You want to make it hummmmmm...have it rechambered for .327 Federal or if you don't want to ruin the collectors value find a matching .22 rimfire cylinder and have it rechambered and fitted.

As to a mold... Accurate Molds...I just got another one and it took only 10 DAYS....

http://www.accuratemolds.com/catalog.php

Take a look at #s:
31-105K
31-105KG
31-110H
31-120C
31-120K
31-120KG
and my favorite
31-120S
http://www.accuratemolds.com/bullet_detail.php?bullet=31-120S-D.png

Great trade you made...I am still kicking myself for passing a 7.5" Freedom Arms 97 in .327 Federal I would have had for $1750.00....

Bob

If you can not deal with reality, reality will deal with you....