Sig220.45 is correct. As I recall, the .44 Magnum carbine actually spawned the 10/22 - NOT the other way around. Weren't they called "The Deer Slayer" by Ruger? They are still very popular, and don't seem to come up very often for sale. I think I remember reading that the only real problem with them is you need to replace the plastic/nylon buffer to keep them operating. I'd love to have one as a brush gun.

Regards,

Dave