[Help] Changing Spread/Recoil/Damage

[x1mart]

I want to know how can I change the recoil, the spread and damage of weapons.
I saw in another threads that it was in dbo.Items_Weapons, but I tried and nothing changed.
Can someone help me please? :/

[MentaL]

[Oosmar02]

itemdb.xml,

\Data\Weapons\itemsDB.xml