I recently bought a 637 from a LGS. I e-mailed S&W with a simple question and found info on their website. Can someone shed some light on this for me? The website says +P and the e-mail says no +P.
I believe you are getting the lawyer version of the company line, and a lot depends on the DOB of your 37. The newer ones are marked +P on the barrel, older ones do not have this designation.
My 442 is not marked +P, but I usually shoot 10 to 15 rounds per year just to keep in practice. Its DOB is 1992 and no damage to date.