There are 2 Wolff spring configurations for the Mag 10, reduced power and extra power. Looks like OG bought the extra power.... This will work just fine with turkey loads, that's what it is for. While it will certainly drive the bolt home with authority, the real benefit is in felt recoil and in slowing the bolt down a little so it doesn't beat up the back of your gun, and crack your bolt buffer. Well, you really can't prevent the bolt buffer from breaking after a while, but it will help with rearward bolt speed. I think the small spring is the extra power trigger spring. Not sure that does anything worth while - except maybe slow the bolt fractionally more rearward as it is harder to cock back the hammer.
Ducks