Hi: starting to gather components for my 300wsm build. i have a new rem 700 vsf lefthand in .308 and am re barreling it to 300wsm, i have a new bolt coming from pt&g. i don't really need a DBM like seekins as this is going to be a hunting type rig and i could really use the $400.00+ towards a new scope.can my gunsmith just open up the lips in the mag. box to feed the fatter case of the wsm??