Tier+Tactical Weaponset has ammo pickups, and reloading, but you can disable ammo pickups/reloading. Same for Frog's expansion. Has no hands on the weapons, which I think is good.
CnS Weaponset is nice, refills ammo using events, but small and has a big bug. When you drop them and pick them back up you get a full clip.
L4D2 Weaponset is really nicely done, but it only has reloading if that's what your looking for.
BF3 Pack has ammo and reloading (i think) but is not very polished.