I haven't shot any 257 Roberts factory ammo for probably going on 30 years now, just reloads in the 75 to 120 grain range, and within that range mostly 75 grain Sierra HPs for predators and 90 grain Sierra BTHPs for whitetails.
Although I have some nice rifles chambered in 257 Roberts, including a light small ring Mexican Mauser that used to reside at the home of some guy in Townsend, MT, and I keep building them, I haven't shot the 257 much since I switched over to the unloved and unappreciated 25 WSSM in 2004.
