I saw an article from Sinclair about a new 175 grain Berger bullet and thought "Hey, maybe someone is doing to the 175's what has been done to the 155's for a higher BC!" It only has a BC of .510 though, and the main purpose is that it can be loaded to magazine length. Actually I'm not sure why they designed this bullet. I have no interest in Berger bullets, but thought some may be interested:
http://blog.sinclairintl.com/2011/04...-tactical-otm/