G'day 450 Marlin reloaders. Had a bit of time at the reloading bench today and got to sorting out some brass. Measured both standard and short cases and found not a lot of difference in length. I've read posts here about machining dies to be able to factory crimp the short brass. Got to thinking and was wondering if i milled the necessary amount off a shell holder , would that work as opposed to shortening the die? What do ya think? cheers.