The 7X57 will do all a 270 will, and maybe just a tad more, as one can shoot 173-175gr bullets in the 7X57. I have had many combo guns in 7X57R, a somewhat milder loading, and have two in 7X57 presently. One of my favorite rifles is a TACK-DRIVIN SOB!!
It is a Husqvarna HVA , re-chambered fron 7X57 to 7X57 Ackley. It is a "Wonder Rifle" and shoots through the same hole, shot after shot.
I never would have bought this rifle, had it not been for a friend who owns a pawn shop offering it to me at a steal price. I got it for 2 "C" notes, out the door, Brady, tax, and all. :shock: But it got better. The gun was scoped with a 3X9 Leupold in Redfield Jr mounts. I couldn't turn it down, needless to say. :wink: I had a Win Mdl 70 XTR FW that had been re-chambered by Vern Juenke from 7X57 to 7X57 ICL Tortilla...same as the Ackley, but with a 45 degree shoulder, instead of the 40 in the Ackley. I used this set to neck size some factory 7X57 ammo I fire-formed and made up a load similar to that in the ICL. I shot a 100 yard 5 shot group that measured right at 3/4", and that was over the hood of the truck on pillows.
There isn't one variety of 7X57 or "cat" that I don't like, and I have killed some pretty big critters with the 7X57 Akl, including a 2,100 pound eland.