4,5" grooved barrel,ammunition : 6 mm ME Flobert (1,05 g/16,20 gr.), +- 95 - 126 m/s (311 - 413 fps) = power : 4,74 - 8,40 J ----------------- 6 mm Flobert CB (1,15 g/17,74 gr.),+- 140 - 175 m/s (459-574 fps) = power : 11,27 - 17,60 J(hmmmmm :-))......