The longer I own it, the more that I grow to appreciate the .257 Rbts. I originally started with factory ammo with the 117 or 120 gr. loads and that killed deer with little fuss. I then started handloading and found that the 100 gr. Hornady kills deer pretty darn well also. Now I tend to use 100 gr. for "regular" hunting and 115 gr. Partitions for "big deer"! Probably not a lick of difference, but gives me an excuse to do some loading!