So looking over this for 5th edition made me wonder if it is usually considered the same in 3.5 since it is not specified.
Spell Storing: A spell storing weapon allows a spellcaster to store a single targeted spell of up to 3rd level in the weapon. The weapon strikes a creature and the creature takes damage from it,the weapon can immediately cast the spell on that creature as a free action if the wielder desires. This special ability is an exception to the general rule that casting a spell from an item takes a least as long as casting that spell normally.... Once the spell has been cast from the weapon, a spellcaster can cast any other targeted spell of up to 3rd level into it. The weapon magically imparts to the wielder the name of the spell currently stored within it."(DMG,225)
So because of the last bit, is the wielder considered the caster for bonus purposes or is it the original caster? Is it considered the weapon? For example the damage added from a warmage's Int modifier from "warmage edge:... Whenever a warmage casts a spell that deals hit point damage, he adds his intelligence bonus (if any) to the amount of damage dealt...." (Miniatures Handbook, 15). Will the spell stored in the weapon retain the damage bonus?