Whats your favorite powders and loads for 300gr. bullets in 375 H&H (especially Noslers) Thanks rws2

Easy.... IMR 4064, IMR 4895, IMR 4320, AA 2700

Slow powders like 4350 and 4831 take up too much room.

Hodgdon 4350. Go to the Hodgdon loading manual and get their loads for the .375 H&H, using H4350. I use Winchester brass and Winchester regular (WLR) primers, not magnum ones for this cartridge. I crimp the bullets using the Lee Factory Crimp die.



It's true that their max load is heavily compressed. But so what? In my rifle these max loads with either 270 or 300 grain bullets give both excellent velocity -- as much as 100 f.p.s. or even more over the usual published max. velocities for this cartridge -- and excellent accuracy, usually under a minute of angle. And there are no signs of being over-pressure.

Re 15, IMR 4350, Varget work best in my 375. Some prefer win 760. Try the ones that have been mentioned that you already have, you will find one that works fine if I don't miss my guess. Good hunting. "D"

I have been using RL-19

Many here use RL-15, but I found I got high pressures from it long before I should have in my gun, so I went slower.

IMR 4350 works well, too.

I mainly use R15 or IMR4350. Here are a couple of my 'plinking loads" (distances are 100 yrds)

-Steve



Load Name: Pinking load Winchester FMJ:
Caliber: .375
Bullet Weight: 300 grns
Mfg: Hornady #3727
Type: FMJRN
Powder Mfg: Alliant
Type: Reloder 15
Weight:69 grns
Velocity: 2537 fps
Group: 1.031 in

Load Name: 375 H&H Plinking Load (300 gn):
Caliber: .375
Bullet Weight: 300 grns
Mfg: Hornady #3720
Type: RN
Powder Mfg: IMR
Type: 4350
Weight:71 grns
Velocity: 2750 fps
Group: 2.243 in

I use IMR 4064 in my 375 H&H AI behind the 375/272 EXP Groove Bullet and the 265 MI Groove Bullet.

Don