Home Forums Reloading Big Game Rifles 375 H-H Load Info Needed

Wanting to know if there is one powder out there that is used more than others , performs better , and the most popular , for use with a 300 gr. bullet . I am just working on a new Win. 70 purchase . And would like to limit my powder purchases . Any load info would be a great help . Thanks

Re-19 or W760/H414

RL-15 gets a lot of mention.

DF

I'll second Re15 for 270 - 300 gr bullets

Another vote for H414

In the two .375s I load for, WW-760 gives the best performance (accuracy at top velocity) with 300 gr Partitions, A-Frames, and Hornady solids. Almost as good is Norma 204/Re-19.

In my hands, Re-15 burns too fast for the 300 gr bullets....accuracy is acceptable, but velocity falls a bit short. That said, Re-15 really shines when you drop down to 235-270 gr bullets.

Kudu1,

If you plan to use your .375 for a wide variety of hunting then you might consider a more temperature-resistant powder than most mentioned so far. I've used my .375's at temperatures from below zero in North America to close to 100 in Africa, and for that purpose H4350 is hard to beat with 300-grain bullets, though even old IMR4350 also works pretty darn well in that specific application. In my Mark X Mauser IMR4350 with 300-grain bullets only varies about 40 fps from hot to very cold weather.

I've used a variety of powders in the H&H. It is one of the easiest cartridges to load for IME. I always come back to RL15.

While not an Extreme powder, IIRC, RL-15 wasn't that bad regarding temp sensitivity, at least the latest version.

For those of us who don't hunt in extremely cold climates, that's probably less critical than for those who do.

DF

Alliant's Reloader 15 is THE powder for 375 H&H.

I'm stuck on Varget.

I use H-4350 & IMR-4350 in my .375 H&H's,with both 260 gr NP and 300 gr Sierra BTSP.

Thanks Guys for all your input , it has helped a bunch , Thank Again .

What part of New Mexico you from,Kudu1?

Northern Los Alamos

Dang,3-4 hours North of me.

Do you ever come down to Las Cruces?

Couple times a year .

Well,next time you are coming down to Las Cruces,let me know and we can meet somewhere.

Varget makes me happy just looking at it.