Shotgunlover,
What kind of bead do you have on your guns? You definitely do NOT want any kind of fluorescent bead - these really draw your eye. If your gun fits well then I would either just put on a very small silver bead, such as a mid bead, on the end of the barrel. Or, you could try shooting with no bead on the end of the gun. This will make it less likely that your eyes will be drawn to your barrel. You also need to develop a strong pre shot routine. The last thing you should think about before calling for the bird is the leading edge of the bird. This should become your mantra. While all of your hard focus is on the bird your brain will be aware of your barrel in your peripheral vision. I started shooting 3 position .22 rifle. I still shoot a bit of rifle with scopes and aperture sights and pistol with red dots and open sites. You can do this. I like Lanny Basham's CDs on Mental Management. He discusses how to build a preshot routine. Good luck.
Regards,
Jeff

"We are men of action. Lies do not become us."
Wesley