Charlie,

How did he measure the head space?

The out of round chamber obviated by the fact that the brass wouldn't go back in except one way is bad and will require replacement. Thompson Center has a lifetime warrantee that will cover this.

There is no ejector in an Encore unless you special order it. Maybe you mean extractor?

Flattened primers can be caused by many, many factors (most of which are red flags)... Be careful of drawing conclusions from them.

$bob$