Re: 300 Weatherby Mag. vs. 300 Ultra Mag. vs. 300 WSM
With the advent of newer slower burning powders, the 300 win, 300 wby and 300 rum really aren't that far apart with the slight edge going to the 300 rum with very heavy bullets. That being said, I have a rum that is a semi custom gun with a factory tube and it is very easy to load for and easy to shoot. It is my little gun and usually gets the call for antelope, but my 338 rum is my go to gun and the 300 rum is my backup.
Remington model 700 300 RUM LH 26" rem ss/blued receiver lam stock 215 Berger @3070/180 NAB @3300
Remington model 700 338 RUM LH 26" Bartlein 5C #4 Muscle Brake, blueprinted action, sako extractor, jewell trigger, bell and carlson Alaskan stock
Savage LH 22-250