Thread: Variables affecting precision

I think the firearm part of this accuracy equation is a separate issue, as in separate to the ammuntion factors. overall precision shooting (the ability to deliver a projectile to the intended target, or the ability to delivery multiple projectiles to the same given point) can be broken down into.
1: External influences, such as wind, mirage, etc
2: Shooter ability
3: The firearms accuracy potential
4: The ammunition
In the diagram above the firearm and the ammunition are lumped together. Would it not be better to take the delivery system, the firearm, out of this and treat it separately.