My 257 Roberts model 70 shoots the 115gr nosler partitions better than any other bullet. The load that came with the used rifle was 43.5gr of IMR 4350 at about 2925 FPS killed half dozen Antelopes with
That load. I got 3130 FPS using RL26, RL23 with 110gr Accubonds gave 3120 with 7.8 SD Win cases, CCI250 Primers OAL was 2.840. RL23 with 115gr Nosler Partitions and CCI primers R/P case
got 3129 FPS SD was 14.5. I also used MRP with the 115gr Bullets it has about the same speed as the RL23, don,t have it in front of me right now. I highly recommend the 115gr Nosler Partitions.
