Hi all, I have recently acquired a Stainless S&W Model 66-4 with a 4” barrel. Anybody know how to find its birth date? The serial number is CAE 1XXX. Is it safe to shoot 125 grain .357’s through it? As I researched the gun, I ran across several warnings about shooting 125 grain .357’s through Model 19’s. I don’t know if it applies to model 66-4 or not. Thank you in advance for your help.