細節
A 4-BORE (4IN) SINGLE-BARRELLED HAMMER GUN BY T. JACKSON, No. 28419, Jones patent rotary-underlever, rebounding backlock, percussion fence, border engraving with traces of hardening-colour, figured stock with semi-pistolgrip and recoil-pad, damascus barrel
Weight 16lb. 6oz., 14 3/8in. pull, 42½in. barrel, approx. 7/8 choke, 4in. chamber, recent nitro reproof (for maximum service pressures of 800 bar.)