Great groups NGHunter!
When I sight in my Rifle I usually take 1 or 2 more along or a Friend that's sighting Their Rifle in also....I shoot a Group of 3 and adjust my scope accordingly and then let my a Buddy shoot their Rifle a bit giving mine time to cool down and I either shoot a different Rifle or resume sighting in my first Rifle if it's set long enough to cool off or I clean it and start sighting in again.
I've also bought several lower priced Entry Rifle that shot just as good or better than a higher end high-dollar Rifle!Putting a better Scope on a cheaper Rifle and trying out different brand and grain Ammo will help a lot in making a Rifle shoot better when You can see better and find Ammo that groups better in a Rifle with a certain twist ratio!