Valve changes how weapon reloads work in CS2 update
via store.steampowered.com
Short excerpt below. Read at the original source.
Valve’s latest CS2 update overhauls the weapon reload system entirely. Instead of a traditional reserve ammo pool that tracks individual bullets, each weapon now carries a fixed number of magazines. Reloading discards the entire current mag, including any unspent rounds, meaning even a single shot fired forces you to throw away the rest of that […]