Originally Posted By: Paul Harm
I'm surprised that after three pages no one said not to remove metal where it's most needed. I may be wrong, but believe Sherman Bell did some testing and found pressure only went up about 500psi when shooting 2 3/4 in a 2 1/2" 12ga. Because I reload at lower pressures I've never worried about chamber lengths. The OP never came back and said if he reloads.


The pressure increase depended on the specific load. Although most were under 1,000 psi, a couple were pretty close and one exceeded 1,000 psi. Certainly doable to compensate for those increases, especially in 12ga.