ozzie-admin2020-12-26T10:29:09+10:00 The factory Tikka Tac A1 comes with a 338 diameter muzzle brake and I wanted something calibre specific for my 6.5 Creedmoor so I went for the Grizzly Gunworks from Chassis Systems. Related Posts July 14, 2018 By ozzie-admin 6.5 Creedmoor, Accessories, Muzzle Brakes, Tikka chassis systems, grizzly, mil-spec, review, Rifles, ruger precision, Sniper, testing, Tikka, tikka t3x Comments Off on Replacing the factory Tikka Tac A1 Muzzle Brake (with the correct diameter) Share this post Facebook Twitter LinkedIn Email