I ended up finding an Ithaca M3A1 for the right price in just a couple days, and went ahead and bought. I was holding out for a Guide Lamp, but this gun was the right price, and I like that it has a worn finish, but has NOT been refinished.
Anyways, two questions
1. What is the best factory ammo to run in this gun? I want to run what others do with good luck, and it's always a good time to stock up. I do not reload, and just want to buy what is recommended. I was told by the seller that hot ammo with hard primers is good. Typical of older open bolt subguns I've noticed.
2. What springs should I put in the gun? I keep hearing people talk about springs with these guns, so I want to be sure to put in a nice new spring, and also grab some spares.