I intended to shorten the pin Dragoon, but that won't solve the problem of it creeping forward. Research on the net shows that this is not as rare a problem as I would have imagined. Looks like a Beltmountain cylinder pin might be the fix. They have two sizes .2495 or .2515. I hate to spend $40 for a micrometer just for this, does anyone else have a Cimarron Frontier by Pietta in .357 and know the diameter of the base pin? I have emailed Beltmountain, but their only listed phone number is a Fax line?