I like the idea of using the 500 in a rifle, best use for it. An old trapper/gun wrench/adventurer of Alaska named Johnson living near Johnson's landing already worked his version of this on Winchester 71s. He used surplus 50 cal machine gun barrels and reformed 348 brass to a new 50 Johnson for...
Ahhh, speed loaders! And all the young rookies who thought they were John Wayne or Clint Eastwood!! They brought many fond memories of being a firearms instructor! 😜
I've no idea how the numbers people in the military tally these things, I'm only able to use the data as provided. I'll poke around and see what they say about the sandbox battles.