mithriel?
In the meantime, your ribcage has been turned to jelly.
While on Hill 55 SW of DaNang, we had a Marine in our Company who took a sniper round in the back while wearing the old ballistic nylon & ceramic plate flak jacket. The hit was just above the plates and the nose of the bullet penetrated the ballistic nylon layers. He ended up with a bruise and a pimple sized puncture wound. I’m not sure if he even qualified for a Purple Heart!
BTW, that sniper may have been one that Carlos Hathcock took out.
Once hit, though, the impinged armor needs to be replaced as follow-on shots may very well penetrate.
One video, 20 years ago, had a 44 magnum fired against a vest. The shooter, who fired into his own vest, loaded up with phone books to absorb the impact. The impact can’t be ignored.