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Old July 24, 2000, 02:17 AM   #5
Junior member
Join Date: July 8, 2000
Posts: 107
Thanks, I was getting BC confused with SD. I used to pay attention to SD in lead handgun bullets -- so the shorter/lighter ones have a lower sectional density than the longer/heavier ones.

Now I'm finding out that some 7.62 X 39 ammo uses a bullet with a "plastic" tail section to affect ballistic coefficient. --Which would also affect sectional density.

OK, I understand now!
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