Primer question - SRM in 300AAC or 5.56???

[jumpmasterkolo]

I've been desperately looking for months for small rifle primers for 300 AAC and 5.56. I finally jumped on and bought some CCI Small Rifle Magnum Primers #450. It's probably overkill - BUT can I use them in either caliber...?
Thanks - KʘLʘ

 

[GrayCreed]

Small rifle magnum were designed for the 223 rem, and technically cci 41 are hard cup small rifle magnums. But you can still use the cci400 in there too it will go bang.

 

[jumpmasterkolo]

Small rifle magnum were designed for the 223 rem, and technically cci 41 are hard cup small rifle magnums. But you can still use the cci400 in there too it will go bang.

Thanks!