trigger pull

I only have about 650 rds. through my new 4.25" Prodigy. I was expecting the trigger pull to be upwards of 4 to 5 lbs. being new, based on various reviews I read. I bought a Lyman digital trigger pull gauge to check it. I was surprised it was under 3 lbs. So what's the problem then? My plan...

So I want to upgrade my hellcat to the apex trigger but was cautioned that the new trigger shouldn't have a pull much less than factory specifications if I were to use it as a personal defense weapon. Anyone know the specs on factory trigger pull weight? Looks like all the research I've done...