I've probably owned three dozen 7x57s over the years, mostly bolt actions with a couple of combination guns and a semi-auto FN49 thrown into the mix. My favorite factory built 7x57s have been the Remington 700 Mountain Rifles, the Ruger 77 RSI, and the Winchester/USRA 70 Featherweights. Since I'm not a double barrel shotgun guy, drillings have never interested me.
