Hi Kevin. Thanks for your kind words. As a fellow lefty, I know that finding a decent left handed gun isnt easy so well done on that front!

Scope wise, I would personally recommend the 4-14x40 EV with the adjustable objective lens. If you can get clearance above the magazine on the 410, go for medium mounts as you really want the scope mounted as low as possible. Best way is to take the gun into a gunshop stocking the Panorama scopes and to try with medium mounts.

When using the scope, try to maintain a consistent head position on the stock as this will reduce the liklehood of parallax error. If needs be, use a "pigs ear" scope extension. You will then have yourself a setup that is more than capable in the field. I would also recommend 8-9 mag and setting the objective to 30 yards.

The none AO Panorama would require you adjusting the objective lens yourself, voiding your warranty.

Enjoy your shooting!

Andy