Now I wish I'd have recorded all the times post Sep 6th patch where bots ate a bolt-action sniper rifle headshot before dying on a SECOND headshot, or no armor bots eating up to 3 bolt-action bodyshots before dropping. Infact I had that happen yesterday atleast 3 times.
I think it's mostly an issue with bolt-actions at the moment though, haven't seen any hitreg problems on any other guns.
It's much better since the 9/6 patch, but still there. I have one hit heavy armored guys in the torso with sniper rifles since that update and it felt really good. Had a couple of servers that ran like a dream and today it seems to be slipping back. Have had center mass and head shots not registering today. Yesterday I ran sniper all day and it was glorious. 90/100 hits registered.