u/Home-Made-Pyro

Hello, 

I am currently designing a shell pasting machine for 2-6" ball shells. 

Because i want it to keep it rather cheap and small i wanted to ask what shell sizes you guys use the most (so i can  optimise it for  the most people).

For me it's 3-4 inc but I want to get a general overview of what is used most... 

(If you got any special ideas or wishes, feel free to tell me; I want to produce a high-quality "product.")

I’m planning to build multi‑brake or single‑break shells that accommodate smaller inserts. I’m unsure which shell size to use and therefore what mortar to buy. I’m considering 4‑inch or 5‑inch shells.

Could anyone outline the pros and cons of each size and help me decide?