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For the first time, I'm reloading some 10mm using assorted brass. it has all been tumbled, deprimed, reamed, sized, and checked for OAL. I'm using large pistol primers but so far out of 55 cases, I've had about 12 that won't accept the LPP. Could some of these (I've checked, they are all marked 10mm) cases be for small primers? I've not tried any yet since I thought 10mm required LPP. If they need SPP, should I use just standard or Magnum, if it even matters. | ||
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This Space for Rent |
Looks like 10mm’s do come in SPP as well. Cartridges with SPP for sale We will never know world peace, until three people can simultaneously look each other straight in the eye Liberals are like pussycats and Twitter is Trump's laser pointer to keep them busy while he takes care of business - Rey HRH. | |||
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Plowing straight ahead come what may |
This seems to be spreading from .45ACP to other calibers…about 25% of .45ACP brass I pick up as range scrap (especially after our County Sheriff’s Department uses our range for qualifying) our city police are still banned for giving away the gate combination to our private range…why the changes in primer sizes…it’s gotta be that ammunition manufacturers are preparing for upcoming changes to availability  ******************************************************** "we've gotta roll with the punches, learn to play all of our hunches Making the best of what ever comes our way Forget that blind ambition and learn to trust your intuition Plowing straight ahead come what may And theres a cowboy in the jungle" Jimmy Buffet | |||
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| Member |
Thanks all. I thought I'd got a bad batch of primers or something. | |||
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| Moderator |
The difference between large and small is, or should be, visually apparent. Might some of your cases be nickled Speer? Speer crimps their primers in Gold Dot loadings and the primer pocket must be chamfered to accept the correct primer. At least that has been my experience reloading for 45ACP. __________________ "Owning a handgun doesn't make you armed any more than owning a guitar makes you a musician." -Jeff Cooper | |||
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| Buy that Classic SIG in All Stainless, No rail wear will be painless.  |
Drawing from the SAAMI website. If you keep two appropriately sized twist drill bits on your reloading bench, you can use the shank (the part of the drill bit that goes in the drill chuck) as a pin gauge. One for small, the other for large. Verify shank diameter with a micrometer or accurate caliper.  Primer_Primer Pocket Dimensions by cee_Kamp 32ACP, on FlickrNRA Benefactor Life Member NRA Instructor USPSA Chief Range Officer | |||
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Spread the Disease |
First thing I thought of. As has been said, it should be obvious if they are large or small primer pockets. Is that it or did you just have seating issues? ________________________________________ -- Fear is the mind-killer. Fear is the little-death that brings total obliteration. I will face my fear. I will permit it to pass over me and through me. And when it has gone past me I will turn the inner eye to see its path. Where the fear has gone there will be nothing. Only I will remain. -- | |||
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