From Destiny 2 Wiki
|Description||Magazine drops on reload, wasting ammunition but greatly increasing reload speed.|
|Hand Cannons||Minuet-42, The Old Fashioned, The Defiant, Crimil's Dagger|
|Pulse Rifles||Infinite Paths 8, Jorum's Claw|
|Submachine Guns||The Hero's Burden|
|Sniper Rifles||The Mornin' Comes|
Drop Mag is a Magazine Perk.
Magazine drops on reload, wasting ammunition but greatly increasing reload speed.
- +30 Reload Speed 
- 0.9 Reload Duration Scalar
Reloading discards any ammo left in the magazine
Drop Mag is uniquely positioned as a Magazine Perk with power similar to a full weapon perk. Drop Mag has the same Reload Duration Scalar as Outlaw at 0.9. On weapons with high base Reload Speed stat values (>=70) the two perks are functionally identical.
- ↑ "Destiny 2 Update 2.9.0." Bungie, posted by the Destiny Dev Team, 9 Jun 2020, https://www.bungie.net/en/News/Article/49188.