guns in vacuum (was Re: Near Future Rules Draft is up!)

Mark Andrew Siefert writes:

@:) Because conventional firearms woundn't operate in a vaccum

  Why not?  As far as I know bullets work fine in a vacuum.  Cartridge
propellants contain their own oxidizers.

  As a side note, in the Buck Rogers Battle for the 25th Century
computer RPGs, in which all the characters carry laser pistols and
such, Buck himself has a "Gun" - apparently his vintage 1990s-era
.45.  He always seemed a lot more deadly than my laser-pistol guys.

-joachim