[CarbineCaleb]

I find about a 30% advantage in group size with a 6" versus a 4" barreled revolver, just as you would expect from the sight radius improvement. Furthermore, so long as you are comfortable with the mass, a long, heavier barrel will jiggle slightly less due to its greater inertia.

There are those who say they can shoot short barelled pistols just as well as long, and maybe that's true. In any case, you won't find very many competitive shooters using them, and competitions that restrict firearm specs, restrict length, not shortness.

For primarily target, IMHO there is only one choice - the 6-inch.