I'm about to get back into reloading for my .50 BMG rifles and have always thought that M33 Ball FMJ bullets were 647gr. Lately, I've noticed ads for M33 surplus ammo being described as having 660gr. What gives? Did M33 ammo change over the years?
Difference in .50 BMG M33 bullet weights... 647 or 660?
- Thread starter cantgrowup
- Start date
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