Perhaps you should look and see who's shooting what in USPSA and IDPA production classes? Ever watch a good revolver shooter? Seems a 7#DA pull doesn't hamper their success.
There's an old saying, "It ain't the arrow, it's the Indian"
Working to improve one's technique will be a significantly more beneficial endeavor for long term shooting success than reducing trigger pull in hopes of masking shooter error
I'll bump that a little further down the road...top shooters tend to have really good hand/arm strength.
Ever shake Jerry Miculek's hand?? He's got a Solid Grip.
Muscular control is a big part of being a good shooter...if you have serious strength,
it makes a lot of things easier to control...from the trigger, to the grip,
to making recoil easier to deal with & recovering from recoil quicker.
Everyone wants to do fingertip pushups...but you have to work your way up to them
Start with an Eagle Claw exerciser...
http://www.amazon.com/TMAS-Eagle-Catcher/dp/B0000CA2P6
After a few months, your grip will be in the "Crusher" range...
To get yourself to Fingertip Pushup level...
get into the position, raised up and on your fingertips...then just ease yourself down slowly.
You are unlikely to be able to get back up with perfect form...but that's ok, its not the point yet...
just keep doing the Down portion,
and attempting the up...every day...every week add 5 more downs...
eventually, you'll find yourself being able to go up cleanly once...then twice...then three times...
"Just keep swimming, Just keep swimming..." hehehe
Kinda like doing pullups...do a lotta downs, eventually you can do ups...just never give up!!