.45 Diameter: .452" v .451"
Besides the .001" difference in diameter, what's the difference, pros/cons to using one size or the other in a .45 ACP? Berry bullets are .452" and every other projectile and commercially available round for the .45 is .451." I read Berry is widely used in IDPA, but cannot find any other manufacturer that makes/sells .452" bullets for use in a .45 ACP (only for .45 Colt).
I ask as I had a bad experience with an over-sized reloaded projectile. Thanks!
Not much difference in everyday use
I've shot both sizes in several 45s over the years. Both give more than adequate results. I suppose if I did some very serious testing, a couple of my target guns (all Colt Government models; one wadcutter and two hardball guns) might show a preference, but they all shoot the wadcutter and hardball duplication ammo I make with 'whatever' 200 grain lead semi-wadcutters and 230grain round nose - respectively - better than I can hold on a given day.
The only potential problems one might have is a seriously oversized bullet and cases with very thick case walls. It's possible to load a round that will not chamber due to that combination. However, at normal .45 ACP load levels, that extra .001 inch is not going to push pressure over the limit. If it does, that load with a smaller bullet is going to be over pressure as well.