I have a LOT of handguns, and it's very common for me to shoot a new gun low and right. I'm left handed, so for most folks that would be low and left.
This usually self corrects quickly as I get used to the gun, so I leave the sights alone untill I'm SURE they are off.
How many threads have I seen where "the gun" shoots low and left? Then later, it's the shooter.
One of our human frailities is the inability to admit to our other human frailities.