I had a 270 built for my friend and his family. He has 4 daughters and 1 son. The HS Precision stock was shortened an inch and a pachmyer pad was installed. The load is 130 gr Barnes TSX and H4831SC powder. The trigger is 2 pounds. Adam's wife, 2 oldest daughters, and some cousins all use this 270. No flinching, no problems with recoil. Youngest daughter to use it was 11 at the time, she's petite. So, IMO, forget the 243! Start with a good long action! What do you think?
All killed with the same 270 and load. Not bad I'd say.