I found the published BC for Shock Waves
Lem - well that explains it for me. When you wrote:
and their SD is just a bit better than a 300gr 45 cal with a BC of .269
I thought you were putting that BC with the GD 300's.
The TC site shows the 250 SW with a BC of .24, I didn't see (look for) the 50/40 - 200's.
It does surprise me that the 200 XTP's have a BC .199 and the SW .269 since I think they are the same bullet excepting the polymere tip.