Recommended Primer

[BWSmith]

Is there a Primer officially recommended by AAC for supersonic loads?

[TMH260]

Not sure if there is an official primer, but CCI standard small rifles work just fine.

[dbrown]

The 300 BLK website says "Remington 7.5 primers" but any small rifle primer will work just fine. I use CCI small rifle primers

[WhoDat]

Do Remmington 7.5 have the same scary primer dents when the bolt slams down on the round as the CCI-400's or is that just ARs regardless? Or civilian primers regardless...

[knoxville]

All AR's will do this due to a floating firing pin. You have 2 primers that I am aware of that are designed for semi autos. These have harder cups to prevent a slam fire. CCI #41's and Federal has a 205match AR primer. There are probably more than just these with the harder cups...

[BobbyG]

I use CCI 450 or Remington 7 1/2

[randyrucker]

cci 41 is a good go to primer.

[RBK3X]

CCI 41 are my first choice

[RickR22]

Yes CCI 41 or 450. I and others have had issues with the CCI 400 flatting out, even with low pressure subs. I used 400's and then went to the CCI 41 and the flat primer problem went away.

[imarangemaster]

i use the CCI #41s in my 5.56 and 300 BLK. Work awesome!