Brian.

I have the Chapius UGEX in 30-06 calibre which at the moment is regulated for the 165 grain Woodliegh Protected point. It currently sports a Leopold 2.5-8 vx3. It is a great rifle to use and carry and very comfortable to shoot. I have shot pigs with it and it has shot a few fallow deer by the my mate who previously owned it. I am in the process of buying a Aimpoint micro dot sight for it to replace the scope. The 7x65R is also a great calibre. Rimmed or not IMHO does not make any difference. I got rid of my Browning 9.3x74R to buy the Chapius. The 30-06 is much easier and cheaper to buy cases and projectiles, I can shoot it more and the size game I hunt really does not need $1.00 projectiles.

My suggestions is 30-06 if mainly deer and black bear with an odd moose. I have had no experience with the 8x57.

Wayne