I have been trying a few things looking be able to use some less expensive brass for a 358 Norma I hope to sport soon.
Found an old 300WM case and started taking a real hard look at the budget? ($35) Jax dies I got off of flee-bay. The expander had a real short taper to it so I figure that it was made to just resize factory fodder.
Started looking at the new RCBS Whelen die and thought its expander was a bit more tapered and might work to resize 30 cal. brass. Seemed to screw in fine so there I was a couple of minutes later with real fine looking 358 Norma Mag. brass.
Now, because I used 300WM brass it will be .100" or so too long so I will have to do a little trimming.
I used my Whelen die to resize a few 30-06 shells and it seemed to work pretty good. Only one had a little split in it--a good one for OAL checking (NOT to used for a live round).
I have read some information indicating that using 338WM brass can result in the shoulder being a little short of the full Norma length. I hear these will fire form nicely but I was hoping to get a little closer on the initial sizing so as to be able to use the cartridges in load development without having to first fire form them. Pushing the shoulder back and trimming the neck a little seems like the way to go.
Am I on the right track or am I missing something?
I do not have very much experience with this sort of thing and don't want to compromise safety for the price of a bag of brass.
I was also wondering if sizing from 30 to 35 cal was too big a jump for a single pass.