I agree with the three shot spread, I want a shotgun for the pattern, not a single shot. As for picking up the shells, if you get 30 rnds per shell, you'll only need the three original shells. I like limiting round count, just do a tactical reload (and retain the spent shell).
I looked at the harballers and it looks cheesie. I've been looking around, JT only had the SPAS and Harballer. Want an economical gun, preferably a springer.