Spectre, I've found that most of my guns will out-shoot me. They'll shoot more accurately than allowed by my shooting ability.
Nice having a gun that'll do that, huh?!? And to think that you didn't have to spend thousands for it......
I don't think that the caliber has much to do with it, either. A .40 will shoot like a .45 or a 9, depending on how well you do your part.
Looks like you're doing your part. Congrats!