So I got out to the range yesterday to work on two pet projects of mine, the suppressed .300 Blackout short-barreled AR and the Reising SMG.
And if you'll notice in the picture above, the magazines for this rifle are all marked for the .300 round. Hopefully, designating specific magazines exclusively for the .300 BLK round will act as a check to keep one of those rounds from being accidentally introduced into a 5.56mm AR and prevent the catastrophe which would surely follow. I also keep this rifle segregated from the others in 5.56 and stored seperately, again to minimize the possibility of an ammo exchange between the two types. It's been shown a few times now that a .300 round WILL chamber in a 5.56mm rifle and fire...once.
Then it was time to try the Reising out once again, because I haven't quite burned up my entire stock of .45 ammo trying to get this gun to run right.
It was a great day out, and as an added bonus, I came home with 20 rounds of spent Norma 6.5 Carcano brass that some other shooter didn't bother to pick up. Since I have two Carcanos, that was a nice gift to me from whoever left it behind as well.