I would have suggested slower powders

by bj , Wednesday, January 25, 2012, 21:40 (4685 days ago) @ Slow Hand

It struck me that this cartridge is somewhat similar to what I had loaded at one time in .30 Herrett. The .300Wh case is a bit smaller than .30H, but I was loading 165 grain bullets for silhouette and some people loaded even heavier bullets. I started using powders slower than LilGun, and later moved to even slower powders. My best results were with WW748 which is a lot slower than LilGun. But now that I think about it, if a person was going to use .300Wh for its intended purpose of use with a can, then faster powders might be more appropriate- by reducing pressure at the muzzle and thus muzzle blast, wouldn't it make the can more efficient?