M&p.40 sight in dealy.

[Kc.338Lp]

Hey there everyone , just had a interesting question , well interesting to me lol .

I just took my brand new m&p 40 out this weekend and tried 3 different types of ammo from a bench rest position with a sandbag so i know what happened was not my trigger pull.

Anyway i did 3 sets of 5 shots each from a rest and then 10 standing (time got cut short , family issue) .

First 5 shots all grouped about 1 1/2" inches a nice little circle in the low right area , i figured it was me , so i shot the next five aiming center mass of target again just like before and the group laid right over the last one . So with the next 5 , i moved my sights left and to the top of the target and sure enough they were near dead center .

Question , I notice these sights only move back and forth horizontally . But they Dont seem to want to budge.. is there a special tool thats needed ?

 

[enefgee]

Yup, there are sight adjustment tools, try Brownell's - also the rear sight set screw is a 2mm and it's loc-tited. If you don't loosen the set screw, the rear sight will not move.

 

[agilent_one]

I just took my brand new m&p 40 out this weekend and tried 3 different types of ammo from a bench rest position with a sandbag so i know what happened was not my trigger pull.

I'd still wager it's your trigger pull. A bench rest and sandbag won't absolve all your "sins".

 

[enefgee]

I'd still wager it's your trigger pull. A bench rest and sandbag won't absolve all your "sins".

Good point, I certainly wouldn't "adjust" anything until after the trigger is broken in (1,000 rounds) and I was absolutely certain it wasn't me. Have someone watch you shoot standing unsupported, and do the "ball and dummy" drill.

 

[Kc.338Lp]

I'd still wager it's your trigger pull. A bench rest and sandbag won't absolve all your "sins".

Kind of impossible to be dropping the front of my barrel if has no where to go ?

 

[agilent_one]

Kind of impossible to be dropping the front of my barrel if has no where to go ?

Perhaps.

Have a buddy shoot it, if he experiences the same shenanigans - you may have a case. Try the least expensive fix first. I found this out through experience, a 226 that shot low-left - after I had bought the sight push and a couple other doo-hickeys.

 

[Kc.338Lp]

Ok , yeah because i was going to say quite a few people have seen me shoot and they all say my motions are quite smooth even for a beginner.

All 3 sets of 5 on the first target sitting at benchrest were slow creep until break shots and they all grouped in the same place .

But ill put another 200 - 250 through it this weekend and see what happens.