Intriguing. I did have it zeroed dead-on for 100 yards. It's that last 25 yards beyond that I need to figure out. It appears that the 335-grain lead ball is perfectly centered in the bullseye at 100 yards, and then drops like a cinder block a couple yards beyond that distance.
To get that 100 yard zero you are sending the ball on a higher trajectory (max ord) which robs it of some velocity, but also puts it on a more downward angle of flight as it hits the 100 yard target. A closer zero would give you a flatter trajectory.
But, .62’s all drop like a stone past 100 or so. Not the best choice for long range shooting.