I have read a lot of threads on nickel vs. brass, but did not find any that addressed any pressure variances. I'm shooting 7RM 168gr Berger VLD, 62gr. IMR4831 (62gr. may not seem too hot for this load, but I am shooting right up against the lands which puts the pressure close to max). With my nickel plated R&P Brass I am getting slightly cratered primers, but with regular R&P Brass I am not. Does this mean that the harder nickel plated brass can cause higher pressures. Also, my velocity from shot to shot is a little more stable with the regular brass. Any thoughts on what is going on here?