is a 3-4 pound trigger pull too light for carry? what's your preference?

I myself think it is too light and lets just say something happened, what do you think a Judge may say, Dirty Harry. L/Es service/sidearm don't have (not aloud) light triggers.

For carry, I feel that a 4 pound trigger pull is the minimum. Anything under 4 pounds is probably too light. Your trigger pull will gradually become lighter with use due to wear and tear. This is especially true if you put a lot of rounds though your gun. I got quite a few incidents with 1911 style handguns with trigger pulls between 3 to 3.25 pounds. After a sear was allowed to worn beyond certain point (will not give figures here), the hammer would drop when the slide closes even if your trigger finger is not on the trigger. If you're unlucky, the gun will fire as the hammer drops and it could go full auto on you without you pulling the trigger! The shortest time I worn out a 3 pound 1911 trigger mechanism is around 8 to 10 weeks. I don't expect average shooters to wear out any trigger this fast though; I put a minimum of 200 rounds per day through my 1911 during that period of time. A 3.5 pound trigger will last me much longer and I've yet to wear out a 4 pound trigger. Generally speaking, your trigger finger won't detect trigger pull changes since everything happened very gradually. By the time you actually felt that your trigger pull became too light, your gun was quite dangerous already.

You don't have to worry about a gun going full auto on you if you carry a revolver. However, you'll never know how your body would react under highly stressful dire situations unless you're already in it. It is not uncommon for one to grip his fingers without even knowing when nervous. The pressure increase by your fingers might be very slight. If you have a very light, crisp trigger, that slight increase in pressure could be sufficient to cause an accidental discharge. Stick with 4 to 4.5 pound trigger pulls because the trigger mechanism will last you a lot longer. Your finger will be able to detect weights heavier than 4 pounds much better than lighter weights, thus reducing the chances of accidental discharges.

http://www.youtube.com/watch?v=5Ez34Kg86AU

See the link....3-4 pounds of trigger pull might be OK for competition, but more than that seems to be the norm.

2-1/2 to three (3*) is my preference.*

that's just fine. i've never heard of a gun with that heavy a trigger going off accidently