Can I use my 30.06 caliber Remington 700 in the TAC21 Chassis? Anthony Bujak May 01, 2019 15:34 Follow Yes, you will need a Long Action chassis. You can use .300WM magazines for the 30.06. The feedlips will need to be adjusted to fit this caliber. Have more questions? Submit a request 0 Comments Please sign in to leave a comment.