In case you didn't see this on the muzzleloader forum, it's worth checking out:
http://www.rokslide.com/forums/showthread.php?30582-Cooper-M22-ML&p=351247&posted=1#post351247
http://www.rokslide.com/forums/showthread.php?30582-Cooper-M22-ML&p=351247&posted=1#post351247
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