Y343 .56 Colt Revolving Rifle Variant (Selma Colt???)
Description: Here is a tough bullet to find and it's unlisted in a few bullet books. MM does list it as a Selma Arsenal Colt revolving rifle bullet. To my knowledge this has never been proven. I discussed this with Dean Thomas a few years ago and he did say that there were Colt Revolving Rifle bullets produced there. There is an example of the original wrapper out there but no cartridges that are known. This bullet is nice but does have a very small period ding that can be seen in photo 2.
Measures: D .566 L .981