If the sized brass fits, it must be a bullet/OAL length issue.
Try seating a bullet deeper. Does the round now chamber without interference? If so, your bullet is into the rifling at 2.25. I wouldn't expect that to be the case but maybe your chosen bullet has an odd profile or you have an unusually short chamber?
Chambering an empty case will not hurt your rifle.
Still happily answering to the call-sign Peetza.
The problem, as you so eloquently put it, is choice.
He is no fool who gives what he can not keep to gain what he can not lose.
-Jim Eliott, paraphrasing Philip Henry.