CMMG .22LR Conversion - Windage Accuracy Issues

[mutt]

There's is a definate POA/POI difference between .22lr and .223/5.56. My .22lr coversion bolts would shoot about an inch to the left and low at 25 yards. At 50 yards the shift was about 3 inches and the group sizes were terrible. This is one of the reasons I switched to a dedicated .22lr upper. Using a proper .22lr barrel greatly improves accuracy and there's no need to compensate for POA/POI shift between 2 calibers.

The 6 inch shift you're getting sounds a bit extreme but then again every barrel is different. If you can get a proper zero @ 100 yards, and a good 10 shot grouping (3 inches or better) with .223/5.56 then I'd say your rifle is ok. One thing to check is the chamber adapter on the conversion bolt. Maybe it has some kind of imperfection that is causing aligment problems.