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[QUOTE=bumpo628;5477471]I think you'll need to add a flash-hole pilot to keep it centered. The LRP diameter punch would not keep it in the center unless it was already very close. Maybe if you took a punch with an OD of say .225 (for the .217 berdan) and add a pilot pin it would work better. You could drill a hole into the end of the punch and press fit a guide pin for the flash-hole pilot.
I think this would work better than the ball bearing method since it would move more material into the pocket. A ball will only swage the top edge, but a punch would add a bit more material to hold the primer.
I just thought of something else. Maybe compressing the shotshell cup down to the right size is another way to do it. If you can figure out a way to form the cup a bit smaller before it is installed into the brass then it will hold the primer snugly.QUOTE]
That's starting to sound like a depriming pin and an expander ball using an arbor press to swage the mouth in.
Your shotshell primer cup idea gave me another idea for the larger berdan pockets. a short brass sleeve made from brass tubing or a bit cut off a .22lr case to sleeve the pocket then swage the mouth in to crimp it in and run it through an RCBS primer pocket swage to uniform it.
I think this would work better than the ball bearing method since it would move more material into the pocket. A ball will only swage the top edge, but a punch would add a bit more material to hold the primer.
I just thought of something else. Maybe compressing the shotshell cup down to the right size is another way to do it. If you can figure out a way to form the cup a bit smaller before it is installed into the brass then it will hold the primer snugly.QUOTE]
That's starting to sound like a depriming pin and an expander ball using an arbor press to swage the mouth in.
Your shotshell primer cup idea gave me another idea for the larger berdan pockets. a short brass sleeve made from brass tubing or a bit cut off a .22lr case to sleeve the pocket then swage the mouth in to crimp it in and run it through an RCBS primer pocket swage to uniform it.
I have been using 209 shot primers since 1968 in many cal. from 7.62x54 to 8x56, 8mm,308 and so on.Rimmed ones are the best to me but all will work. I started with low loads cast bullets then worked up to jacked ,never had a problem with midrange loads. I drill out the primers using a small dill bit, pop out the primer, then use a #B drill bit drill all the way through, then camphor the top with a bigger dill bit so the primer lays flat, and use a small socket the size of the rim of the primrer to set it with small hammer. If the holes losen up over time use a drift punch on the in side of case rim and tap with hammer it will tighten up. Even back in the 60s I hater to see brass go to wast. I have a cheep bench drill press less than $35 a set of rubber vice inserts . After doing it you can do 200 in a short time. Anneal the cases, use torch and water then full length resize , old brass cases get brittle.If you have a Lee collet die you can get up to 20 shot from case till you have to full length resize again . Cheep shootng with a little work!
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