HELP! Difference between .451 and .452 dia bullets

[Desert Dude]

For me it's simple. Use bullets with a .451 dia. My reloads are the same OAL as factory FJHP's so I don't think it's a seating problem. I shoot very little lead in the auto loaders so going to FMJ for plinking isn't going to hurt me at all.

Nice thing about these forums is you do get many good answers.

[hill billy]

Most .452 bullets I have checked are actually .453 to .455. Most .451 bullets are .451 to .447.

[diginit]

Factory OAL??? You should work up some dummy loads at different OAL's to check your chamber with every type bullet you reload. The 45 ACP seats off the case neck. If your OAL is too long, Depending on shape of the nose, The bullet will hit the lands and not chamber. I doubt extra diameter of .001 has anything to do with it. Sounds like OAL to me....

[J-cat]

Most .452 bullets I have checked are actually .453 to .455. Most .451 bullets are .451 to .447.

Most .452" bullets I have checked measure .4525" or thereabouts.