I want to cut back the bolt stop and use a 3006 magazine so I will be able to seat bullets out in my T3 308 win. I want bullets to touch the rifling and have the cartridges still work through the magazine.

Has anyone done this before?

Tracy

YUP  Buy the factory 30-06 bolt stop and replace in a couple of minutes and use the long cartridge mags – i did it with my 338 Federal !  ;D  RJ

you can also grind the short action stop back to the last vertical beam and the bolt is now a long action.

Since the .308 is just a cut down .30-06 there shouldn't be any problem at all. You're basically just wishing to acquire a long action rifle chambered in .308

Tikkas are all manufactured in the long action configuration and to make it a short action, they just put in a shorter bolt stop. Change it out and voila, long action.