Is there a way to know how much ammo the Free Element/Ammo skill will add to a gun, without putting the deco into your gear and then hunting? Also, so far all the LBG's have been a bit underwhelming (killed up to Velkhana now). Guess I'll have to wait until I can unlock the higher tiered Lunastra weapons.
From google:
Ammo Up lv 1 affects: normal 1, pierce 1, spread 1, sticky 1, and cluster 1.
Ammo Up lv2 affects: normal 2, pierce 2, spread 2, sticky 2, cluster 2, recover 1, poison 1, paralysis 1, sleep 1, and exhaust 1.
Ammo Up lv 3 affects: normal 3, pierce 3, spread 3, sticky 3, cluster 3, recover 2, poison 2, paralysis 2, sleep 2, exhaust 2, flaming, water, freezing, thunder, dragon, slicing, demon, armor, and tranq.
You get +1ammo, unless you have 5+ ammo already then you get +2, and Wyvern gets always 0 apparently.