It depends on your chamber, as in trim length. I use 300Win brass, sized in the Norma die and then trimmed to a matching proper length. The 338 and 7mag brass comes out short for my chamber, and 300 stuff is already 30 cal. My die is set to headspace the round on the shoulder, versus the belt, so if the bolt closes hard on a newly formed piece, I know its to long. This is a start up procedure, as I already know what length to trim for my rifle. yours may be different as noted before concerning the different reamer specs.
