Hello Folks:
Been shooting S&W for over 50 years, as well as Colt & Ruger to name a few, let me say this, nothing stays the same, nothing, loyalty to their customers, much like loyatily to there employees, is a thing of the past.
38 Super in 357
OK my take: First, you can shot 38 Super [all USA brands] in any Ruger. Second, you can shot some brands of 38 super in some Colts and some S&W models. Never in ANY 38 period, it's a pressure thing, unless your just born stupid. Now for those who want to know why all Ruger's...
M&P recoil springs
I've had the same issue my M&P40 has a blue spring and the
M&P357 has a green. I'm not the brightest bulb out there but I feel a difference. I used a home made spring gauge to see how much, granted my way of testing is hardly scientific, but there is a difference. Just to add...