what is your go to ammo? the ammo you use the most of? and where do you get it from. my first ammo order was iron ore pellets from ebay. i would say it was good to learn on. it was easy to learn muscle memory. the ammo is inconstant in size and weight and i can really tell a difference now.Most say tbg lasts longer but I find tbb lasts at least as long as tbg for me. It's all about finding the right band/ammo combo.