Lyman Reloading Handbook 49th

[glenns]

Just bought this:

For the loading data for each bullet type there is notation on the right corner just below a picture of the bullet. What is "BC" and "SD?"

Example: on page 341, 9 mm Luger, 147 gr. TMJ -
BC: .208
SD: .167

Thanks.

 

[MtnCreek]

http://www.thehighroad.org/showthread.php?t=611056

 

[glenns]

Thanks. I also found this:
http://www.chuckhawks.com/bc.htm

 

[Jim Watson]

sectional density (which is the ratio of a bullet's diameter to its weight)

You gotta watch out for ol' Chuck. Sometimes he gets it right, sometimes he doesn't.
Sectional density is the ratio of a bullet's weight to its diameter squared. Like I said in your other thread.