a Controlled Test in a single Session
Paramaters: Secluded Area, No Zombies, 1 Vehicle, Constant Sunny Weather, Frozen Time
Dedicated Server w/ 12GB RAM

Average FPS Before: 170-180

500 Bullets In Inventory Average FPS: 170-175
500 Bullets In Car Trunk Average FPS: 66
500 Bullets When Being Moved into Car Trunk Average FPS: 108


1000 Bullets In Inventory Average FPS: 168-170
1000 Bullets In Car Trunk Average FPS: 167

2000 Bullets In Inventory Average FPS: 156
2000 Bullets In Car Trunk Average FPS: 152

3000 Bullets In Inventory Average FPS: 145
3000 Bullets In Car Trunk Average FPS: 143
3000 Bullets When Being Moved into Car Trunk Average FPS: 10-20 (Got Progressively Worse the More that Were added)

Notes: Server Side performance was effected by having 3000 bullets in a Car. When moved to the client's side, performance was a lot more stable.
Memory usage and CPU utilization on the server did not go up when the ammo was spawned in or moved.