Yes I hear you on your ideas for the 338 AM.
I am thinking a 375 version will be even better for a HTIR but that will depend on bullet availability, I have been pestering Richard for some 410 to 425 gr ULD RBBTs for this round. I think it would make the 408 CT look silly with nearly the same weight bullets.
From my figuring top velocity would be similiar with the larger caliber bullet compared to the 338 AM, sectional density would be identical for all realistic purposed (.438(338) vs .432(375)) and BC predictions are basically identical at 0.950 for the 338 and 0.94 for the 375. Only difference is we would be looking at nearly 9700 ft/lbs of energy for the 375 and right at 8000 ft/lbs for the 338.
Momentum would favor heavier pill as well.
Only issue will be increased recoil in a portable rifle design. We will have to see how that goes.
Here is a pic of the 375 AM compared to the 338 AM, kind of silly looking with the 260 gr Ballistic Tip but I bet she would be FAST!!!! This would be my pronghorn load [img]/ubbthreads/images/graemlins/grin.gif[/img]!!!