Well, it might end up working just fine.

I'm not a fan of bargain optics because you typically end up getting what you paid for or less when they fail at the wrong time, but every now and then you hear of someone beating the crap out of a budget scope that continues to work very well.

I would be concerned that the recoil from an ML might eventually take it's toll on the ability to hold alignment.

But hey, you have it so mount it up. And as you mentioned if you don't like it for an ML scopeit would make a nice setup on a .22 with no recoil.