Thread: They don't make like they used to.... thank goodness !!!!

Originally Posted by veitnamcam

3 threads (depending on pitch and other stuff) is all that is needed for maximum strength (tensile) in theory, also a 25% reduction in thread height from the tops and bottoms of the thread only results in a 9% reduction in strength.'
That said the main consideration of a barrel threaded into an action is not thread strength....

The thread pictured sure is an interesting one....looks to me like the one thread has been turned at not one but two pitches close to the same and as the pitches diverge less thread is left.

Yup that's close to what I know bout threads-60% of the thread is 90% of the strength etc.
I was thinking the same thing about the thread-it looks like it was the wrong thread pitch by maybe 1 tpi