Actually Cam the 375 Ruger has quite a bit more powder capacity than the old H&H, the 300 WM case has more capacity by a fair amount and the Ruger improves on that by a good bit. It should be a good cartridge with virtually the same capacity as the 375 Wby. I'll wring the sh!t out of it and let you know just exactly what it is capable of !!!! With some good hard W-W brass loaded till I see those little bright circles in the headstamp.....LOL
As far as feeding goes any decent rifle worker can make a case that shape feed like silk...............
As far as feeding goes any decent rifle worker can make a case that shape feed like silk...............