In my model 70 pre 64 I used 43.5 gr of IMR4350 with 115gr Nosler partitions, this produced 2925 FPS. Now I use RL23 with 47.5 gr of powder same billet at 3125 FPS. MRP gave about the same velocity. RL 26 gave 3133 FPS but might go a little more.
How about accuracy with those four loads?
DF
