Personally, IMTU (vary, vary different then anyone else's, no personal laser weapons, no gauss weapons, no plasma or fusion guns), the Imperial Navy actually has a standard issue service revolver.
Essentially, since the ruleset I use has any automatic or semiautomatic firearm jamming about 10 percent of the time in a vacuum, (which is what all boarding actions take place in IMTU), a revolver makes a lot of sense in the backup-weapon-that-won't-jam role.
It's based off the .455 Webley IV (same caliber, top break open), double action, issued both with speedloaders and loose rounds (to speed up reloading), and has the power of a .357 magnum. With the armor piercing hardcore rounds, anyway. It also takes the same rounds as the Navy's standard issue SMG, 9mm muzzle energy but with a HEAP shaped charge warhead. Those pack a punch, they'll go through your armor and they can kill you.
After my character ran out of rounds in the gun with one more enemy standing, though, if he ever gets enough money, he's getting one made with a few extra chambers.
Swords are pretty much for show, although they are real, and you can put it through body armor with enough effort behind it.