V1
What exactly this thing does:
Both bows are operating from "Clips" means you have up to 15 shots without reload animation. But charging the shot of course is not changed at all. Damage is not changed at all. Armor Piercing chance is 50% on each one.
Added a minor ammo pickup somewhat similar to Thanatos' pickup. So can actually use gambler with longbow and snipe for a bit across the map. Minor ammo pool penalty.

V2
This one makes longbow and DECA reload much faster, vanilla ammo pickup, added recoil, considerably lower concealment for both. Somewhat damage penalty for both. Armor piercing chance is 50%.

Goes without saying those 2 mods are imcompatable with each other.
"Better Longbows" folder unpacked from .rar  - goes into Payday2/mods folder.