Got some!

[Will Burn Powder]

Looking for a box or two Of 410 shells to play with in a derringer anybody want to part with some? 
2.5” must prefer shot but would consider buckshot loads. 
pocket gun fun  

[Rooster Ron Wayne]

You would be better off buying some used hulls and loading your own .

Finding 410 shells is like finding Hens Teeth .

[Big Hand Zack]

I just ordered 100 410 shells from sgammo.com about a week or so ago. You may want to sign up for his email notifications. He gets new ammo weekly. I have bought from SG for years now, and he's always pretty reasonable.