Contenders suck. You all should send me your worthless junk and move on to something useful. I have tried to make them shoot for decades and failed.
Take for example, the .30-30 barrel from Fox Ridge @ 100 yards:
Or the .22 short barrel, also from Fox Ridge at 25 yards:
Or the worthless Sneezer barrel from Bullberry @ 50 yds...yesterday:
Worse yet it the .22 LR barrel from Bullberry @ 50 yds a week back, 10 shots per target:
The dang things just simply can't make a symmetrical group. Nope, they are always a bit ragged one way or the other, and sometimes the holes don't even touch. Pure trash I say. About the only thing they are good for....