Nigerian 7.62 NATO Soft Point?

A couple decades ago, I bought a case of military surplus 7.62mm NATO in the odd configuration of 150 gr. Soft Point.  This is one those weird crates that once open you get four handles that rip open a thin metal case that is presumably air and water tight.  Inside were 50 boxes of 20 rounds each.  I have never seen Nigerian ammo before so I should probably run a box through one of my rifles before making assumptions about it 

Have any of you ever run into Nigerian ammo before?