tote at least in theory equal bullet weights with similar shapes and driven at similar velocities SHOULD perform quite similarly. The fact that you are shooting what typically is a very accurate round just makes it that much more likely. I have a custom 280 700 that doesnt know the difference between Federal Premium 140 Trophy Bondeds and Hornady Light Mag 139 SSTs. The light mags are supposed to be as much as 150fps faster than standard loads (my gun has a 24" barrel also) but it doesnt show it. I also think that much of Federal Premium ammo has always been " hot" . Two different loads, similar bullets (under 300yds anyway) different powder loads (so Hornady says anyway) and yet the gun will put each of them together in a nickle at 100yds.
At least its a " positive" problem!

RA