Ruger and Kimber have already hedged their bets on those packages.
Did someone mention the 264 cal. Hawkeye on the 375 Ruger case, spun 1-8? It might even be a 7mm. The .277 caliber is right where it will always be, in a 270 Winchester.
A SA/ "lighter recoiling" 277 has no market, period.
