So the cylinder on a 1917 is long enough to be reamed for a 45 Colt and not have the bullet hanging out the front of the cylinder tying things up? Is that a common modification? How would it affect shooting 45ACP rounds? The difference in case length from .898" (acp case length) to 1.285" (45 Colt case length) leaves a nearly .4" gap for the bullet to jump - which seems like a lot to me.