I purchased a Winchester Mdl 70 270 in 1952 and still have it. I have taken pronghorn, mule deer, elk and other unwonted critters around where I live. Back in the 50s and 60s I reloaded 100 and 110 grain bullets on varmints and shot one deer with a Hornady 110 Gr bullet in 1955. In 1956 I got a 222 Rem and stopped using the 270 for varmints. For big game I have used 130, 150,Gr Hornady bullets and one box of 160 Nosler Partition bullets but most shots were with 130 Gr bullets. A few deer shot in the neck were under 100 yards. But most were in the within the 100-300 yard range and all were lung heart area shots . I never felt that much difference in recoil between the 100,110,130,150,and 160 grain bullets. Except for last year and the first year I got the Winchester rifle all I have shot is reloaded ammo. A few years ago I got a used Remington pump 270 Win ,never shot untill last summer when I was given a box of Rem 270 150 grain ammo. The pump gun put three rounds into 1 1/2 inch group shooting at 100 yards. Took the Rem pump out and shot a mule deer in the neck at about 50 yards with the Rem ammo. This fall when I go deer hunting I ll be 75 years old . Over the years I have gotten other brands and caliber big game rifle, but have not killed game any deader than the old 270. I dont see any point in using any bullet under 130 grain for big game in the 270.