RE: How Can This Be????
Elknut1,
What type of sight are you using on the rifle? I've tried running some numbers to see if anything reasonably matches your results and the closest I could find was with a see through scope mount 2.5" above the bore and 2000fps (higher than I would expect your load to be) which puts you on at 100, -3 at 150 and -9 at 200. It may be that the barrel on that gun shoots the bullet at a strange angle that causes it to do what it does. A friend of mine has one that shoots like a knuckle ball with the projectile flying in a cork screw pattern as it goes down range. Nobody seems to know why it does this but he shot it at several different distances (short intervals) and it had a round pattern around the POA, very strange.