dropped into each chamber. The Lone Wolf barrel had much less "wiggle" room than the Glock barrel. The Lone Wolf barrel also has less of an unsupported chamber than the factory barrel. I did not try an accuracy comparison, because I bought the Lone Wolf so I could shoot lead bullets without worry. Again, nice video. Thanks!

[@patriot4life386]

I'm with you, I bought the Lone Wolf barrels in 40s&w and also in 10mm for my G20 so I could shoot lead. In wanting to shoot heavy high velocity rounds I wanted maximum shell protection and the Lone Wolf has better case support than the stock Glock barrel.

[@joshuabolus1149]

Look at KKMs grouping...it'll do what it's designed to do, nuff said.

[@gregv8690]

Dude, are your sights off?

[@AmmoTest]

I'd probably go with KKM or Bar-Sto or factory threaded.

[@markchambers8641]

Do they make different twist rate barrels for handguns??

[@kimness7796]

Yes, diff bbl makers CAN use diff twist rates. And that makes a difference.

[@stand4god574]

I had an alpha wolf in my g19 had no issues at all until i had one round that the bullet was pushed down into the case further than normal....Boom, it blue up on me. Split in half down the length of the barrel. Movedon to KKM

[@ceo20561]

So which Barrel won???????

[@D.L.W.]

If you're shooting +P+ 9mm why don't you just shoot 40 caliber?

[@naposthecavalierkingcharles]

Once again we see that Glock OEM is superior to any aftermarket option in every way.

[@stockbore]

Do they all run with the stock recoil spring?

[@kimness7796]

Yes, the bbls are all the same anyway.

[@grantorino2009]

Good video. I enjoyed the test. Thanks for your work. Perhaps the bitches posting here could submit their own accuracy tests with various barrels and impress us all with what I'm sure is unparalleled shooting ability.

[@AmmoTest]

grantorino2009 lol

[@4deuce31]

lol, he needs to shoot it more, period.

[@steve110klx]

Wasn't meaning to say you suck just thought maybe you don't shoot your 19 as much. In love my 19 and shoot it way better than my 34 which I don't have that much range time with. Good vid keep it up👍

[@G5Hohn]

In all fairness, the LW may not have enough support for what you were trying to do with them. That's different that not having enough support, period. Hot loads in reloaded brass are pushing it. Reliability comes at the price of brass life and maybe accuracy. You can get better accuracy AND better brass life, but you sacrifice reliability to get it.

[@larrysledgejr1330]

Can a glock 17 shoot +p and/or +p+ no problem?

[@kimness7796]

The G17 frame is the same as the G22 frame (.40 S&W) so yes. But wear will of course be increased.

[@mlongbsa]

How long have you owned each barrel and the amounts of rounds of each prior to this video. Your ramp on the Lone wolf looks Much more broken in to me.

[@AmmoTest]

all had less than 1000 rds on them...which isn't much when one considers the life of a 9mm pistol barrel...approx 100k+ rds. (based on a popular throat (rifle) erosion calculator)

[@user-hb1uo6vq3j]

The wolf art on the lone wolf barrel is LOL

[@skip4309wtf]

I think the stock barrel will be sufficient 99% of the time IMHO YMMV....

[@AmmoTest]

I agree

[@AmmoTest]

my understanding is kkm warranties reloads (still be careful) and lone wolf does not...I would be especially careful with a lone wolf in 40sw or 10mm.

[@ihategooglepolicies6297]

Frank Underwood approves

[@johnniemallari83]

Ill go for the factory glock barrel,,,

[@DrDiff952]

I don't recall you saying that the after market barrels were match grade or not. A Match grade barrel will be tighter than the factory barrel. This allowing less energy expanding brass and more energy pushing the projectile out of the barrel. If these were Match grade barrels I would not waste money on them!

[@kimness7796]

Define "Match Grade"? Every aftermarket bbl claims "tighter chamber".

[@eddiearchuleta615]

Boy how Underwood has sucked in their current ammo the 357 sig gold dot used to be 1600 from a g31 now it’s 1480 I tested yesterday

[@wooddawg4868]

I say there is no need to buy an aftermarket barrel for a Glock. If you shoot a lot of lead and I mean a lot maybe go aftermarket. But the factory barrel will shoot anything including a fat reload or two that may be in your batches with no worries.

[@kimness7796]

Clean your bbl after each hard cast session and you'll be OK.

[@michaeltreatch]

I've had KKMs on all my Glocks. There was always increased accuracy with the KKM. 😁

[@thealize808]

Could you use any brand of ammo?

[@WhuDhat]

did you also have chips missing on the locking surfaces?

