Attached gas-check

An attached gas-check was a copper plate that was physically attached to the base of a studded projectile of rifled muzzle-loading ("RML") artillery, sealing the escape of gas between the projectile and the barrel.

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1. RML 12.5in Studded Palliser Shell Mk III with Attached Gas-Check Mk II
2. RML 12.5in Studded Common Shell Mk I with Attached Gas-Check Mk II
3. RML 12.5in Studded Shrapnel Shell Mk I with Attached Gas-check Mk II

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

• Secretary of State for War (1887). Treatise on Ammunition Fourth Edition (Revised) Corrected to October 1887. London: Her Majesty's Stationery Office.  Chapter XII

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