I bought some of the Z-Max last year to take pdogin'. Shot them out of my 243AI. Just as accurate as the V-Max and blew up Pdogs nice. Tried them again here in December and shot some V's first and got scope re-zeroed. Then shot some of the Z's. All things in the loads were equal, right down to powder and primers being out of the same lots and loaded at the same time. The group sizes were nearly identical, but POI was a bit higher than the V's. Maybe 3/8's of an inch @ 100. Horizontal was same for me. With all the scope adjustments in the field, and the major elevational difference between CO and home I guess I didn't notice in the pdog towns.