Mt LMT and both of my BCM’s will leave a small mark on the primer after the round has been chambered. This is why once a round has been chambered I move it to the training ammo bin.
Doc Roberts did a write-up on Hornady TAP ammo and a LE Agency having a FTF on a SWAT entry (I think it was on 10-8). Fortunately it did not result in an officer injury/ death. I’ll try to locate the article.
IIRC the FTF was caused because the FP did not set off the primer when fired because it had been indented after several re-chamberings. After Doc’s article I quit rechambering rounds and just rotate in a new round.
FWIW I have not had a FTF when shooting the ammo I have removed after rechambering, but why risk it. Murphy seems to love me so I do what I can to keep the “oh shit’s” to a minimum.