[Zack The Ripper]

I had terrible times with BioShot 0.30g BBs for a few weeks last year.

I had a VFC AK-74 shooting 400fps using 0.20's with a stock VFC hop unit, Prommy tight bore and PDI W-Hold rubber. Had a bunch of MAG brand midcaps and they all pushed everything through without issue on semi and full auto, any hop setting.

Except for the BioShot 0.30g BBs.

Would not feed anything at all on semi and on full auto would only feed about half of all piston cycles. Had no issues with any other BBs and weights. I also had no issues and still have no issues with BioShot BBs in any of my other guns.

Even a M4 I had that also had a Prommy tight bore and PDI W-Hold rubber fed them flawlessly.

It was one of those things I just chalked up to a "freak-out" combination of parts and BBs that just didn't get along. It is apparent however that my particular instance is/was not limited to myself. I have since then used the BBs in a multitude of platforms without issue though.