The issue with "groups" is that the first shot is always a freebie as all one shot groups are equal. For a hunting rifle, the first shot is the most important. How close to point of aim a rifle/shooter can place that first shot and how close to point of aim all the subsequent shots hit means more to me than "group size".
I put a new barrel on my AR last week and finally had things dry out enough to fine tune the bipod/no rear bag zero at 100yds shooting the 70gr VLD.
Dots were shot from bottom left to top right. After first 3 shot string scope was adjusted down 1/3 MOA After second 3 shot string scope was adjusted left 1/4 MOA I lost some focus on the middle 2 strings.
While the "group size" of the middle targets was not horrible the high shots stand out and show more of a shooter issue and not a rifle issue.
In other words I think I get more feedback per shot on both my shooting and the rifle by shooting to the point of aim than just shooting a "group" somewhere on the paper.
John: Agreed.
Rhetorical question: Does anyonebother practicing with a rifle that isn't zeroed?