All I know is that, due to either their personal dwell preferences, or the new Warped/JT barrels, their guns are louder than a typical setup (i.e. boomstick). 'lanche Angels make a pretty loud "pop" when they fire.
As far as their guns shooting farther, it's the magic pixie dust that Rocky sprinkles on each and every Avalanche marker. That's what makes them "team" guns.
Actually, if anybody thinks one Angel shooting at 300fps will go farther than another Angel shooting at 300fps, I've got some beachfront property in Utah that I can sell you