M1 Garand En Bloc with Dummy Cartridges.

[browningautorifle]

two out of the three needed to be popped out of the chamber with a cleaning rod.

Lots of our drill rounds took a beating. Before I started a class I tested my drill rounds for fit and if they gave issues, I ran them through a sizing die without decapping pin... Then none stuck in chambers. It's the nature of the thing. Those were meant to be functioned through weapons. They're just out of shape.

. So I'm guessing the answer depends on how high the anvil protrudes

Yup.