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!