So got a like new CTR T3X in 6.5 Creed and I am going to make it a project gun. Planning on getting a Prefit barrel from bugholes with his bugnut setup in 22 Creedmoor. For those of you that have messed with removing factory Tikka barrels are they pretty stubborn to get off? And also would a rear entry action wrench be best or regular external action wrench? Any help would be appreciated as I need to order a action wrench rather soon. Thank you in advance.