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Old 12-08-2013, 15:13   #1
tjf76
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New barrel needed?

Bought a gen 4 G20 and the only ammo I plan on shooting is underwood 220gr hard cast, this will be my woods carry sidearm. Should I replace the factory barrel? Anyone shot this ammo and have any problems? I have fired about 30 rds of it with no problems but I am being advised by some to replace it.
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Old 12-08-2013, 17:25   #2
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Originally Posted by tjf76 View Post
Bought a gen 4 G20 and the only ammo I plan on shooting is underwood 220gr hard cast, this will be my woods carry sidearm. Should I replace the factory barrel? Anyone shot this ammo and have any problems? I have fired about 30 rds of it with no problems but I am being advised by some to replace it.

I can't remember if those are gas checked bullets or not. If not, I would just keep an eye on leading. If the leading remains light (or not at all) and the bullets stabilize (accuracy seems good), then keeping it stock will certainly improve reliability.

Last edited by WeeWilly; 12-08-2013 at 17:26..
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Old 12-08-2013, 19:19   #3
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Being cast. And heavy I would get a kkm barrel. The stock will work. As long as they don't start to keyhole.
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Old 12-09-2013, 19:10   #4
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I would let paper decide for you. If you are getting good function and groups without excessive leading, then why mess with things?


Likely this is a round that you won't shoot a lot anyway.
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Old 12-10-2013, 08:05   #5
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I would agree, try the stock barrel and see how that works. Out of my Gen4 20 with some 200gr WFNGC handloads, I was getting incredible accuracy for the first 3-4 shots, then some leading began to open up the groups. I did buy a KKM barrel for it, mainly for it's better support and more traditional rifling, plus it's easier to clean lead out of than a stock Glock barrel.
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Old 12-13-2013, 21:19   #6
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Did some testing and I am getting some "keyhole" with the factory barrel. Going to purchase aftermarket barrel.
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Old 12-14-2013, 02:46   #7
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Did some testing and I am getting some "keyhole" with the factory barrel. Going to purchase aftermarket barrel.
Good decision. For anyone shooting a Glock, read the owners manual and follow directions. In the manual, it says no lead bullets. Period. It is not an off hand comment, a suggestion, or an opinion, it is a stern directive, for good reasons.

With lead bullets, the polygonal or hexagonal rifling can cause enough internal pressure, the sound you hear may not be a bang, but a boom.

A KKM or other traditional riffled barrels are needed to shoot lead ammo.

Have some shot lead ammo in their Glock barrels and been OK ? Sure, but why risk death, dismemberment, or injury?

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Last edited by ShallNotBeInfringed; 12-14-2013 at 02:47..
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Old 12-14-2013, 09:31   #8
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Not to mention Keyser Soze...
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Old 12-15-2013, 15:57   #9
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I ordered the Lone Wolf barrel today. We will see how it does.
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Old 12-15-2013, 19:46   #10
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I ordered the Lone Wolf barrel today. We will see how it does.
keep us informed how it works
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Old 12-15-2013, 19:55   #11
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I have a LW 4.6'' g29 barrel I use in my g30, I still need to get
an extractor and file it down .020''.

I shot 10 of the LW 220gr, they went 1194fps
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Old 12-15-2013, 22:26   #12
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Good decision. For anyone shooting a Glock, read the owners manual and follow directions. In the manual, it says no lead bullets. Period. It is not an off hand comment, a suggestion, or an opinion, it is a stern directive, for good reasons.

With lead bullets, the polygonal or hexagonal rifling can cause enough internal pressure, the sound you hear may not be a bang, but a boom.

A KKM or other traditional riffled barrels are needed to shoot lead ammo.

Have some shot lead ammo in their Glock barrels and been OK ? Sure, but why risk death, dismemberment, or injury?

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Not to be argumentative, but Glock also has the same stern warning about shooting reloads.
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Old 12-16-2013, 04:20   #13
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Some warnings are for suitability, some are for liability and some are for reliability. As a consumer, we are sometimes left head scratching as to what we just read.

A child's swing set owners manual with extensive assembly required, says tighten all nuts, bolts weekly. Yeah right, like anyone does that.

Forums are sometimes the only place to get good answers on things. Trouble is, weeding out the good answers.

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Old 12-16-2013, 04:57   #14
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Hickock45 has a couple of good videos about this on YouTube. His gun was spraying bullets all over the place until he put in the Lone Wolf barrel and then it was dead accurate. If I was going to hunt with mine I would need to replace the barrel anyway. The 4.6 inch barrel is too short to comply with Ohio hunting regs.
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Old 12-16-2013, 05:37   #15
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Hickock45 has a couple of good videos about this on YouTube. His gun was spraying bullets all over the place until he put in the Lone Wolf barrel and then it was dead accurate. If I was going to hunt with mine I would need to replace the barrel anyway. The 4.6 inch barrel is too short to comply with Ohio hunting regs.
Interesting.

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Old 12-16-2013, 19:35   #16
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All I plan to shoot it lead cast bullets, underwood 220. I feel better safe then sorry so I ordered the wolf barrel
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Old 12-21-2013, 00:19   #17
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I would let paper decide for you. If you are getting good function and groups without excessive leading, then why mess with things?
There, it's said. Couldn't possibly have said it better--and god knows I wouldn't have been as concise. But, as mentioned, it is my experience that the aftermarket barrels can make a difference depending on the bullet you're running--nothing to do with leading or all that, but I imagine simply rate of twist and the bullet weight you're running.

I see some of my handloads tumbling at 5 yards--I believe these are the 135s and 155s pushed to hypersonic speeds--and I'm not sure the barrel makes any difference. I run Lone Wolf in both the G29 and G20, and the only difference I see that's significant is that they won't feed the nasty brass the stock barrels will.

So, as mentioned many times elsewhere--when it absolutely positively has to feed, regardless of accuracy--go sloppy stock. When you're trying to print paper real nice, that may be the right time to play with the aftermarket barrels. I do 'em both.

My feeling is--a 4" group at 7 yards is just embarrassing at the range, but it'll be wonderfully magnificent in the bank lobby or the liquor store. I'll take it.

Last edited by Bongo Boy; 12-21-2013 at 00:28..
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