I have 20 brand new Norma cases, that I cannot prime. This is a new one on me. I cannot exert enough pressure with a RCBS Rockchucker press to seat a primer. Didn't want to pay the price for 100 Lapua cases until I am sure this rifle will shoot. Plus I counldn't locate the Lapua cases. Norma brass can be bought 20 at a time. Actually the Norma brass was hard to find. Got it from Huntington, $47.96 for 20 cases. Anybody have a similiar experience???