FS-2000 # 025563 Review
Service invoice # 371191 came into the Arnold Gun Shop for review; the customer claimed it fired out of breech. Portions of the fired case are missing but the evidence that remains indicates the cartridge in question discharged with the action open see photo
After discharging the bolt tried to push the cartridge forward resulting in a bolt imprint on the casing
The ammo sent with the weapon are reloads and it is very possible that they may be the cause of this incident see photo.
In the normal function of the weapon the cycle of operation would position the bolt in the unlocked position to extract and eject the fired round then picking up the cartridge that discharged. The bolt alignment lever would hold the bolt in position during the closing of the action and would not move till lockup which would prevent the firing pin from striking the cartridge in question. Further evidence on the bolt slide indicates that the cam lock struck it with a great amount of energy rolling a burr as it traveled rearward indicating that the position of the parts was correct for the firing cycle.
The amount of energy the bolt struck the bolt slide with and working with the escaping gases resulted in the damage to the stock from the bolt slide attempting to rotate.
One final broken part is the bolt return spring, it is broken and a small portion is collapsed. At this point there is no way to tell if this occurred during the discharge or was damaged before the discharge. Even if it was broken before the discharge, the function of the cam lock and bolt slide position the bolt in the correct alignment when cycling to the unlock position and the bolt alignment lever would then hold it there but here is a photo of the spring.
The evidence that we have points to a cause other than the cycle of operation, the weapon’s parts positions would not allow a firing out of battery. Poorly manufactured ammo could be the cause of the cartridge to discharge out of battery, without the cartridge head to see what struck it; it is impossible to say positively what caused the discharge out of battery. The damage to the parts indicates correct part position at time of discharge.