R.M.
06-03-2006, 02:54 AM
I've just had a machinist friend of mine make a new barrel for my Walther GSP .32 S&W Long. I'm after a faster twist rate than the original. We got a .303 barrel and fabed it up. The chamber reamer we got was about .005" larger than the original barrel, so we got a straight chucking reamer of the appropriate size. He turned on the lathe a 1.5 degree lead past the straight chamber.
After about 50 shots, I'm getting leading smeared on the lead, smeared on the chamber wall, and a build-up of lead on the transition wall from the chamber to the lead. The chamber diameter is actually a couple of thou smaller than factory, but the gun functions perfectly. I've fired about 200 rounds through it without a hiccup, just the leading.
Is this something that might go away with use, or should we be looking at our chamber profile?
Any ideas???????
After about 50 shots, I'm getting leading smeared on the lead, smeared on the chamber wall, and a build-up of lead on the transition wall from the chamber to the lead. The chamber diameter is actually a couple of thou smaller than factory, but the gun functions perfectly. I've fired about 200 rounds through it without a hiccup, just the leading.
Is this something that might go away with use, or should we be looking at our chamber profile?
Any ideas???????