Jack O'Connor was the poster boy for the .270 back in the day. I believe his "pet" load was 49 grains of 4064 under a 130 grain bullet. But my memory ain't that great. That, I believe, was the load he found to be most accurate in a 24" barrel. I think his hunting loads were at times hotter and heavier. I recommend his book "Complete Book of Rifles and Shotguns" if you are a gun guy. You can get a used copy off Amazon for around three bucks.