Musket to Big-Bore Rimfire: the Roberts Short-Frame Conversion
This video details the Roberts Short-Frame Conversion, a system designed to convert muzzle-loading muskets into breechloaders. It highlights Benjamin Stone Roberts' tilting-block design, its rejection by the US military, and its subsequent international sales. The conversion process, particularly the evolution from weak early designs to stronger receiver-based systems, is explained, along with the mechanical operation and disassembly differences between short-frame and long-frame models.






