Tough to deprime hulls
 

I'm having a problem I've never encountered before. I am reloading some Cheddite .410 hulls that have been fired one time. They were bought new as primed hulls, loaded once, fired and now in the process of being reloaded.

Problem is, the spent primers are the hardest to punch out that I have ever encountered in 45 years of shotshell reloading. A MEC single stage press sounds like it's about to fly apart from the force needed to punch the old primer out.

I have a shell holder for my RCBS metallic press that fits the .410 heads, so I tried using it with a decapping die. The punch on it is so small in diameter that it punches the center out of the primer but leaves a "ring" stuck in place in the primer pocket.

Question: does anyone make a shotshell decapping die for a metallic cartridge press that has a decapping pin large enough to prevent the center from being punched out of the spent primers?

Contact CH-4D they “might” have such an animal .

Could be that the primer has partially rusted in base. We would see that on hulls that had gotten picked up for reloading. I used to have a MEC 12ga hydraulic that didn't have enough push to push out the primer.

No rust on these. Primed at the factory, picked up immediately after dove shooting was over.

I'll check them out Craig, thanks.

Stan, make sure the RCBS shell holder has a hole large enough to allow the spent shotgun size primer to drop through.

Thanks for that tip, David. The hole is plenty big enough. Most of them fell out but some were stuck in the pocket so tightly that the little pin punched the center out of the primer and left the outer "rim" stuck in the pocket.

If I cannot find one for sale I may just have a machinist friend make me a larger diameter punch to go in my decapping die. That would solve it.

For those of you into metallurgy, would that be machined from oil-hardening or from water-hardening steel?

I had similar experience with a flat of Rem GC 12 gauge hulls. They were all my own once fired hulls, and when inserted into first de-priming station, they would actually bow out the base until finally popping the primer out. lost quite a few hulls as they wont sit flat anymore..
My same guns firing all the shells, same press I used on all my shells. MEC 600.. No issues since that flat. I dunno..
Mattly

I have one or two PW 375s sitting idle that I use for such chores.