Mines 1/4 I got that work fine 1/4 with 3 or 4 different bullets OK OK OK It was only acting strangely with one bullet sabot combination. Guns FINE, SCOPES FINE only that one bullet sabot combination. SabotLoader explained it the best it's possible to have a certain sabot with a certain powder and bullet to act strange. Thats what happened. It was verified by 2 DNR Range officers and myself 27 years Army retiree. All other bullets work fine zero with 1/4 click adjustments Just not the 240 XTP green SABOT It's repeatable it zeros (just different) All bullets group fine once zeroed. Gun is a TC Encore with a pretty tight bore.I'm shooting 300grain SST for hunting season so not an issue. BTW It's a great scope