For several years my sister-in-law hunted with a Browning BLR in 257 Roberts. She took many 'lopes, mule deer, and even two elk with it. This lever action rifle proved to be very accurate and hard hitting within reasonable hunting distances. But the rifle was traded away for a new BLR in 7mm-08 and she hunts with it to this day.
The 257 Roberts has faded from popularity along with many other very capable hunting cartridges. Unfair but true. Quarter bores tend to be highly accurate.
Fire up the grill! Deer hunting IS NOT catch and release.