Sights on new gun

[symbiont7]

So I took my wife's new Glock 19 to the range today to compare it to my P229 .40. I wanted to see if the .40 was really that much more snappy compared to the 9mm like I read.

I shot her Glock MUCH more accurate (at about 15 yards). I get home, start cleaning, and notice my 229 has the rear sights set a bit off to the left of center. Maybe around 3mm.

Both guns are new, and I'm new to shooting in general, and never really paid close attention before. I've only been to the range half a dozen times, and figured I just needed more practice. Now I'm wondering if the sights aren't off.

So does the factory sight in a gun at all? Or is that something I really need to do?

[DefensiveCarry.com]

[falcon1]

My experience has been that adjustable sights come from the factory "centered." Any number of things might have caused those on your SIG to have drifted off somewhat. Now that you've identified it, you'll probably shoot the SIG as accurately as the Glock.