300BLK works fine. Never tried 5.56.
I really like the 300BLK, btw, and the main reason I bought it was to be able to form cases from 5.56 and shoot my own cast bullets in an AR. Recent events explain why.
Complete thread:
- Cast in an AR -
Dave B,
2013-01-21, 20:22
![[*]](themes/default/images/complete_thread.png "Open whole thread")
- That is a good question. We used to shoot the Atkinson - Hobie, 2013-01-21, 20:43
- 300BLK works fine. Never tried 5.56. -
John K.,
2013-01-21, 20:44
- Just looking for options - Dave B, 2013-01-21, 21:07
- 300BLK works fine. Never tried 5.56. - Slow Hand, 2013-01-22, 04:20
- John, a couple of questions - mcassill, 2013-01-22, 08:02