I saw a rifle that looked very similar to this one a few years ago. Seems the shooter and his son were sighting in their rifles. The boy shot a 35 Remington and the old man a 30-06. Seems dad had his head up his butt and chambered a 35 Remington shell in the 30-06. Big bang! The brass fits but the bullet doesn't. This looks to be a similar case or an obstruction in the barrel.
[&o]