CCI Large Pistol Magnum primers, Cabela's/Bass Pro, where shipping to the store is free ...
https://www.basspro.com/shop/en/cci-standard-primers
Eta: 1000 pack also available ...
https://www.basspro.com/shop/en/cci-primers
https://www.cabelas.com/shop/en/cci-primers
https://www.basspro.com/shop/en/cci-standard-primers
Eta: 1000 pack also available ...
https://www.basspro.com/shop/en/cci-primers
https://www.cabelas.com/shop/en/cci-primers