I know what the theory is, but in practial application theory sometimes falls short. Long for caliber bullets with reasonably high BCs, yes. Exceptionally high BCs, no.

The guys shooting 1K BR back East, when shooting 30 cals, like the 187 Bib. The 187 Bib has a measured BC of .520 and a calculated BC (like Berger does) of .550. The guys back East say that bullet outshoots most other 30 cal bullets, regardless of the chambering it's shot from--but realize they have a LOT less wind than we do out West. The 187 Bib can also be stabilized in a 1x13 twist barrel.

In the West, the 220 SMK with a measured BC of .629, or the 210 Berger and JLK with calculated BCs of around .640, seem to beat everyone else.

Please notice I haven't mentioned the 240 grain Sierra Matchking as being a winning 1000 yd BR bullet. Aside from the very fast twist is needs to stabilize and the subsequent potential accuracy issues that causes, AND besides the wobble issue these extra long bullets seem to have; the increase in BC provided by the 240 SMK cannot overcome it's velocity loss. That's why you see a lot of 187 to 220 grain, 30 cal bullets in 1K BR. The least amount of wind drift is usually found with the 187 to 220 grainers, regardless of the chambering.

BC is indeed a very important factor in picking a long range bullet, but it is not the only factor. I prurposely reduced the BCs of my 220 SMKs by trimming the bullet noses so they were all a uniform length and shot smaller groups than with the higher BC, untrimmed bullets.

When you get all this stuff right, you start shooting like I show in the pics. They show the first time I set the club record. The average of those three 5-shot groups was 4.91," and a couple months later I shot a 4.71" agg. I also won every match when I shot from first relay, and I shot small group of the match most of the time even if I was shooting in the windy second relay. I tied the NBRSA world record for score a couple times, and shot five "Official Screamer" groups--which is 5-shots at 4" or less. My best group was 3.5."

To repeat, BC ain't everything............................