I was doing some testing with my rig the other day (Rem 700 untouched, prefit Criterion barrel, MDT XRS chassis. 5 shot group was .380" and 10 shot groups were .613" and .630" all at 100 yards with bipod and squeeze bag in modified prone (standing, shooting from the bench). I found I was well out of the node, but the rifle shot fine. The bullet is the 77 TMK for this load.
I firmly believe that a good barrel with the right load can shoot .3" for 5 shot groups at 100 yards on average with a good shooter pressing the trigger. Better is possible, but well beyond my will to chase.
Yup,.. THIS ^^^ My experience with, a 6 XC, Criterion Barrel , also !
I'm using, a Medium Heavy Sporter, 24", .707 Dia. Muzzle ( fairly, Stiff Barrel ) 10.5 Pounds, W/ Brake in a Pillar / Glass Bedded, H-S Precision stock, Home made Toe, "Bag Rider" on, a SS Rem 700 New, CNC Machined, "Pre- Closing", Remington, short action from, Bruno's. ( It was Beautifully Square and Well, Machined ! ).
5 shot Group's, down into, the Low 2's to, high 3's are fairly common with, 107 SMK's and 95 to 108 grain Bergers. And Up to, a 1/2 MOA with, my 103 gr. ELD-X, Coyote Load's ( NO tuning, Done ).
6 x 24 Scope / Mts, Stock, Action, Crit. Barrel and Jewell, Target Trigger set at 1 lb. cost was, just under, $3,000.
As an old Retired, Fixed income guy,.. Covid / Trump,. Paid $2,000 of, it, tho !
Gotta LOVE those Accurate,.. 6 MM's !
If, building, a .22 cal Today, personally, I'd look Hard at, the .22 GT or .22 XC