I have a vz-24 czech mauser I built into a 257 AI. I love it!
I like to keep guns and caliber within the same families. No reason other than i like it that way. A Savage 99 should have a 300 Savage or 250-3000, a remington rifle should have a remington caliber, 260 Rem. and so on. I was building a mauser that started out as an 8x57, the same case as a 257 Roberts, so it was a natural fit, same bolt face and cartridge length same brass, just different bullet diameter.
The 257 has very little recoil, even in the light little youth sized rifle I built. It makes me wonder why I was a magnum guy in the past! I use 100 gr Barnes TSX with excellent results on deer and elk.