Sam and Bucky didn't seem to be throwing the shield at full strength while they were talking. It almost seemed kind of like a game of catch, but with the shield instead of a baseball. But when Sam was training with the shield, he was throwing it at full strength, and that thing can really move when it's got some momentum behind it.I was a little confused with Sam's skill with the shield. While he was throwing it around with Bucky he caught it fine, but then when he was by himself he suddenly kept missing it.