Well I never go by them #'s anyway. You can take two identical rifles, same brand, cal, etc. Shoot the same ammo and 1 will shoot better ballistics, accuracy, and distance than the other. I always try to find what bullets each of my gun likes to eat and sight it in for the distance I think I ought to be able to shoot it. Which in some cases, has a different "zero" than whats on them boxes. The 300 should be a great round as well! I am just suprised to have the results on the game that I have taken with this little round!