After I got my 270 back in the late 70's, I read an O'Connor article where he gave 60 grains of H4831 as his load for the 270 with 130 grain bullets. That's where I started out, and what I still use today.
By the way, I remember an article on the 7X57 by Jim Carmichael where he gave his favorite load for it. It was 51 grains of IMR4350 with a 140 grain bullet. That is way more powder than the manuals show today. Those guys must have believed in living dangerously. But, I have loaded and shot Carmichael's load in my 7X57, and it didn't show any signs of pressure.
Last edited by JamesJr; 12/20/17.
