Thanks Grenadier - cool round for sure. I do like the idea of a .411" or .416" 300gr. for a lever gun for hunting in NA.

Buddy of mine has a stainless Marlin with 18 1/2" bl. In it, a load of 49.0gr. Re#7 with a Barnes Old Style 400FN runs 2,004 fps my chronograph, 2,007fps his machine. That's almost 200fps faster than Speer had that load running with their bullet from their test 22" bl. in book #13, maybe 11 and 12 as well. This data, according to Speer, runs 28,000cup. Obviously Gordy's rifle runs higher than that, but absolutely no adverse pressure signs occurred with it. The maximum for that rifle is listed at 43,000cup.

My new Marlin 1895 22" has shown it is not as accurate as I'd hoped it would be. I will keep your round in mind for a re-barrel. I also have a .450 Alaskan reamer that could be used for a new .45 bl.