I used to use 43.5 gr of IMR 4350 at 2925 FPS or a little more using 117gr Nosler partitions or 115gr Nosler partitions, Those 117gr came with Model 70
when I bought it used. They killed Antelope real well. Have now changed to RL23 with the 115gr Nosler Partitions at about 3100 FPS. Norma MRP works good as well as RL22.
It's claimed they are the same or nearly the same powder. I've read that MRP is a more refined version of RL-22 with less lot to lot variation.
I have a big jug of MRP, Will use up my current supply of RL-22, not getting any more, using RL-23 instead.
DF
