Re: Best .277 cal cartridge?
I have shot the 270 wby extensively for about 35 years. My longest shot with it was an elk back in the 70's at over 1100 yards. I like 7828, magpro, retumbo with heavy bullets, RE-25, all do very well with it. Basically top velocity with extreme accuracy are as follows. 130 grain bullets-3500-3550 fps, 140 grain bullets 3400-3450 fps, 150 grain bullets 3300-3350 fps. All three of mine have 1-10 twists.
I have chronographed quite a few 270 WSM's, mostly when I had my shop and range, but do not own one. All that I measured hit about exactly half way between the win and wby.
Predictions are difficult, especially when they involve the future