Ok, so let's say you've settled on the Sierra 117 BTSP in a .25-06 @ 3000 fps. And let's say that you don't shoot over 300 yards. Now with a bc of .410 sighted in 2.6 inches high at 100 yds it zeroes at 250 yds and has 4.9 inches drift at 250 yards in a 10 mph cross-wind. Let's suppose that same 117 bullet had a bc of .610 (which is not unreasonable). Still sighted in at 2.6 inches high at 100 yds, at 250 yds its 0.4" high (negligible difference) but wind-drift is only 3.2 inches instead of 4.9 inches. At 300 yards the difference in drift is 7.3 inches versus 4.6 inches and nearly an inch less drop. So even if limiting your shots to 300 yards, it would be better to have higher bc .25 cal projectiles. Instead of defending these poor bc .257 projectiles, you all should be doing what I'm doing- advocating an improvement in their bc.
