Well I slugged my barrel and it measured out at .355. What size bullets can I safely shoot? .356? .357? Reason I'm asking is I have some .357 jacketed bullets. Will they be ok?
LOL, the first time i slugged a barrel i forgot to oil it and that slug almost never came out the other end!And let me say it wasn't easy. I bought a dowl rod that was too big, it look as if it would fit. So then I stole one of my ol lady's plastic hangers. That fit good. And finally I got it sized out. Thanks all for the help on that.
Best way is to use cast lead bullets, unlubed. and put 600 or 800 grit lapping compound in the grease groove just prior to seating. Use a light charge of powder and clean thoroughly after each shot. Using the lapping compound gets very messy.Great going, AR Guy! Sound advice - .355 jacketed bullets and start with .356 for the cast lead bullets, maybe even go to .357 diameter, but that's about tops for a .355 bore. Besides, after that you start overcrowding the cartridge case mouth/pistol's chamber and fooling with increased chamber pressures. Not a good thing.
Not to hijack this thread, but JLA mentioned 'firelapping'. I've got two OLD German military 9mms and both have bores a LITTLE frosty. Both saw lots of corrosive ammo and dirty shooting conditions. Can't use lead bullets with them because the roughness catches bunches of lead. I'm thinking about firelapping them (I did that with an old WW1 .303 Enfield and it helped by at least 75%!), wondering if anyone can point me at a source for the 9mm firelap bullets. Thanks - Jim