I’m having a zero issue with my S&W M&P 340. It’s the model with the factory XS Big Dot Front sight and Laser grips.
I purchased this weapon from a S&W Law Enforcement dealer with the intention of getting it approved for duty use as a back-up weapon to replace my S&W 642.
The M&P revolver functions and groups fine, however. at 7, 15 and 25 yards it consistently hits to the right / 3 o’clock. The group moves further to the right as the distance increases. Approximately 3” at 7 yards, 6 “ at 15 yards , 8-10” at 25 yards etc.
The first time I fired the 340 I used Remington lead free Frangible . I thought the zero issue might have been the lead free ammo so tried with our duty round, CCI/Speer 135 grain +P .38 special as well as Remington and Winchester standard velocity 130 grain FMJ .38 special.
To eliminate the possibility this was shooter error, I shot the same ammunition through my S&W 642. The groups were centered with all three types of ammunition. I then tried dry fire with the laser grips and saw no pronounced movement to the right. Finally I had another experienced shooter/ Firearms Instructor shoot the 340 – all rounds were to the right for the second shooter as well.
I contacted S&W customer Service, they sent me a fed ex label and the 340 went back to S&W. A few weeks later the 340 was returned. the work order read : “Customer Complaint – Barrel Frame Line-Up” and “ Repaired Adjust Barrel Alignment.”
I took the 340 out to the range last Friday and it is still hitting consistently to the right with CCI/Speer 135 grain +P . I again had a second experienced shooter fire the weapon and again all rounds were to the right for the second shooter as well as myself. The barrel / front sight appeared to be centered.
S&W is sending another Fed Ex label but any thoughts / suggestions on cause and possible solutions would be appreciated.