The standard rate for 4506 is 14lbs. Standard for the 4006 is 17lbs.
If I cannot find anything, I’ll stick with 17 for the 4006 Limited. Or maybe I’ll try drawing slides back and see if I can tell any difference?!
Here is what I will NOT do: contact S&W.
I’ll send one of our dozen different Florida guys to go find Paul Liebenberg and ask him!