I knew several rather well. Their owners found them very nice but they would not take much really hot NATO class ammo. By today's standards that would be the +P+ stuff.
Ditto with the 90 gr. ammo such as the Super-Vel stuff of that era. Some of them, anyway, wouldn't feed it reliably. If your's won't, it will show up in 20-50 rds.
All this doesn't mean it's not a good gun, it just needs to have some testing. Even the modern designs sometimes are flawed. E
