BC's (or at least the type of BC's used) are figures that are subjective to velocity. There is no standard velocity that all companies rate their BC's for. Berger has recently reduced the veloctity that they rate their BC's (I beleive to 2800fps). There are different ways to rate a bullets ballistic efficiency, all companies rate G1 BC's and all ballistic calculators I know of use G1 BC's for calculations. The G7 BC is generally not dependent on veloctity and if ballistic calculators could use this figure instead of the G1 and all bullets were rated on a G7 there would probably be much better consistancy in ratings in the industry. The best way I know of to see how these bullets compare is to test the bullet from a perfect zero with a known muzzle velocity and reverse calculate the BC. Repeat the process with the other bullet and you'll know what youre getting in ballistic performance. If you can achieve nearly itentical MV's you're info will be very accurate (at least as a comparison between two bullets). Here's where I get information on subjects like this...
http://bryanlitz.bravehost.com/BCTest.htmlBryan is now the top ballistician at Berger, and one would be well advised to read all the articles on his site (I have to read them more than once
) in my opinion he's the best source of information. When I've contacted him in the past he has been extremely willing to answer any questions and help in any way.
