zapper
UZI Talk Life Member
I purchased this well made upper for my A2. It does not work with PMC or the Winchester white box, but it loves Sellier & Bellot. All the recommended 115 grain stuff. Has anyone had the same thing happen? Any tricks to tune it to the other ammo? I have the same ammo as the web site recommends. It is a blast to shoot when it works. My friends uppers love the white box ammo so I am wondering if its just a matter of shooting it for a brake in time? At this time I am not shooting it with the bolt weight in place. I am also careful to load the bag in the correct way. Any ideas?