Correct nomenclature helps us to understand the problem at hand and then give our best thoughts. You did not have a "bullet" problem. It was the loaded round that did not work, sometimes.
A click-bang is a fairly common problem and usually means the primer is not up to the task of igniting the powder. It is an easy phenomenon to recreate, if you want to. Load a ball powder, "Start" load under a light bullet. with a standard CCI primer. The solution is a Winchester or a magnum primer, more powder, heavier bullet, more crimp.
The primer develops around 10,000 psi. That is enough to put a bullet into the rifling. As happened. Primers are ok.
The IMR powder is not known (to me) as a hard to ignite powder. You have a health dose of powder under a fairly heavy bullet. It should go Bang.
Is your bullet well clear of the rifling? If it is touching, that can cause ignition problems with a full length sized case.
I can only think of 2 likely causes:
-- Very, very light neck tension. Can you push the bullet into the case, by pushing against the bench? If not, your neck tension is adequate.
-- That leaves damp powder. The cases were not adequately dried.
