I've owned FN M98s in both 9.3x62mm and 9.3x64mm, as well as a Win pre-64 M70 .375 H&H Mag. I honestly liked the FN 98s better due to them being a bit more compact and having a better fitting stock. I would fully rate the 9.3x64 with the .375, both love to be loaded with 4350/2209 powder. I only got the 9.3x62mm because the recoil is less and brass is cheaper. Now it seams to be my got too rifle. I say do the project, the world needs more 9.3x64s.