If the bullets say 45colt do not use them for 45acp even though they are .451-2. The problem is 45 colt bullets have a different ogive (rounded part of the bullet) that can be over long for the 45acp chamber and are often much heavier in the 250-255 grain range.
Bullets marked 45 colt 200grains and lighter should be fine for use in a 45acp
Lead bullets work great in 45acp. The cartridge was the evolution of the 45colt and schofield and originally designed to use lead unjacketed bullets
"Gun control: The theory that a woman found dead in an alley, raped and strangled with her panty hose, is somehow morally superior to a woman explaining to police how her attacker got that fatal bullet wound." — L. Neil Smith
Last edited by JonM; 02-18-2013 at 12:00 PM.