m80

Hey everyone. I am having some issues with a new M5 and I was curious if anyone had any insights into the issue. New M5, Stock complete upper with a 20" barrel and a rifle buffer system. It doesn't like M80 for some reason. I put about 100 rounds of M80 through it and it wouldn't lock back or...

Looking at picking up some more brass and this came across my radar. https://www.grafs.com/retail/catalog/product/productId/26972 Thoughts? Sure its using mil spec primers, but, can't be that far off for what I need. (1MOA or less) I might try sorting brass on weight to see if matters.

I didn't know where to post this one..Does anyone know anything about this ammo ? I have 7 boxes and don't know what to do with it. All the boxes are sealed and I don't want to open any of them till I find out about it. I never heard of it before and there's not much info on it. Is it worthy...