So since getting my 6.5 Creedmoor I've been studying the bullets that hopefully will work best for my purposes. When checking the BC of many bullets I found what appears to be a misprint. But since I'm not to good at math I am hoping someone who understands this could explain it. .the 2 bullets in question are the 140 gr Hornady SST and the 130 gr Sirrocco II. the SST has a BC of 520 and the Swift's BC is 571 . The SST is longer than the Swift and appears to be more streamlined. What is the cause of the. 05 difference. Thanks in abvance.