Agree but… there are many MFGs of projectiles that are VERY, VERY close to being spot on with their stated BC's, some requiring no adjustment at all for me. Some have "estimated BCs" that are garbage, not even close to being accurate. Personally I've had experience with 2 and won't use their products anymore. For me if a MFG is moving into making a Precision Long Range hunting projectile, and going to market it as one, I sure hope it's been thoroughly tested with VERY accurate data in all categories, BC included!