Grouse's numbers for the 200SW match up rather nicely with what I calculate based on real-life shooting. My working number is slightly lower but I shoot slightly lower velocity, so that makes sense.

Actually, I don't think velocity has anything to do with Hornaday's published number of .265. That is so high compared to what you get when you actually shoot the bullet, I don't think you could generate that BC on the range at any velocity where the bullet would hold together. IMHO it's just plain wrong. Perhaps someone who has shot them really fast from a Savage would know for sure. Either way, the ML market is the primary purpose for this bullet, 1800-2200fps, and .265 is WAY off from what it shoots in that velocity range so they shouldn't even publish that number.

Too often, I think companies just run the calculation on a computer and publish it without ever shooting to verify. An extreme example is Precision Rifle, which claims to calculate both on computer and shooting but then goes with whichever is higher!!! Some of theirs are high by about 40%.

The only number that matters is the one calculated from real shooting...