The Remington Ultramagnum case seems to have a lot of potential. So far Remington has made this in 7mm, .30, .338. and .375 calibers. The 7mm has lots of velocity but I bet barrel life is pretty short. Have there been any wildcatters who've used this case for 8mm or .358 caliber bullets? If so what kind of powders were you using and what kind of velocities were you getting? I suspect barrel life would be longer than the smaller calibers.