Barrel marking

[psychdr]

I came across an M1 recently that had an oversize "T" stamped on the barrel near the drawing number. What does this mean?

[jak]

"T" means the barrel was "targeted"

[psychdr]

Thank You. Now for the obvious. What does targeted refer to?

[TJT]

It was "sighted in" at the armory.
Jon

[Orlando]

common marking, nothing unusual