Never mind. I found a chart on line.3/16"
Remington made it for a short time in the early 1970s.I've really never heard of a 5mm rifle either. Sounds really expensive but still cool.
**** I was just being a smartass about the 10mm rifle
I've never heard of a 10mm rifle
And without getting a cramp in my leg.
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Or throwing my back out.And without getting a cramp in my leg