Yeah, they are good. Make sure they will take a bottle cap, some do some don't. You'll never lose one to explosion, very thick and heavy. The best time to get them free is in(or behind) bars after New years day. The dumpsters are full. Also wedding reception halls after the weekend. I think they hold around 20 oz.
Then take a flat head screw driver and push out the metal plates that grip the neck of the bottle, and re-insert "Backwards." This will accomodate the larger neck of a 29mm bottle. I think on my red baron there is actually a 26 stamped into one end of each of these plates, and a 29 on the other end.
follow the link i have in my post to northern brewer, get the new bell and some caps. put the bell onto your red baron capper. Push the metal plates out, re-install them backwards and you will be ready to roll out like a gangster.