I don't think he's a bad guy or even dishonest. He had some ammo he wanted to trade round for round. I asked him point blank if it was factory ammo and he said "Yes, factory ammo." Turns out it's not factory (12 different headstamps with all the same projectiles and primers, some rounds still had some carbon fouling). He got them from another ODT'er who said it was factory. Anyway, it's neutral feedback, not negative, because part of it's on me for not checking it over before I traded him my factory ammo as we agreed. He did offer to trade back because he didn't want to make a bad deal but then went silent...
He was on time and had communicated great until after I asked him to trade back, plus he drove much further than I did to trade, so I wouldn't say not to deal with him, just check everything out before you make a trade.