Thread: 1st Shots from 300BLK AR.

Here are my first 1/2 dozen shots from my new 300BLK AR. The top 3 loose ones are factory Remington UMC 115 grn ammo and the lower clover leaf is my reloads using 125grn TARGEX HP Match and 17.1 grains of Hodgdons H110.
Shot at 50m off bags so I'm happy with the reloads, it's just under MOA. I bought the factory stuff so I had some control cases to double check my case sizing.

I'm using a JP silent captured buffer and spring and it's cycling fine with factory and 125 grain reloads. I shot some 220 grain Match Kings with 9 grains of H110 and the group was also a clover leaf but the gun did not cycle. I'll try the subs again when my can arrives as I think it will cycle ok with back-pressure. I will get the chrony out next time too.



Ray.