Zayne and I are in the mists of using RL 33 with a 190 matrix in a 7 Rum. This is Zayne's rifle and he is doing all the shooting. We have done some testing already and are very miffed with the results. Wonderful accuracy but the charges are astronomical. No pressure yet and we are up to 102 grains. Cases still coming out dirty and small dimpling below the shoulder. I am wondering if the cases are too hard and need to be annealed. Also, Riley (barnesuser) thought dropping the charge and seating them into the lands .005 would help. I want to see if quick load can spit out a charge range and then compare it to the charge range we are at. If it's not too much trouble, I would like one for retumbo as well. COAL is 3.980. Thank you for considering this favor.