Semisane
They are real close, that's why I did not say any thing. On an unfired new breach plug for the Triumph a .30 pin gives a slip fit so I would say about .0325 of course after it fired a few times it may open up a bit. The breach plug in the Triumph has had about 25 or 30 pounds of powder through it and it is enlarged some when I put them side by side. It still is precision shooting so it will not be fixed. Lee