I have good luck with Imr powders. Four IMR powders that worth having, meaning they cover a good range of caibers are 4350/4831/4064 & 4198 I have used 4350 and in 338win,300 win mag & 25-06, 4831 in my 7mmrem mag, 4064 in 30-06, 35 whelen & 243win. 4198 in 222rem.Take those four powder's and add RL-22,19,15 & 7, along with H4831sc,H322 and Norma MRP. If I can't get 90 % of rifle's to shoot with those powders, it's not going to shoot.