I had a Brocock Fox and two Berretta 92Fs running on TACs. I think the 92Fs were 8.6mm; they would actually chamber a 9mm round and I have no idea if the gun would of exploded into pieces if the barrel were bored out and and I pulled the trigger, I'm not so stupid I needed or wanted to find out. I can see why they banned and I ended up destroying mine in my dads vice. I'd sold the Fox on well before the ban.