Just to put things into perspective, it does not, "... shoots 1/2" groups at 100 yards..." what it does do is, "shoots three shot 1/2" groups at 100 yards". There is a subtle difference. Shoot five shots, letting your rifle cool between shots and you will see the difference.
There are basicly two shooting areans.
Hunting: Seldom more than one shot. Occasionally two. 3+ like I did once you just really hosed it up and only the first two grazed it. Close, no cigar.
I was perfectly happy with 1.5 inches in the old 7mm, it shot those same 3 each time in the same spot. If its wild and ranges 6 inches from one cold 3 shot group to another that's one thing. Otherwise, that's perfect.
I have a 270 Pencil barrel I am going to get back to, first shot is 1.5 inches to the left, then two close together. That is not good. That's with good barrel cool down. Challenge will be to see if I can get 3 to shoot like SPs.
If the first two shots were close I could live with it just fine. First one off that far and two that make it more 2 inch group, no, not good.
Target: Yep, that's where the 5 shot and 10 shot groups tell the story.
It also separates out target shooters from non target but says nothing about how good they are hunting.
I shoot 5 shot groups but I am all target these days.