Originally Posted by dig
Got my second .375 H&H up and running. Weatherby action, 26 inch barrel. Looking for a longer range load. Purchased some Sierra 300 Grn Game Kings, anyone with a pet load. I have had great luck with the 270 Grn Barnes X in my "Africa" .375 but want to stretch this one with a higher BC load. Help please
I have gone this route with my 375H+H before I re-chambered to the Weatherby version.
My best loads were found with 2 very different powders; ie: H4350 and Win760. Both powders gave similar velocities with Sierra 300gr SPBT's, around 2600fps AVERAGE VELOCITY.
The H4350 load was 80gr's and the 760 load was with 79gr's. I found 760 to be kinder on my brass, the primer pockets didn't open for more than 10 firings. All loads were in Winchester W-W Super brass with a WLRM primer.
BTW, the best long range bullet I have found in this calibre is the Nosler 260gr Accubond, which I was able to safely get an average velocity of around 2750-2790fps depending on the powder used.
On a side note, the 375Weatherby can achieve 2950fps with this bullet, making it an even better long range venture, mind you the recoil is a bit much from prone, even with a 14lb rifle!
Best of luck with it.