Originally Posted by Shawn Carlock
We ran into 2 issues when we tried this:
1. The thru hole was not large enough and sized the neck smaller than the bushing did.
2. The bushing is not located in the proper position and doesn't fully size the neck.
The 1st one should be pretty self apparent if a user runs into that problem.
The 2nd one I understand; Just the opposite of going down in caliber with the neck bushing dies. Trying to go up a caliber will position the neck bushings farther away from the neck/shoulder joint because the length of the shoulder is shorter on the larger caliber case than it is on a smaller caliber case - all other case dimensions and angles being equal. This is the same reason I have to back off the neck bushing depth adjustment when I use the 338 RUM die to neck size my 25 RUM brass. The length of the shoulder run is much greater on the 25 RUM than the 338 RUM. If I left the neck bushings at the same 338 depth setting for the 25 RUM, the bushing would collapse the shoulder of the 25 RUM cases.
Thanks for clarifying the issue. I agree that 'highridge1' would find that he is unable to adjust the neck bushings down to resize the normal depth of his case necks if he examines his resized casings. Doesn't mean they won't hold a bullet and shoot it down the barrel. But less 338 RUM or Edge case neck will be resized in the 300 RUM neck bushing die than in the 338 RUM or Edge neck bushing die.