43″ J.J. Henry – 1.66″ Square or Radius Rifling with Flared Plug

.54 caliber – 1.66" Square Rifling with Flared Plug, .54 caliber – 1.66" Radius Rifling with Flared Plug, .58 caliber – 1.66" Square Rifling with Flared Plug, .58 caliber – 1.66" Radius Rifling with Flared Plug, .62 caliber – 1.66" Square Rifling with Flared Plug, .62 caliber – 1.66" Radius Rifling with Flared Plug