Designed for jacking deer? I have found arrows in the woods lightly charred with the wad of a 410 shotgun stuck on the shaft. This is not a new idea for the deer jackers.
I have seen a similar item from WWII. It was a device that attached to the end of your rifle to launch a string between ships (or anywhere) so that a rope could be strung. The pressure from the blank propelled it.
Every once and while you can find them on the surplus sites or at gun shows.