I agree completely that regulation will most likely be an issue. I have a petite little .410 double that patterns both barrels fine. I thought it would be neat to have a little double rifle to shoot small game with in the heavy stuff. I bought several brands of .410 slugs and put up a target at 25 yards to see how close the barrels were regulated. They would not hit in an 8" cirle at 25 yards and what was worse was that they were off on opposite sides of it and with terible vertical differences as well! Had they been regulated by the whim of the gods, then I guess some rifled chokes might have made them more effective. If I had access to 100 of these doubles I might find one that was by chance regulated.

John