Originally Posted by interstate1
purchased a 300 remington ultra mag in febuary and dont know how bad itll be for a mule deer and whitetail for i have aquired both tags. does any one have any experience with this.
Other than perhaps a once of a lifetime grizzly hunt there's nothing in N. America I wouldn't feel comfortable taking out to 1,000 yards with a .300 Rum.
Get out and shoot it and see how accurate it is. Some of the CDL's will shoot very well right out of the box and some will need some accurizing.
Pick two or thre loads with different bullets and see what it shoots best.
If you can consistently shoot 1.5MOA or better then you should have good confidence to at least 600-800yds with the right glass and some practice.