Rotating gas-check explained

A rotating gas-check (more commonly known as an automatic gas-check) was a copper plate that automatically attached itself to a specially-designed studless projectile of rifled muzzle-loading ("RML") artillery, sealing the escape of gas between the projectile and the barrel and imparting axial rotation to the projectile.^[1]

Gallery

1. RML 12.5in Studless Palliser Shell Mk I with Automatic Gas-Check
2. RML 12.5in Studless Common Shell Mk I with Automatic Gas-Check

See also

• Gas-checks in British RML heavy guns
• Attached gas-check

External links

1. Photos of a used 9 inch automatic gas-check recovered from the sea. http://fortlytton.net.au/?page_id=294

2. Photos of four gas-checks. http://www.victorianforts.co.uk/art/check.htm

3. Photo of 17.72 inch automatic gas-check http://www.bbc.co.uk/ahistoryoftheworld/objects/_GozUMNFTpem-NJXZpFgAQ

References

• 1881 Book: Secretary of State for War. Treatise on Ammunition Third Edition Corrected to November 1881. 1881. Her Majesty's Stationery Office. London.
• 1887A Book: Secretary of State for War. Treatise on Ammunition Fourth Edition (Revised) Corrected to October 1887. 1887. Her Majesty's Stationery Office. London.

Notes and References

1. Ref 1881 pp. 188-190; Ref 1887A pp. 155-156