>>101
https://en.wikipedia.org/wiki/Flechette#Shotguns
Flechettes had flatter trajectory over longer ranges than spherical buckshot, but combat effectiveness did not justify continued production.

https://thefiringline.com/forums/showthread.php?t=394663
Flechette ammunition indicated a high lethality at all ranges with several one shot kills at engagement ranges to 100 yards, flechettes were prefered by combatants equally to 00 buckshot during this test phase.

100yards=91.44m
あとフレシェットは旋転ではなくフィンで方向を安定するので風の影響を受けやすい