Ammunition & Hand Loading > Cartridge and Shotshell reloading

Primer question - please help.

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DenmanShooter:
Made a mistake and purchased some Small Pistol Primers For MAGNUM pistol loads.  Winchester WSPM instead of WSP.

I have a box of 1000.

Question is...

Can I use these in .40 S&W ? ( I currently use standard small pistol primers).

Can use these as a replacement for Small Rifle Primers, specifically .223 Rem ?

Do I need to sell/trade for correct primers?

JAK:
Everything that I have read about primers is that the magnum versions will cause a increase in pressure compared to the standard primer due to igniting more of the powder quicker.

If I remember right, pistol primers are softer then rifle primers.  You might get away with it with mild loads, but would be risking perforated primers.  In a semi-auto you might even end up with slam fires which could also make life interesting.

I would recommend selling/trading them to someone that needs them.

John K

SS_N_NE:
I know for sure others have used magnum primers in .40 s&w with no issue. I would expect to start a work up with a slightly lower powder charge.

Typically pistol primers are made with thinner wall thickness and rifle primers are made with thicker wall thickness. A rifle usually has greater firing pin impact and higher pressures. The thicker wall being the primer of choice for rifle.

DenmanShooter:
Thanks to you both.

I am not desperate to use them so I think I will try to trade at the next gun show.

abbafandr:
sfg has had experience with this issue.  Can't find the thread at the moment but they are usable with a little caution.

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