Last time I saw a bolt nose filled with brass like that was when a R700 .22-.250 was fired with a steel rod in the barrel. The bullet stopped in the bore. The bolt was spoiled, the bolt nose was cracked. Receiver, stock, etc. were OK. I sent the barreled action back to Remington, they replaced it for $230.
The bolt in the photo with the wrecked receiver is cut for an extractor. I don't think that it is a Remington bolt; there are two gas vent holes in and just behind the head. Bolt body and bolt plug are fluted, so it was either reworked or a replacement. Don't know if it is a Remington receiver either. Might be, might be a clone. Extremely unusual for a 700 type action to be wrecked like that.