44 Henry spherical. Henry also supervised a different rifle style centered loosely to the Volcanic to employ the new ammunition, retaining only the overall kind of the breech mechanism plus the tubular journal. This grew to become the Henry rifle of 1860, which was manufactured by The brand new Haven https://highimpactrounds.com/product/winchester-target-223-rem-55-gr-fmj-3240-fps-20-rd-box/