...........all things being equal, using open sighted milsurps, with powder charge weights being the only variable, I usually see the slower loads impacting higher than the faster loads. This is when firing at 100 yards for group size comparisons. I see different things going on when I back out to 250yds.(range max) Keep this in mind, if the rifle recoils in the slightest, which I would assume all do, then you are getting some barrel movement. If you are shooting off a front rest the rifle usually has no where to go but rearward and up.
Dale