Revolver bullets have a crimp groove or cannelure so you can roll-crimp them.
Auto-pistol bullets are smooth with no place to roll-crimp, so you taper-crimp them.
not a green horn at reloading ,but now a green horn at 45colt.looking at bullets I c .451 and.452 dia for the 45 long colt.how do I know what bullet to get.
As a general rule, just as in your 45 Auto when you load a jacketed bullet you use a .451" bullet and when loading lead it's a .452" bullet, the same holds true with the .45 Colt. Of course I'm talking about modern revolver like you bought, the older Colts can require .454" bullets or wider.not a green horn at reloading ,but now a green horn at 45colt.looking at bullets I c .451 and.452 dia for the 45 long colt.how do I know what bullet to get.
BTW, there is no such thing as a 45 "Long" Colt. The 45 S&W/45 Schofield was nicknamed the 45 Short Colt but there was never a 45 Long Colt, just the .45 Colt... (not being a jerk, just giving the facts)
As a general rule, just as in your 45 Auto when you load a jacketed bullet you use a .451" bullet and when loading lead it's a .452" bullet, the same holds true with the .45 Colt. Of course I'm talking about modern revolver like you bought, the older Colts can require .454" bullets or wider.
Do I have to taper crimp this load and why?