[JimL]

Assume .45 ACP. If you had been shooting with and loading for a 5 inch barrel and you changed to a 4 inch barrel (all other things remaining equal) what changes would need to be made in loading?

Thanks a million

JimL

 

[Whirlwind06]

No changes at all.
I have shot the same reloads from my Ruger P89 (4 1/2 inch barrel) and Kel-tec p11 (3 inch barrel)

 

[NativeTexan]

Not much to change. It already uses a fast powder which means also that losing a little barrel length isn't gonna hurt it like it would a magnum revolver or something.