Originally Posted by
JKH
I tried a load of 9 grains Unique that another member stated cycled his AR15, I didnt shoot for groups but stricly for function, the bolt opened but not enough to eject the spent case. My AR has a 24" bull barrel so that may be why it wouldnt cycle.
Next step is a load with AA2230C. I have also been thinking about 2400, anyone get an AR with rifle length gas system to function with this powder? What about IMR4227?
How far could I go with Unique or is 9 grains the safe limit in .223/5.56?
Jeff