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Roshi · February 10, 2013, 04:28 PM

The bore on my Cimarron "1871" which is a .38 Special/.38 Colt version of the 51 Navy with a barrel that never had a loading lever, is .357

If you go with a Kirst conversion in a 51 Navy and shoot factory ammo the bullets are going to be undersize for the bore.

February 10, 2013, 04:28 PM	#5
Roshi Senior Member Join Date: December 21, 2010 Location: Houston Posts: 223	Conversion bore The bore on my Cimarron "1871" which is a .38 Special/.38 Colt version of the 51 Navy with a barrel that never had a loading lever, is .357 If you go with a Kirst conversion in a 51 Navy and shoot factory ammo the bullets are going to be undersize for the bore.