Biggest difference is smalle primer. Most creed rifle are set for large primer
Thanks Cleric, this I know. I'm just wondering about pressure differences and MV differences if someone has switched brass.
I'm shooting H-4350 with 42.0 grains using Berger 140s with CCI primers running 2750 fps out of Hornady brass out of my Custom 6.5 CM w/27" barrel. I've ordered another lighter 6.5 CM for hunting with a 21 inch barrel and I'm going to be using Lapua brass, CCI 450 primers, A-Max 140s with H-4350 powder.
I have 500 A-Max so I'm going to shoot them first and then most likely will go with 143 ELDs.