A bourrelet is a specific feature found on the projectile of large-caliber artillery, such as shells and missiles. It refers to a raised band or ring that is located around the circumference of the projectile, typically near its base. The primary functions of a bourrelet include providing a guiding surface that helps ensure better alignment within the barrel during the firing process, minimizing gas leakage, and contributing to the overall stability of the projectile as it travels through the air.
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