A review of the 1000s of Threads and Posts on this Forum will reveal that any bullet manufacturers' bullets that enjoy widespread use by LRH Forum members will eventually be thoroughly vetted for BC. They'll be field-tested with very accurate rifles out to unreal distances. Your BCs will either stand the test of time, or they won't. No amount of conjecture will change this fact in your line of business on this Forum. If your stated BCs stand the test of time, you'll be one busy fellow making bullets and making money, and your customers will be impressed.
Here's just one example of a recent thread, evaluating one single bullet, from one individual manufacturer. And the testing and evaluation process of the BC for this single bullet is in its infancy. Here's the link to this Thread:
http://www.longrangehunting.com/forums/f19/new-150-matrix-test-136133/
Been posting here for close to 10 years, and this record on advertised bullet BCs has been played over and over again so many times, that it's old hat. Bullet BC values have been a steady and ongoing source of angst, consternation, debate, disagreement, with some leaving carnage like a bloody battlefield. So whatever your expectations may be, there should be no doubt that the BCs for your bullets will eventually be established by Forum members if enough of them decide to try them out. I have no reason to bet my life that your BCs fall short of their advertised values. There's nothing in it for me.
I hope you've established your BC values credibly. Regardless, you should understand that time and testing of your bullets will reveal their BC values. And then everyone with the interest will know.