391s, SBIIs and Cordobas and if you really want to practice as well as bundle or flock shoot Citoris and Silver Pigeons will do just fine. But in the evening you need to have a mate with the bird boys and either instruct them on how you want you longarm cleaned or show them. Typically they want to dip it in a solution and run it near a grinding wheel or brush. If you've volume shooting with doubles, disengage the auto-safety, ejectors and forget about the tube selector. You'll wear you thumb out on it.
If you want some ground truth on the number of birds, tell the bird boy to be conservative or find your best critic in the group and have him/her to talley birds for an hour to see what your rate is. But all the volume depends on the flow of birds. If their flight pattern doesn't really materialize early on, you are wasn't cartridges if you are trying to get on a board.
Kind Regards,
Raimey
rse
