Multiple Ignition or Sympathetic detonation?
I had a similar forensic case with a “Colt” .45 SA many years ago…Misloaded ammo ( one cartridge) in a sequence of shots caused the top strap and three chambers to selfdestruct, along with the next round after the fired one ( the other was a normal fired case). Never could determine if it was a Double charge (most Likely) or whether wrong weight projectile also involved.
Anyway, the second detonated case was a “sympathetic” detonation ( shock wave in metal causes primer to ignite and fire round with half the cylinder on the way to heaven.) hence ripped open case, with stuck bullet.
THis .44 Magnum has probably exploded on the first shot, causing both adjoining cartridges also to detonate “sympathetically”, with the portion of cylinder wall already in disintegration, allowing the shell cases to rip open, allowing the extra force to really demolish the sides of the three chambers.
Wrong Powder charge or Wrong Powder type + Wrong charge are the most likely suspects. Have any other rounds survived for analysis? ( charge and Powder type?).
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