Bergers have a more accurate BC? Hmmm. When I shot 1000 yd BR from 2005 to 2007, Berger BCs were understood to be definitely oversated. Now I seemed to get pretty close when I used Sierra's velocity boundries and applied them to the Bergers, and Sierra's approach was much more conservative. Then again, Sierra actually measures their BCs so you'd expect them to be very close, with the biggest difference being the barrel they are shot out of.

And by all means, don't use the 180s in a 7. We had a guy try a 7, and the 168s shot better than the 180s. Of course, neither came close to the 30s. The winningest rifles were 30 cals, and next were the 6.5s. Although the 7s spec out well on paper, they just don't seem to hold up in actual conditions. My guess is those extra long bullets are wobbly, and a wobbly bulley has a crappy actual BC regardless of what it is on paper. It seems that BCs much over th .630s just don't shoot so well. And if it isn't windy, even lesser BCs are better.