This was an experimental multi-ball load, probably by W.W Greener, based on the 577 2 ¾” case. 3 lead bullets were nestled on top of each other and the bottom one would have been held in place by stab crimps on the juncture of the neck and shoulder. The first specimen below is a new primed empty case as described in Hoyem p.92. The bottom specimen was loaded with a paper patched lead bullet.