For a rifle with a groove diameter of .310" what size fmj bullet diameter should I use ? :o
M mm1ut1 Member Joined Sep 28, 2008 Messages 256 Location wi May 24, 2010 #1 For a rifle with a groove diameter of .310" what size fmj bullet diameter should I use ?
Walkalong Moderator Staff member Joined Nov 20, 2006 Messages 78,384 Location Alabama May 24, 2010 #2 .308 to .311 will work just fine by most accounts, but I will wait for the experts in that area to chime in. Krochus has done a lot of work in that area.
.308 to .311 will work just fine by most accounts, but I will wait for the experts in that area to chime in. Krochus has done a lot of work in that area.
L Lee Roder Member Joined Jul 15, 2009 Messages 510 Location AZ May 24, 2010 #3 WAG here Wouldn't it depend on the bullet profile? Would a boat tail obturate to the same extent as a flat base?
WAG here Wouldn't it depend on the bullet profile? Would a boat tail obturate to the same extent as a flat base?
