This isthe 3rd season with my T/C Black Diamond and I haven't been able to get it sighted in this year. I have yet to take a shot at a deer, however, the last two years had no problem getting it sighted in at 100 yards. This year, however, is a different story. I've been to the range 5 times with it this year and have given up. I had the local shop check out my scope and had it re-bore sighted just to be sure. I can't even get it to shoot consistent patterns at 50 yards. One shot will be dead on and the next can be as far off as 8-10 inches. I did switch from Shockwaves to PowerBelts this year. When the problems started I switched back and it didn't help. I swab the barrel after everyshot and run a bore butter patch down as well. Should I not be applying the bore butter? This is what I have always done. I'm ready to totally give up and by an Omego! Any suggestions?