I just bought a new cz550 375 H&H. I bought winchester brass and nossler partions 300 grain. I am going to RSA in october. What powder and load are most of you using?

http://stevespages.com/375hh.html

or...

you can go to:

http://stevespages.com/375_1_300.html

and pick your own...

Reloader 15

W760

What Shumba said.
H4895 for little loads.

Try also the reloading pages at this site.
I have develloped a load with VV N 550.
The recipe: RWS cases, Federal 215 LR Mag primers.
Bullet: 325 Grain RN heavy jacket CBS Degol.
75.5 Gr. N 550
Oal=91.5 mm.
V = ~780 m/sec.(2550 f/ps)
No pressure sings, at least in my rifle, CZ 602.

Hugh.

ok, SOCAL, here's my double-secret probation load: Winchester brass, Fed 215 primers and 76gr of H-414. MV: 2550 fps SD: 5! fps. nice 3/8" cloverleafs out of an unmodified Model 70. Let me know how it turns out. jorge

I use RL-15 and still like my old favorite IMR-4064, it is just so bloody accruate.