Lane, to my understanding... the .45acp feeds on the case, not on the OAL. OAL ( or COAL for Cartridge Overall Length) is dependent upon the bullet used. The traditional FMJ 230 gr. round nose would have an overall length of 1.260. If you were loading a JHP in 230 gr.... my manuals look for a tested COAL of 1.20 (because the top of the bullet is flattened out) Same for the 200 gr. Flat point. A deeper set bullet will increase the internal pressures, but OAL is based on the physical length of the bullet, as well as the depth set.
So.... if you were to set a 230 gr. FMJ round nose to a COAL of 1.20, I would guess you would be exposing yourself to a abnormally high internal pressure (read: Possible Kaboom!!)
Once again, I say: The loading manuals are there for a reason. Do not deviate from the mins and max's..... and watch your COAL.
Da
