firstcoueswas80,
After reading the first page of post, I see you are not getting any serious posts. Let me change that.
I put one one my grandson's .22. with each 1/8" more of the donut the gourps shrunk at fifty yards.
Since that worked, I put one on a box stock good shooting .223 Savage and turned it into a reat shooting Savage. The last three times to the range the groups were about 1 1/16" at
300 yards!.
