40.9375″ Reading – 1.48″ or 1.66″ Square or Radius Rifling with Flared Plug

A .32 caliber – 1.48" Square Rifling with Flared Plug, A .32 caliber – 1.48" Radius Rifling with Flared Plug, A .36 caliber – 1.48" Square Rifling with Flared Plug, A .36 caliber – 1.48" Radius Rifling with Flared Plug, A .40 caliber – 1.48" Square Rifling with Flared Plug, A .40 caliber – 1.48" Radius Rifling with Flared Plug, B .40 caliber – 1.48" Square Rifling with Flared Plug, B .40 caliber – 1.48" Radiu Rifling with Flared Plug, B .45 caliber – 1.66" Square Rifling with Flared Plug, B .45 caliber – 1.66" Radius Rifling with Flared Plug, C .45 caliber – 1.66" Square Rifling with Flared Plug, C .45 caliber – 1.66" Radius Rifling with Flared Plug, C .50 caliber – 1.66" Square Rifling with Flared Plug, C .50 caliber – 1.66" Radius Rifling with Flared Plug, D .54 caliber – 1.66" Square Rifling with Flared Plug, D .54 caliber – 1.66" Radius Rifling with Flared Plug, D .58 caliber – 1.66" Square Rifling with Flared Plug, D .58 caliber – 1.66" Radius Rifling with Flared Plug