While Bill Toth was testing my Titanium Firing Pin he fired Privi, French surplus, Egyptian/Arabian surplus and FNM Portuguese ammo. Each ammo type worked as it should with the exception of FNM.
This photo shows that very FNM Portuguese ammo. The bottom bullet and detached shell casing was cycled through his test gun but not fired. When Bill extracted the round he discovered it separated just like you see it here. When the bolt ran the round into the chamber the bullet detached from the shell. Whew, can you say inadequate crimping!
The three dirty FNM shells above were fired. Notice the extensive fouling all over the cases and massive build up in the exactor ring. These rounds separated in the chamber too and the loose powder in the bore created this fouling.
We're sure you see the potential danger using FNM ammo. If an ammo box like the one in the photo is offered to you say "no thank you" in a nice way and move on to other options. Enough said? Yup!
[FNM 7.5 x 54mm, Lot #9001]