I personally don't have this ammo but there are video's and pictures making rounds on internet where at least two guys had their guns blow up and they were using the same ZSR ammo down to the lot number. Thought of sharing the info for awareness.
Gun exploding YT Short video:
YT Video :
Pictures of blown up Zastava M77 : https://www.reddit.com/gallery/11ixtn5
Gun exploding YT Short video:
YT Video :
Pictures of blown up Zastava M77 : https://www.reddit.com/gallery/11ixtn5