Originally Posted by Missileman
I know that Glock has recommended against unjacketed bullets in their pistols, but HK doesn't warn against this, other than a comment (when asked) that lead MAY buildup quicker in Polygonal than standard rifling. I've shot a ton of cast lead through my HKs and never noticed any more buildup than any other rifled pistols I have--in fact, I would say that my polygonal barrels actually show less buildup and clean up easier than the rifled equivilants do. Does anyone have any actual experience with problems in their polygonal barrels with lead? I do clean my pistol barrels after every range visit--normally 200-500 rounds...
For many years I shot only hard cast lead bullets from my Glocks because they were cheap to load. I never had any problems. Lead builds up in barrels and should be cleaned out, but a few hundred rounds should not be a problem.
My method of cleaning out the lead buildup was always to fire 4 or 5 rds of jacketed bullets every couple hundred rds of lead.
I also shot plenty of lead through my Steyr GB. Steyr said not to do this because of the gas operation, but other than a really messy gun it all worked out fine.
I generally like to avoid doing things that fall under the "hypothetical problem" category, but lead bullets have never caused me any grief.