Greeting's jamxc,
I can't answer most of your question's regarding the
Smith & Wesson model 686; but I will share this with
you. I own a 6" barrel 686-5, (you know the one that
is suppose to have the "beefed up" internal's in order
to with stand hotter load's); and it is one of the most
accurate revolver's that I have ever owned, and there
has been plenty! Most consumer's don't like the frame
mounted or "floating firing pin", and the use of MIM
part's. I can certainly agree on the use of MIM part's,
as I perfer the "case hardened" trigger's and hammer's
much better; but you know, I kind'a like the use of the
frame mounted "floating firing pin". In all probability,
if S&W had came out with this feature back in about
1935, all rumbling's and grumbling's would not have
existed!
Oh! by the way before I forget, my Smith & Wesson
686-5 is a six-shot version; as I don't care for the
seven shot model! Just my preference, you know?
Best Wishes,
Ala Dan, N.R.A. Life Member