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Primers

Winchester 209 shotgun primers. Other brands will work. The thing about shotgun primers is that they develop a lot of pressure. Federal 209a's develop the most pressure. In all our testing, Federal weren't as accurate. My belief is that they push the bullet off the charge before the charge is fully ignited. That's why I use winchesters in the only 209 sml I have left.

For module guns, I use Federal large rifle magnum primers. Rifle primers don't have the pressure issue.
 
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