Federal
The load that makes a .410 a real turkey gun. 13/16 oz of #9 Tungsten Super Shot at ~18 g/cc packs enough downrange pellets to crush a gobbler's head and neck to 40 yards from the tiny bore.
Federal Premium Heavyweight TSS in .410 bore is the load that rewrote what a .410 can do on turkeys. Tungsten Super Shot runs about 18 g/cc, roughly 56 percent denser than lead, so a #9 TSS pellet carries the downrange energy and penetration of a much larger lead pellet. That density is the entire reason a .410, long dismissed as a small-game novelty for turkeys, now patterns lethally to 40 yards. This 3-inch shell drives 13/16 ounce of #9 TSS at 1,100 fps, and through an extra-full .410 turkey choke it prints a dense core that keeps a killing count of pellets on a gobbler's head and neck.
The .410 works for exactly one reason: pellet count. A .410 throws a tiny payload, but because TSS packs so many #9 pellets into that small charge and each pellet hits well above its size, the pattern core stays lethal where a lead .410 would have thinned to nothing by 25 yards. That is what makes an ultralight, near-recoilless .410 a genuine choice for youth hunters, first-time turkey hunters, and anyone who values a gun they can carry all day and shoot without a flinch.
This is the ammunition the Stevens 301 Turkey and other .410 turkey guns are built around. It costs more per shell than a 12-gauge load, but a .410 turkey hunt is a few shells a season. Pattern your specific choke with it before opening day, because a .410 TSS core is only a few inches wide at 40 yards and every shot has to be aimed like a rifle.
Add the Federal Premium Heavyweight TSS .410 Bore (PTSS419F9) to your build and see how it enhances your platform.