Hi guys,

I know this should probably go in the reloading forum but I need some guidance on load data for the above.

I'm heading out in 4 days unexpectedly and promised a friend I would bring him some loads for his 375.

Any help would be appreciated as all the data I have is for up to the 300gr option.

Barnes data ought to work just fine, if available. (Found some for 350-gr Barnes original and 4350 or 3100 which is close to IMR 4831.) Or SWIFT A-frame data, since that stuff is also longer than usual like the RHINO's. Extrapolated from my own results with RHINO monometals and softs, I'd suggest H414 / W760 starting at 70 grains (work up). I couldn't get enough IMR 4350 or the 4831's in the case for my .375 Wby to make them work for me. Doubt a .375 H&H will hold enough either.

Alternatively, NORMA used to load RHINO's and had some European based data online. Hope this helps you.