Thread: Tiika t3 7mm08/284

Would the 7x57 twist rate be better for the bigger projectile too or the normal 7mm08 one ok?

Originally Posted by csmiffy

Would the 7x57 twist rate be better for the bigger projectile too or the normal 7mm08 one ok?

Depends of the rifle manufacture. Tikka's 7mm08 twist is 9.5" same as 7mm rem mag, Remington twist is 9.25" both are fine for the 162Gr projectile's.
So manufacture's (Savage comes to mind) only use a 10" twist which is not so good.

I have often wondered why this is the case. In 6.5 the industry standard has become 8 twist, yet most manufacturers still produce slow twist 7mm rifles which are not suitable for stabilising some of the new, heavy and long projectiles.

My 7-08 based T3 spins 162 ELD-X just fine, but my custom 7 RM has an 8.7 twist barrel for the 180 ELD-M.

Too much twist can be a bad idea, but manufacturers need to catch up and produce rifles in the 8.5-9 twist range.