So, I'm done with CFE 223. Apparently you just can't get enough in the case to make proper pressure. Too bad because it looks like there's a potential for accuracy. Left group 3 shots, right group 5 shots. One fail to feed, ejecting at 3 oclock, and the bolt doesn't lock back. But wow, when you get 3 making one hole you sure wish you could erase the other two.