Could someone provide me with twist rate of a Tikka M55 22-250? Thanks in advance.
It's the standard 1 in 14".
Tikka have always used the same barrels and twist rates in their sporters be they M55, M558, M590, M595, or T3 actions. The same goes for the long-action equivalents. The barrels have retained the same length, taper, and twist over the years ... but the blueing and finish has gone downhill!
The barrels in the M55/M65 look shorter than those of their successors but that's an illusion because the earlier actions are more compact. I've checked the M65 .308 against a T3 .308, and they are the same tube.
The only exception to this is the T3 series in .223/5.56mm. As these could have a target shooting use you can now choose a faster 1:8" twist, rather than the standard 1:12" twist which is still on offer.
2 full turns in a 22" barrel makes 1in 11/12 twist in my book thats what my Tikka 22-250 chucks out just checked its the continental without moderator (Standard Barrel)
Done with a tight as a fishers ring piece patch on 22 jag on a rotating rod indexed with a tape flag
Definitely not 1 in 14
Thanks for your contributions to this, MS and Hubert. This is odd, as it's not what the Tikkakoski stuff says but you have the real article to hand.
I've just used the rod method to check out my Tikka .22-250, and got almost 1.5 turns in 20.25" of rifling from the mark so it's the standard 1 in 14 twist. My .223 checks out at about 1.7 turns so is the standard 1 in 12. Thank the Lord for giving us wet Sunday afternoons to resolve issues like these.