According to the official story, Kirk got shot in the front of his neck with a .30-06 round from a Mauser rifle with a scope and that the bullet got lodged in his spine. So no exit wound. Take her word for what it is worth, but Candace Owens claims she has seen the footage from the camera that was right behind Kirk and that there was no exit wound. There are video angles from the crowd from behind and to the side of Kirk and you can't see any exit wound in those either.
The odds that a .30-06 round, regardless of the grain, hits a human neck from a shallow angle and doesn't come out somewhere are extremely rare. Like comically rare. That bullet moves at 2500 to 3000 feet per second. In reality, the bullet would have either sped through his neck and blown a hole out the back or it would have expanded/tumbled once it made contact and basically decapitated him, turning that entire tent solid red. While still also probably exiting his body somewhere. Somehow, neither of those things happened. The MAGA faithful are saying the surgeon told them Charlie had God-tier level bones that stopped the bullet. Anyone with half a brain who doesn't believe in Jesus inspired vertebrae is having some legitimate doubts that Kirk got shot from the front with that caliber of bullet from the gun they found. These rounds go through cinder blocks, metal plates, explode watermelons and ballistic test dummy heads, but this round somehow just made a hole and then stopped at Kirk's spine.
For a bit of context, remember the goofy kid who took a shot at Trump in Butler, PA? Thomas Crooks? The Secret Service sniper who killed him shot him with a .30 cal bullet. Crooks had FIVE gunshot wounds from that one bullet. An entry wound, an exit wound, a re-entry wound, and two more corresponding partial re-exit wounds. And Crooks was shot in the head, which last time I checked was made out of bone, unlike the human neck.
Specifically in regards to your question, yes, there are special subsonic .30-06 rounds. It's still a very large bullet moving well over 1000 fps which would do a catastrophic amount of damage. Plus, from the videos at the event, the shot is extremely loud. It sounds supersonic. Just moseying around YT I found this video of a guy shooting subsonic .30-06 rounds he loaded himself. It sounds a lot more quiet than the shot that killed Kirk.
https://youtu.be/D_ohu1DfX-s?t=186
TL;DR? There was no exit wound. Yes, there are subsonic .30-06 rounds but they're not standard and it's unlikely Robinson used one. Bullets do funny things sometimes so there doesn't absolutely have to be an exit wound. However, it's extremely unlikely, and the claim from the TPUSA goon that the surgeon told him there was no exit wound because of Kirk's bones being denser than a neutron star is laughable. Also, completely disregard this post because you're not supposed to question the official narrative in this thread. It upsets the powers that be. Kirk got shot in the neck and they got the bad guy. End of story.