I just purchased a savage m14 classic in 270wsm. I was wanting to rebarrel to 7wsm and run 180 bergers. These bullets are gonna need to be run long, probably +3"coal from the data I've been seeing. I know the savage factory mag is around 2.9xxx". So i would need to run a different system there. How long of a coal will the short action bolt throw pick up and feed? Can it be done?