Small rifle primers CCI 450s vs CCI 400s for a 6BR

Colt1776

New Hide Member
Feb 3, 2018
68
8
8
Muskogee, OK
#8
So other than being a few thousands thicker do the 450s put out more energy than the 400s?

Because I have 2k of them and just got a 6br barrel spun up I am running it on an Impact so it has the small firing pin.

Would I get better performance out of the 450s?