Back in the early 1970 our local hardware store ended up with a dozen boxes of Winchester 117 grain RN .257 Roberts ammo (someone had miss-ordered). It sat on the shelves for a couple years not selling any. The owner told me he would sell them for $2.50 a box just to get rid of them. I didn't even have a .257 at the time but knew I would so...I bought them all. I found a used 722 Rem in .257 and it shot these factory loads at 1/2" and less at 100 yards. (I'm still using the brass to this day.)