SpudGun
Well-Known Member
I have finally got my paws on a .50 Fat Mac round, rare as hens teeth. Made from a 20mm x 102 Vulcan case. This has a 783 Grain Longfellow bullet. With a powder charge of 320 grains, the Longfellow had a muzzle velocity slightly over 3,200 fps.
.38 Special for comparison.
.38 Special for comparison.

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