what is the perfect length?
I guess everyone has a different solution to that question. I don't carry so that is not a factor for me, I use mine mainly for hunting and long range target shooting. I find that a 7" works for me on my single action hunting 44's. Easy to hold offhand, very accurate and easy to carry when working my way thru the brush or pines without it getting in the way. But for strictly accuracy and long range shooting, a 10" is the way to go. I guess though for what you are wanting, a 4" or 6" would be ideal, too short and it's harder to shoot when you're out trying to hit a distant target, if it's only for casual plinking and mostly concealed carry, a 4" would be max and a 3" would fit better when you're sitting and not jabbing you in the side or hip.. I think you gotta stuff one down your pants, shoot some targets and hold it out there to be able to decide which feels right to you.