Glock Barrel
- Thread starter 45acp
- Start date
I've tried to shoot cast lead out of my Glock 22 factory barrel and failed miserably. Wouldn't group at all and lots of "key-holes". I have new Storm Lake barrel but have not yet had time to get it out to test it. From what I've heard .. I won't be disappointed.
Rod B
CGN Ultra frequent flyer
I would also like to know.
AdamO
"It's not just Glock barrels. It's any barrel with polygonal rifling. If you don't clean it well and regularly, the lead deposits lead to increased pressure. Increased pressure makes gun go boom, and ruin your day."
With respect this is one of the biggest internet myths out there. I shoot a Tanfoglio with polygonial rifling and have yet to expereince any leading in the barrel. In fact after shooting the Washington State Match the gun itself was filthy but the barrel was as clean as it was when Sean sent it to me.
Friend in California has a Glock in .40cal that has never seen a jacketed bullet down it. The polygonial rifling has nothing to do with the problem of leading or the infamous kabooms encountered in Glocks.
As a police armourer pointed out to me. Guys think Glocks never need cleaning. Soot, burnt lube and crud builds up in the chamber over time, cartridge doesn't seat properly and you get an our of battery firing ie Kaboom. If you shoot lead bullets you will get more crud build up from the burnt lube then you do shooting jacketed bullets. Just clean your guns after use.
TPK - I would bet money the bullets you were using were undersized for your barrel. I have sized 9MM bullets .355 and had them key hole inside of 10'. If your bullets are undersized for the Storm barrel you will get the same results. If on the other hand they are at least 1/1000 over bore you should be good to go.
Take Care
Bob
"It's not just Glock barrels. It's any barrel with polygonal rifling. If you don't clean it well and regularly, the lead deposits lead to increased pressure. Increased pressure makes gun go boom, and ruin your day."
With respect this is one of the biggest internet myths out there. I shoot a Tanfoglio with polygonial rifling and have yet to expereince any leading in the barrel. In fact after shooting the Washington State Match the gun itself was filthy but the barrel was as clean as it was when Sean sent it to me.
Friend in California has a Glock in .40cal that has never seen a jacketed bullet down it. The polygonial rifling has nothing to do with the problem of leading or the infamous kabooms encountered in Glocks.
As a police armourer pointed out to me. Guys think Glocks never need cleaning. Soot, burnt lube and crud builds up in the chamber over time, cartridge doesn't seat properly and you get an our of battery firing ie Kaboom. If you shoot lead bullets you will get more crud build up from the burnt lube then you do shooting jacketed bullets. Just clean your guns after use.
TPK - I would bet money the bullets you were using were undersized for your barrel. I have sized 9MM bullets .355 and had them key hole inside of 10'. If your bullets are undersized for the Storm barrel you will get the same results. If on the other hand they are at least 1/1000 over bore you should be good to go.
Take Care
Bob
That's a very real possibility, I'll know more once I try the new barrel. If I get the same results I guess I'll have to do what I should have done to begin with ... slug the barrel and see where I'm at.
Unfortunately I too easily buy into these "myths" and just assumed it was the factory barrel that was the problem. Oh well .. on the bright side, the new barrel has a better supported chamber so I won't blow myself up because of the "Glock" bulge when I reload .... oh hang on .. there I go again ...
The Glock "bulge" appears more in the .40cal in my experience. The Lee resizing die seems to get rid oif the bulge pretty well. I found the Dillon sizing die would not go down quite far enough.
The 9MM barrels vary quite a bit in diameter though newer guns are much better at staying close to the .355 spec. I would measure some of your commercial lead bullets you are using. I suspect it is the bullets more than the barrel that was causing the keyholing.
When I buy lead bullets, which isn't very often I buy them from The Bullet Barn. Prices are reasonable and service is fast. I should add they also sponsor our Provincial IDPA tournament so I do have a dog in the show sort of.
Take Care
Bob
The 9MM barrels vary quite a bit in diameter though newer guns are much better at staying close to the .355 spec. I would measure some of your commercial lead bullets you are using. I suspect it is the bullets more than the barrel that was causing the keyholing.
When I buy lead bullets, which isn't very often I buy them from The Bullet Barn. Prices are reasonable and service is fast. I should add they also sponsor our Provincial IDPA tournament so I do have a dog in the show sort of.
Take Care
Bob
