Trigger Pull weight?

First topic message reminder :

Why is the 22 target pistol allowed to have a 2 1/2 pound trigger pull and the 1911 45 it has to be at 4 pound trigger pull?  Why is a 1911 pistol shooting wadcutters allowed to have a 3 1/2 pound trigger?  What trigger weight due you guys like in your 1911 45? I have a Pardini 22 RF with a 2 1/2 pound trigger pull. I am spoiled. My Dan Wesson Pointman 1911 has a 4.5 pound trigger pull.

CR10X wrote:

Why not make it 2.5 lbs across the board?

Why not make it 4 pounds across the board?  It would probably make a lot of shooters better with the .45; and overall.  Gotta learn how to grip the gun and pull the trigger at the same time anyway.  

Because before the 1950s fewer people used M1911 for BE they shot mostly revolvers for CF , 45 and 22lr. After the war, you could buy a surplus 1911 from a hardware store for under $15 as compared to $90 for a M25. People got creative and made them print. 3.5 is the factory setting for a M25.