Something I have been pondering over and would appreciate insight...
I have a recently acquired Sako 75 in .243. I put a new scope on it at the weekend, and went to zero it. 90gr Sako ammunition.
Started at 30m, just to get it on paper. Got it shooting about half an inch high at 30m.
Moved it to 100m. It was now shooting about 7 inches high. This really surprised me. Would you expect this?
I zeroed it down to an inch high at 100m.
Out of curiosity, I moved the target forward again to 30m. Now shooting about dead on (an inch below where it had been to start with).
I thought I understood trajectories, but this really confused me.