Thanks Guy, you bet, standard H&H, I took the old H&H to max power more than 20 years ago, used IMR-4350 and W-W 760 powders to power the 300 gr BTSP's from Hornady and Sierra to 2700 fps in a Browning Safari 375 H&H, accuracy was great and brass lasted forever, that rifle is another I regret selling.
The 300 gr Partition will have a bit longer bearing surface than the BTSP's so I use RL-17, it's a bit slower burning, 81 grs in 'my rfle' is perfectly safe with both the NPT and BBW solid, that old cartridge will still certainly carry the mail so loaded ;]
My 375 AI [rube goldberg] will run the 300 gr solids to 2900 fps and the 270 TSX's to 3100 if you want to lean on it that hard, I load the 270's to an even 3K and the solids to a very easy 2700 now.
