I'm certainly not advocating hot-rodding your load. But generally speaking, a slower moving bullet will himpact higher at close range than a faster bullet. This is because upon firing, recoil brings the muzzle up. A slower moving bullet takes longer to exit the muzzle. When it does exit, the muzzle is higher up, thus raising the point of impact at close range. Conversly, a fast moving bullet will exit the muzzle sooner, before the muzzle gets as high as it did when the slower bullet exited. Thus it's impact point is lower.