Magical ammunition for a specially made firearm.   The effects of the ammunition is based on the spells that have been imbued into the cartridge.     A metallic casing containing a gem which can contain and release a spell. Each shot can be recharged, by casting that spell into the gem focus, it takes material components, 1 hour per spell slot expended, and the required spell slot; however cantrip spell shots will recharge on their own after ten minutes without any extra input. Spells must be instantaneous in duration (exceptions exist), must be "targetable" (ie. single target, cone, line, AOE), all multi-targeted spells hit the same target (ie. scorching ray, magic missile, etc.), and verify with DM that yes you can make this or that you can use a spell not on this list. Must make a ranged attack roll to hit your target.   The spell saves for an activated spell are based off of the Casters' stats at the time the spell shot was last recharged. If aided by another caster they can infuse one of their spells and spell slots. Charging an upcasted spell requires 1x more the consumed material components per spell slot above its original.