i've never fired a revolver but hanled some and they feel better in my hand than a semi and i always hear they are better for HD. Ive been researching though and some listed trigger pulls are rediculous "8lbs single action 14 lbs double" "12lbs double 7.5 single" is there anything with like 8 lb da pulls?
I'm pretty fresh from the steep part of the revolver DA learning curve, so I'll take a stab:
The 12 poiund double actions seem pretty typical. I believe the average single action is better than you've listed but that doesn't matter - you're talking HD so you won't get to use SA apart from some bullseye competition and informal shooting. You'd probably be best served to get the SA numbers out of your mind.
All DA triggers, with the exception of the unobtainable ones Old Fuff mentioned, suck. Python DA triggers suck; older M27 DA triggers suck. (I think the "long actions" preceeded model numbers like "M27"). They do suck differently and some prefer Python suckage to M27 suckage. It's a personal thing - you will be encouraged to try all.
It's not the DA trigger (which you'll be doing most all of your HD practice with) that's the problem - it's your trigger finger, grip, et al. It's a zen thing. You'll eventually embrace the suckage, become one with the suckage. I found it's worth it but depending on what you're used to it may prove both lengthy and expensive. If you're old and used to tuned 1911s, it may well prove very lengthy and very expensive (but still worth it, IMHO).
The baggage associated with making the DA trigger acceptable to you rather than vice-versa is heavy. Even more than autoloaders, tuned DA revolvers are fussy, finicky, unreliable single purpose artifacts unsuitable for HD. They'll restrict your participation in internet "revolver love" and "versus" threads - though this last might actually be an advantage. You see, in these threads, autoloaders are made out to be "ammo sensitive" and / or "fussy" and nobody wants to hear that your wheelgun needs specially constructed handloads with primers from a single source of primer elves or that it won't light Fiocchi or S&B. Further, all the mantras recited in such threads get twisted.
"Six for sure" becomes "Six for maybe on the third try".
"Just pull the trigger again" becomes "Just pull the trigger again ... and again, and again."
See where this is going?
Revolvers have much to recommend them for HD but, with minor exceptions, that trigger stays that way. Changing it turns the wheelgun into a slow-to-load, low-capacity autoloader that's fussy about ammo (actually much fussier). Good luck in developing your double action-fu.