BC of 50 cal 460 grain no excuses

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bkwheat28

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Couldn’t find anything search. For some reason remember them being .220. Anybody know for sure? Trying to do some ballistic calculations.
 
With my 50/475 bullet the RonL and I worked on HP diameters for expansion, my trajectory came out with a BC - 0.3
That weight bullet should be close.

Written after middle HP.
 

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