Spell Cartridges vs Shield Spell

[Reduxist]

Spell Cartridges lets you fire force bullets, which can technically be considered magical missiles. The spell “Shield” explicitly blocks the spell Magic Missile, which casts force bullets. I get that the wording is exact on Shield, but I’m concerned that the technicalities of it can block an entire feat.

[Java Man]

If shield was meant to block ranged force attacks it would say that, but it says it blocks magic missile spells. Nothing else. Not spell cartridges, not battering blasts, not blade barrier, not +1 arrows (which are magic and missile attacks....).

If anyone tries to tell you the shield spell stops spell cartridges then ask about the rest of my list.

[Pizza Lord]

Magic missiles are force missiles (missiles made of force), but not all force missiles are magic missiles. Shield stops magic missiles. Magic missiles are almost exclusively created by the magic missile spell.

Just being a force missile does not make it a magic missile. In order to be considered a magic missile, the description would have to be relatively clear that it functions as one. For instance, magic missile storm (a 3rd party spell by Orphaned Bookworm Productions, but as an example) says that the missiles work as magic missiles. Or the spell has to clearly be a variation on magic missile, such as magic missile, greater spell or an invisible magic missile spell that was basically magic missile with some altered property (other than a property that said shield didn't stop them).

Spell cartridges fire force bullets but they aren't magic missiles just like a kineticist's force blasts aren't magic missiles.
An Evoker (Evocation specialist) has Force Missile.

Force Missile wrote:

As a standard action you can unleash a force missile that automatically strikes a foe, as magic missile. The force missile deals 1d4 points of damage plus the damage from your intense spells evocation power. This is a force effect. You can use this ability a number of times per day equal to 3 + your Intelligence modifier.

While it specifies 'magic missile' it's only in the manner of how the force missile hits automatically. It doesn't say it otherwise shares properties or is a magic missile. A dog could grab you with a vise-like grip, but it's not a vise and spells that affect vises won't work on the dog, nor will it trigger a contingency set to go off it you're ever caught in a vise.

[Azothath]

Shield:A[force]1 specifically mentions magic missile spell.
Abltv Barrier:C[force]3 just mentions damage.
Spell Cartridges feat Prereq's: Arcane Strike, ability to cast arcane spells, prof with firearms. Technically it should say [force] or force effect but it is pretty clear. It is not magic missile spell.
Spell Descriptors (under Designing Spells) scroll down to Force.

[Derklord]

"It negates magic missile attacks directed at you. The disk also provides a +4 shield bonus to AC."

In Pathfinder rules, cursive indicates a spell name. That means the only thin affected by that line in the Shield spell description is the spell "magic missile" and things that explicitly imitate/function as the spell.