koivu,
I've got several 7x57s, the round is an oldie and a goodie!
it compares very favorably with the classic deer rounds, the .270 win, the 280 rem, the .30/06, and the 7mm08/.308 class cartridges.
I handload a speer 130gr spitzer for mule deer in a winchester mod 70 featherwieght, it has always been a good preformer for me.
Try it you'll like it.