I don't think firing a .311 bullet in a .308 barrel will actually do anything (a couple of times), but you might eventually run into problems with overpressure and excessive fouling.
Firing a .308 bullet in a .311 barrel will not do anything (extra blow-by, lower pressure), but accuracy will most likely be atrocious.
Firing a .308 bullet in a .311 barrel will not do anything (extra blow-by, lower pressure), but accuracy will most likely be atrocious.
Upvote
0