He said he "used to shoot but decided to quit and sold his guns then decided to sell all of his remaining ammo for whatever he could get for it." He had 9mm, 25 auto, 30 carbine, and some 12g shells among others I didn't look at. I bought roughly 100 rounds (didn't personally count them) of 9mm ammo which was all he had for 5 bucks, which is what I offered. Mixed in there that I could see at a glance were Wolf, CCI, and FC (which I think is Federal) and there were also variations of FMJ and HP.

I figured heck, maybe this is an easy and cheap way to test some loads in my SW9VE since I haven't had it that long but then again I thought I'd ask and see if you guys thought it was a good idea before I put my face and hands on the line.

It looks perfectly fine to me. I think it's worth a test.