Going by hodgdons online data for Tightgroup, I find I must seat bullets .100 deeper to get the case mouth to the crimp groove. That's a lot less space in the case. Data says 3.2-3.8grs with a coal 1.475. Thoughts? Will I increase pressure too much by seating to groove? I had charged the cases with 3.4gr but I may dump and go 3.2.