Kegworth

Item #: SCP - 4570
Object Class: Safe
Special Containment Procedures: SCP-4570 is to kept in standard storage locker at Site - XX along with the provided rifle and handgun to be located beside it in the same locker. SCP-4570 is not to be removed from it's locker by any personnel other than high ranking security guards and research staff if they are authorized to conduct an experiment with it. Due to it's nature, SCP-4570 may be used for firearm's accuracy training and/or maintenance for security guards. In the event of a containment breach SCP-4570 is to be chambered in either the provided rifle or handgun and used in combat. Removal of SCP-4570 requires on-site approval from personnel with at least a level 3 security clearance.
Description: SCP-4570 appears to be a standard .45-70 rifle cartridge of undetermined make and origin, with no manufacturer's markings on it's rim. SCP-4570's anomalous properties commence whenever it is chambered into any rifle or handgun capable of clambering a ordinary .45-70 cartridge. Once chambered, SCP-4570 can be fired as any normal .45-70 cartridge, however instead of a bullet leaving the barrel of the fire arm an invisible pellet of an as-of-yet unidentified form of energy is fired in it's place. This pellet does not produce any amount of smoke that would be expected from a .45-70 cartridge and is lethal as a regular bullet from an identical cartridge. Tests involving ballistics gel have determined that the impact force is identical to that of an non-anomalous .45-70 bullet. Maximum range and accuracy however far exceed that of a normal .45-70 cartridge. Reduced recoil and how it always travels in a perfectly straight line. When used against living organisms the pellet leaves behind large wounds identical to gunshot wound from a .45-70 round, with the exception of a complete absence of any inorganic debris left behind in the wound. SCP-4570 can easily be removed from any rifle or hand gun it's chambered inside of as if it were a normal .45-70 cartridge. Attempts to disassemble the bullet have resulted in failure, MRI Scans of the bullets interior have been inconclusive.
Acquisition: SCP-4570 was recovered on 7/10/20██ in the remote village of ███████, Alaska. Following a 911 call at the home of a Mr. ████ ████, who after 3 hours of failed hostage negotiation, chose to engage the Alaska State Troopers in combat rather than surrender. Mr. ████ ████ claimed that he would use his magic gun to kill anyone who crossed him. Unfortunately embedded foundation agents were unable to arrive in time to secure.