This will handle all sorts of ammo. Slugs, birdshot, 3 inch shells, 2.5 inch shells, pretty much whatever you throw at it it'll function with. Hope this helps.

Ted, what works best depends on what you are using it for. It will handle any 2 1/2" or 3" shells, whether they be birdshot, buckshot, or slugs. For home defense, I keep mine loaded with Hornady Critical Defense .410 Triple Defense, which is a slug and two 35 caliber roundballs. budsgunshop.com/product_info.php/products_id/84263/hornady+critical+defense+410+ga++fxt+slug+with+flex+tip+20rd+box ....For target shooting, I use whatever birdshot I can get my hands on, it's pretty scarce right now. Have a great day!

Ted, most standard 3 inch and 2.5 inch new .410 ammo works fine out of the Shockwave. Remington, Winchester, Fiocchi etc all work fine. For self defense : budsgunshop.com/product_info.php/products_id/70894/win++supreme+elite+pdx1+410+ga+3+(4)+defense+disc+(16)platted+#bb++10rd+box --------------- budsgunshop.com/product_info.php/products_id/713073246/brenneke+usa+410+ga45+lc+3+classic+slug+5rd+box