Guys am experimenting with North Fork 375HH 300 grain loads (PP and regular soft) for a Zim hunt next May. Got the NF recommended load using 74 grains (min) of RL-17 clocking around 2600fps. Wondering if anyone else has experimented with alternative powders. Any feedback welcome.

I worked up to 70.5 gr rl 15 with the 300 NF in my rifle with fed 215 primer. Shot great but my ph recommended the 300 woodleigh but the NF should do the job

My M70 loves IMR4350 behind 300gr TSX, A-Frames and NF bonded cores. I'm away from home now so I don't have my notes or manuals. If I recall correctly my best load with the NF was at 77gr. But I'd advise getting info on the Barnes TSX and start at the low end and work up.

I'll be home on Tuesday and be able to give you better info then.

My M70 loves 70gr RL15, about 2550. Drop back a grain with the FPS or CPS, same velocity.
I got these loads from North Fork.