If you were anywhere near me NXT, i have a remington youth 870 with a sumtoy turkey choke tube, it will shoot 3" 20ga shells,..i have a few custom nitro rounds of #7 tungsten, it is very deadly to 40y. You would be most welcome to borrow it.

Im curious how your 410 patterns and at what yardage you patterned it..

Good luck to you!