Heck, I'd use the H50bmg in your 30-378 and run the h1000 in your 300 win. The 300 win does rather well with a stout dose of 50bmg type powder (especially ball stuff) and a heavy pill but the case capacity is a bit lacking to get to full pressure with stick powder.Anybody have any good loads using this powder. I was going to use H1000 but i'm running low on powder and I can't find anymore and need that powder for my 30-378. Thanks