this may sound like a stupid question, but what is the difference between a glock barrel and others that causes the problem?
wiki said:The manufacturer Glock advises against using lead bullets (meaning bullets not covered by a copper jacket) in their polygonally rifled barrels, which has led to a widespread belief that polygonal rifling is not compatible with lead bullets. Noted firearms expert and barrel maker, the late Gale McMillan, has also commented that lead bullets and polygonal rifling are not a good mix. However, since neither H&K nor Kahr recommend against lead bullets in their polygonal rifled barrels, it is probable that there is an additional factor involved in Glock's warning. One explanation is that Glock barrels have a fairly sharp transition between the chamber and the rifling, and this area is prone to lead buildup if lead bullets are used. This buildup may result in failures to fully return to battery, allowing the gun to fire with the case not fully supported by the chamber, leading to a potentially dangerous case failure.
Sigh. I have fired over 45,000 rounds of my lead reloads through one of my Glock 19's with no problems. Having said that, you need to do a lot of experimenting to do it.
I have found that bullet fit is at least as important as hardness, as is the lube. I run straight wheel weights sized at .357" and lube with Lars Carnauba Red lube. Using slower powders helps too. I like HS-6, and don't run nuclear loads either. I can go through 2-300 rounds before I even need to think about giving it a quick scrub. The condition of your brass is also important. The generous feed ramps are not kind to tired old brass. Most failures are ruptures at the case web.
In my model 23, I run the same materials and size the bullets at .4015" and keep the loads on the mild side. The condition of your brass is even more important in .40. I have experienced no leading to speak of with my load.
It can be done. It just takes a bit of time and experimenting. Try a combination. Fire a small quantity. Check for leading. Adjust. Repeat.
In the early 90's, before all the hype about using lead in Glocks, that's all you would ever see used. I have never personally witnessed one hand grenade. I saw a friends 1911 spontaniously remove the mag and shatter the grip panels however. Just use some caution and approach it slowly.
Auggie D.



























