I've got one 300 win mag that just likes H4831 powder, no matter the bullet. I've used 180 gr Accubonds in the past and I now shoot 190 gr Berger's in it. I won't tell you my charge because it's several grains more than max loads in the guides, but it works without pressure issues in this gun. Other powders, R22, H1000 and a couple others I've tried have not had the same accuracy in this gun.

My other 300 win mag I load a 180 gr Sierra GK over 71 gr of IMR 4350. Just a little over 3000 FPS.

R22, R23, IMR7977, H1000 would be a good starting point with the 200 gr bullets IMO.


Dying ain't much of a living boy...Josey Wales

Molon Labe