I like the 3.5 pound number also. IMHO going for less than 3.0 pounds is bad when combined with cold fingers or high adrenalin.

My CZ 550 in 416 Rigby has a neat set trigger. Standard is at 3.5 pounds upon cocking, then push the trigger forward and it sets to a "target" trigger of 16 ounces. This is wonderful when sighting in a rifle chambered for a "frisky cartridge" at the range --- all you do is think "shoot" and it fires. Short, clean, crisp, and quick --- lovely.

An earlier comment about it depending on what you are hunting making a difference has merit. I know an African PH who had one of his favorite big bore double barrel "stopper guns" set for 8 pounds....

"Don't worry, when that Cape Buffalo is charging hard only 20 feet away and now it is all up to you, you won't feel an 8 pound pull at all. The main thing is that the gun absolutely does not go off for any reason before it is just the right time!"

Good Luck and Good Hunting,
EKM