Thousands upon thousands of deer are killed across the south each year with Buckshot. At 35 yards it is wicked; however, you need to pattern several different shells to see which ones work best. My last shotgun would only pattern Remington buckshot for some reason but it patterned it exceptionally well. I took one large doe at 85 yards with Remington 3.5 inch 000 a couple years ago - penetration all the way to the far ribs.
Did you mean 00? Nobody that I'm aware of makes a 3.5" 000 load. If you meant 00, that load shoots so good because it is actually in a wad. That Rem 3.5" 00 load is the only traditional buckshot load that is in a wad. It shoots good in every 3.5" gun I have tried it in.
