Weak side shotgun shooting, in the dark, on fire, naked.

[farscott]

Also....switch shouldering the 870/590 type guns is a super-awesome way to short stroke them causing a far greater issue than rolling out........just an observation from the peanut gallery.

Yup, I have done this one myself as I am right-handed and left-eye dominant. Learning to run an 870 from my left shoulder was not fun. It made me REALLY appreciate the Flexitab feature that Remington added to the 870. And that was after who knows how many rounds from the left shoulder on the trap range with my 870TB just to get the basics. Nothing like a little stress to show where the issues are, such as my left thumb being appreciably shorter than my right thumb means reloading is a wee bit different.