[@BallisticianX]

When a "product comparison" is done you need the expertise and understanding how to do so in order to not spread incorrect information. A; measuring the diameter of a hole (in this case the chamber) you can not get a reliable measurement with the jaws of a caliper. The flats on the caliper result in an inaccurate measurement by contacting the radius off center. You need a hole gauge or plug gauge to do this. B: Explain the parameters of your accuracy testing. Im not sure if you were shooting off a bench or free hand. Without knowing if you took some precautions to eliminate human error the test is inclusive.

[@designated_hitter_EGA]

no offense intended, but I've seen have sen shooters (including mysely) not able to shoot a KKM to it's full potential. Proper practice will imporve your grouping.

[@AmmoTest]

If you can afford it I'd highly recommend a Bar-Sto. See my glock vs redbull at 100yds video heh

[@AmmoTest]

well if my shooting equally sucks i.e. the same for all 3...then you should be able tell something. Anyway, I bought a ransom rest and will be re doing this test at 25 and 50yds. Then we'll all know for sure

[@QRFCombatVET]

I will never buy a Lone Wolf or a KKM barrel. If they look all rough and unprofessionally made, I would hate to see how they perform.

[@tibora13]

Glock 19 barrels are fine, 10mm on the other hand has to be swapped out for aftermarkets.

[@colbyc.6698]

I guess I can't count

[@seanm7553]

All aftermarket barrels jam to much. Use them for the range only. Stock for SD.

[@austinbaker8024]

my mans that aim

[@dandowney685]

No offense intended... but for all of the equipment you have, you really need to perfect your shooting skills with more range time. You were at 15 yards and only hit the target once? Buy cheaper ammo and develop your technique.

[@peacesouljer1452]

+Dan Downey let's see your targets please

[@peacesouljer1452]

P.S. look at his consistency not his accuracy

[@MrReef101]

+PeaceSouljer 1 +1 on consistent

[@82luft49]

Dan Downey, keep in mind that he was shooting +p+ ammo. A difficult (recoil) bullet to handle. Why he chose this round is anybody's guess. Better test if he used standard 115, 124. or 147 grain.

[@kimness7796]

Actually pretty good shooting, save for one Lone Wolf rnd. High grouping, but I've done that too.

[@Bushwhacker-mb3uh]

Too much finger on the trigger?

[@LeonardMichaelis]

I don't know how the Lone Wolf barrel performs but the KKM sucks. At 25 yds the group is much wider spread than the factory barrel.

[@jdclvlnd]

I'd go bar sto all day

[@user-oy9zy4ds9m]

Polymer framed guns come with an inherent flaw and that is the 'limp wrist' malfunction.

[@bigdaddy5872]

+Joe vazquez I had a S&W 915 that did the same thing.

[@user-oy9zy4ds9m]

What if you are injured to the point that you cannot get a good grip on the gun. What if your a frail old lady or old man with severe arthritis in their hands and very weak. Polymer framed guns are more likely to fail on them. Good thing though atleast the first round will shoot.

[@venomea]

Train!

[@985shane]

Kkm over lone wolf any day

[@mikesmith468]

awful shooting

[@pickin4you]

You cannot do proper velocity checks with factory ammo. They would need to be hand loads and hand trickled in, not dump charges of powder, and a string of 10 shots through your Glock barrel for a control average. You have shown that the Glock barrel gives you the best accuracy for THAT ammo, but checking velocities per barrel makers cannot be done with ANY factory ammo, or any hand loads where the power charge is dumped in. Each charge must be as accurate as possible. This is what keeps your velocities closer. So other than accuracy, the results are .. well kind of non-existent. As far as one poster talking about twist rate, this has nothing to go with it. Since the barrels are different, you want to find the one with the most consistent muzzle velocity from shot one to shot five. The actual speed does not matter. This again is why factory ammo will not work for a test like this.

[@myfullnameishere9485]

On the contrary, the OP's experiment has reasonably proven that despite using factory ammo and only shooting 4 rounds per barrel, the resulting variance in speed is so small (less than 1%) that there is no practical advantage in speed between one barrel or another. It can therefore be further surmised that even if all rounds were perfectly loaded with the exact same charge, or even if he shot a hundred rounds in each barrel, one would likely end up with similar (and perhaps even more negligible) variances as the OP had proven with a simple experiment of 12 factory load shots.

[@ronalexander4955]

Big difference but you won’t see it shooting that ammo.

[@colbyc.6698]

Glock barrel was only shot 4 times

[@AmmoTest]

are you sure?

[@fatbowe]

Just 15 yards...something ain't Right..