Sellier and bellot makes 410ga 3" 00-buckshot (5-pellets), as for 3" slugs, lots of makers i recall, but federal makes the HEAVIEST slug, in 2.5" though, at 110gr.
Any help?
C-
Brenneke originals for sure, possible the KO slugs in 3"! www.brennekeusa.com
Now, as for who sells them... please let me know!
Carl
.410 gauge Load Magnum Size 3" Barrel Smooth only Slug wt. 1/4 oz Velocity 1755 fps/muzzle Energy 781 ft lbs./muzzle Application Highly accurate, excellent penetration. For small game and varmints.