Measuring between what surfaces constitutes correct barrel length?

Measuring between what surfaces constitutes correct barrel length?

• A. The circumference of the barrel
• B. The distance from the breech face to the crown
• C. The distance from the muzzle to the stock
• D. The total length of the firearm

Answer: (B)

Barrel length is defined by how long the actual bore runs inside the barrel, from the closed breech to the muzzle end of the bore (the crown). Measuring from the breech face to the crown captures the true length of the rifled portion that affects velocity and accuracy, regardless of any muzzle device, stock, or overall firearm size. The other options describe surfaces or overall dimensions that don’t reflect how much bore length the bullet travels through, so they don’t indicate the barrel’s true length.

Barrel length is defined by how long the actual bore runs inside the barrel, from the closed breech to the muzzle end of the bore (the crown). Measuring from the breech face to the crown captures the true length of the rifled portion that affects velocity and accuracy, regardless of any muzzle device, stock, or overall firearm size. The other options describe surfaces or overall dimensions that don’t reflect how much bore length the bullet travels through, so they don’t indicate the barrel’s true length.