One of the prairie dog shooters that visited me this week wrung out my closeted Tikka t-3 Lite .223 with the 1-10" twist. I must admit that I was impressed! He brought along a Zeiss 4.5-16X varmint scope to mount on top and proceeded to shoot some impressive groups using Hornady 50 grain V-Max over H-322 powder and Rem 7.5 primers. All were around half MOA but there were a couple in the .25 MOA class for five shots; fired in 100+F degree heat. More impressive were 350 yard shots on grass obscured prairie dogs off of sticks, and one particular shot at 265 yards where all that could be seen was the face above the grass. He cleanly took the top of the head off.
In all this member fired 260 rounds of .223 in 5 days and killed heaps of prairiedogs. His highly regarded opinion was simply that the Tikka 1-10" twist guns shoot. I tend to agree. Much less fussy than the 1-8" Tikka I bought the year before using the same bullet weights. No surprise there.
Just an FYI.~Muir