Ultimatley, a firearm is merely a device that facilitates the discharge of ammunition, and what said piece of ammunition said firearm facilitates has a huge impact on the preformance of said weapon. The following is a list of commonly used rounds in New Frontier. (To be completed as Rp progresses)
.37 Shepran Auto- .37 SA
Medium pistol round. Very common.
Heavy pistol round. Common, especially on the frontier. Mostly subsonic.
11mm Pistol Carbine- 11mm PC
Very heavy pistol round. Somewhat common. Only used in carbines and some large hanguns.
6.1 Sub-Compact- 6.1 SC
Pistol round with rifle like dimensions. Not rare, but not terribly common either. Better capable at penetrating armor than other pistol rounds, but less stopping power
Intermediate rifle round. Common.
.219 Varmit-Magnum- .219 VMag
Somewhat smaller intermediate round. Common. Mostly used with hunting rifles, similar leathality and lower recoil, but less stopping power.
Full power rifle round. Fairly common.
.45 Sergus Casless
Medium pistol round. Uncommon on frontier worlds.