I just picked up a screamingly mint Sharps model 1863 carbine, s/n in the C11,000 range. I originally thought it to be an original percussion gun but it turns out to be one of the thousands converted to 50-70 by Uncle. Bad for originality, good for shooting. Judging from its condition, it was converted then put into a closet. How much does the conversion affect the value? Has anybody had any experience shooting these old carbines?