![]() Tried store bought cast like Missouri or Keade and a couple of Black moly coated and none left any lead to speak of in my barrels. Even tried very light tumble lubing that gave me a shiny/clean bore but found the lube residue too messy. Mostly cast by me, sized to standard diameter and never had leading. I have a couple of Wolf barrel'd Glocks and one with a KKM, feed them exclusively lead bullets. Sorry to hear of your problems, I suppose anything is possible.but not sure if the throat would have anything to do with leading. I'm not saying that a tight chamber is never the problem but I think most have issues with a tight throat. Most lead bullets have a larger diameter and the throat of the LW seems to be to jacketed dimensions. ![]() Throat reaming "shaved" metal from the barrel just forward of the chamber allowing the round to chamber completely. With my G35 LW barrel chambered in 40, I had to ream the throat because I seated long and the bullet was contacting the barrel. In most cases I have seen, it needed to have the throat reamed because loading long or as mentioned earlier, larger diameter of lead bullets. If the marks are on the case, chamber reaming is in order. If the marks are on the bullet, you need to ream the throat. ![]() Smoking the round could make areas of interference more obvious. The way to determine which issue you are having is to chamber (by hand or slide) a problematic round and inspect for marks on the brass or bullet. Throat reaming allows larger diameter bullets and/or seating your bullet longer. Chamber reaming will get you a looser fit for the cartridge case whereas throating or reaming the throat will net you looser fit for the bullet when a round is chambered. ![]() There is chamber reaming and throat reaming and each removes metal from a different part of the barrel. There is more than one type of reaming when discussing barrel reaming. ![]()
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