if i remember corectly there is a ruger ultra light .308 with a barrel split like that,hanging on the wall, in 100 mile house b.c. at exeter sporting goods.
Jude still has that rifle hanging on the wall above the new rifles.
As for barrel splits I have seen over a half dozen rifles split from obstructions over the last 30-some years. Most were split at the muzzle like the one in the first post of this thread, a couple were split at the chamber and the actions were fubar as well. At least one was a "bird cage" that was split in the middle while remaining intact at both ends.




















































