Needham Conversion.

[salpal48]

anyone shooting this conversion. I was reading That the correct caliber was 58 centerfire US Musket.
. I have several 58 originals in My collection but nothing seems to Fit. . Fred Datig and Hoyems's book show several
The closest cartridge the will chamber I have is a 58 centerfire carbine. ( 58 Remington carbine)
anyone shooting and have cartridge specs
sal