OK, I have a gun almost done. Doing test firing the last couple of days at short distance, just to make sure everything is copacetic, and I find that it pretty consistently shoots left about 3 inches. I've already got the rear sight slightly to the right, and the front sight is ever so slightly to the left, and I really don't want to move the sights anymore (plus, it would make me have to shove my face into the stock hard to line up with the off-to-the-right sight, and I can't do that. The cheekpiece/comb is as far over as it can possibly go). So, it seems I have two options. One, bend the barrel. I have bent a smoothbore barrel once, and can do it, but I would prefer to avoid that procedure. Two, filing the muzzle, which seems to be the simplest thing to do. Never done that. Well, I've cut off muzzles and recrowned them, but not to shift impact. Now, just so that I make sure I'm doing it the right way, I ask those who have done it, I file off towards the direction I want the ball to go, correct?