and where exactly have you seen a 70 grain bullet of any caliber that had a BC of 650?
a 90 gr speer deep curl in 6mm only has a BC of .365
a 140gr Amax in 6.5mm only has a BC of .585
a 180 grain speer deep curl in 308 only has .483
a 325gr hornady FTX in 458 is only .230
where exactly have you seen such a bullet with such a BC? all of those are high quality bullet designs and all are considered to have decent, if not outstanding BCs.
all guns lost in a tragic smelting accident.
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