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S&W M&P 40 to .357Sig Storm Lake barrel...will my sights require adjustment?
Thinking of picking up a Storm Lake .357 Sig ported barrel for nothing more then shits and giggles, if I ever feel froggy and want to shoot .357Sig I'll have the ability.
That said, I have seen it posted elsewhere that the same sight parts numbers are given for the fullsize pistols from S&W...how does this NOT create a POI shift between the different calibers as muzzle velocity is different for each? Is it simply negligible?
So I suppose my question is, if I use a .357 Sig barrel in my M&P40FS will the bullets go where I point them?
Thanks for any help you can lend me!
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Mechanically, a different barrel, means a difference in unlocking, recoil, and re-locking.
Whether or not it is a SIGNIFICANT enough difference to induce a change in POI/POA, you will not know until you start putting rounds down range.
My guess, is that it wont be much of a difference that would require any significant hold over/under..
Last edited by Derek_Connor; 07-19-09 at 15:34.
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