Re: Highest BC for magazine length .308?
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Rob01</div><div class="ubbcode-body"><div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: MinorDamage</div><div class="ubbcode-body">
Nothing against Hornady, but there other offerings have always had BCs that were higher than actually tested. </div></div>
Not true. Off the top of my head I can say the 6.5mm 140 AMAX is higher than published per Litz testing and higher than the 139 Scenar as well. I don't have my Litz book at work but I am sure there are others.
As a note I have used the published data in JBM and have shot 178 AMAX, 140 AMAX, 208 AMAX and 105 AMAX to 1000+ and have always been within a couple tenths of a mil. </div></div>
Rob,
I fully respect you and am not attempting a pissing match here. That said, the 140 tested almost exactly as published by Hornady for Litz. Not higher, but damn close to right on.
The 139 scenar advertised BC is almost 10% higher than actually tested.
Again, this is no hit on Hornady. Sierra is fairly optimistic as well based on the real world. However, these companies tend to use computer simulations and modeling to generate the BCs. Being with a couple points is almost a certainty with these models. The OP was asking for the "highest BC" and I was pointing out the fact that until the bullet is actually tested by being fired from a rifle you can only assume all the parameters were exactly correct in the simulation.
Honestly, there are tons of great projectiles from any number of companies. BC does not ALWAYS make the difference. If you can't launch it at a reasonable speed you are selling yourself short. Find the best combo by testing it in your rifle and seeing what kind of pressures you can support. Every rifle is different...find your sweet spot.
Josh