弾だん着ちゃく距きょ離り

noun

range (of a gun); distance a projectile travels

Technical term used in ballistics and military contexts. Refers to the distance from the firing point to the point of impact, or the effective range of a firearm.

• この銃じゅうの有ゆう効こう弾だん着ちゃく距きょ離りは約やく500メートルです。

  The effective range of this gun is about 500 meters.

• 弾だん着ちゃく距きょ離りを正せい確かくに測そく定ていするにはレーザー測そっ距きょ儀ぎが使つかわれる。

  A laser rangefinder is used to accurately measure the impact distance.