Even concerning the law, doesn't really matter what the trigger pull is. If my life is on the line, I'll take a day in court over regretting that a family member is dead any day of the week. I believe even with a 2.5# pull, you could be cleared in court. But thats just me.
I never had a pistol over 3#'s, and rifles, for me anyway, are more precision than the pistol necesitating at least half that shaved off. I prefer rifles measured in ounces not pounds. You can imagine my frustration when I got to the military and faced 6# pull on the M-16. I FREAKED cus I couldn't hit a thing. Then I qualified on the M-9, after going twice through the course, because all my first pulls were flyers. I've never been able to get used to the overly high pull weight. I am way less accurate, always pulling the first round, which to me, is much more dangerous especially in defensive actions.