My 7x57 is an Obendorf M98 that I had Douglas put a 26" barrel on, then stocked with a light weight Fajen stock and put NECG iron sights on. I use the 160gr HotCore fueled by either W760 or H414. So far three shots for two whitetail deer, that bullet is very accurate from my rifle but you still need to aim for the right part of the deer. The two well aimed bullets worked perfectly

My rifle also likes the Barnes 160gr TSX, but I haven't shot anything with that load (yet). I think the 7x57 doesn't need a premium bullet unless you're after something really big.