I'd figure the .500 is basically a necked .510, with straight walls at the mouth. The slight difference probably does great for bullet tension in the case. Lots of .500 S&W and .50 AE bullet choices.
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from below-Gary has a .500 and It is nice... very solid
- Lynn41, 2023-05-30, 06:00
- The .510 GNR is very slightly tapered - WB, 2023-05-30, 09:11