military - What kind of rifle used this shell case? - History

Please, anyone able to tell me what kind of shell is it and what mean this symbol on the bottom ? Is it from 1917?

US Army eyes sixfold production boost of 155mm shells used in Ukraine

How Did Guns Get So Powerful?

Hands-On With the Army's New M7 Rifle and M250 Machine Gun

Ammunition, Bullets, Shells & Cartridges

military - What kind of rifle used this shell case? - History Stack Exchange

Combat Shotguns Of The Vietnam War

Heckler & Koch G11 - Wikipedia

10 Innovations That Led to the Modern Bullet

9 Key Weapons of the American Civil War

M4 carbine - Wikipedia