Re: ballistic coefficient questions . 6.5 mm bullets
This is a fascinating conversation!
I was thinking something similar to what Cold Trigger Finger stated regarding the super glue. I was thinking of wax, but super glue would work better. Edd, I don't think the point of the exercise is to eliminate expansion, just delay it. Hence, the hp design is still preferred.
Having said all that, unless the bc numbers stated by CE are accurate and do not fall off rapidly as the velocity drops, I am not sure this bullet would be useful in any but the very largest cased 6.5's (6.5STW and up) at long range.
The only 6.5 that I own with a fast enough twist to stabilize this bullet is a 6.5-284 and I don't think it will generate enough velocity to justify the cost and performance penalty of this design.
If I can get good accuracy and 3150 or so out of my 9 twist .264WM (which remains to be seen) shooting 140 Bergers or AMAX's, I don't really see the point in shooting this bullet. Even at 200fps faster or so, unless the bc's really are as high as stated and do not degrade significantly as velocity falls off, most of the performance gain is going to be at shorter ranges. To get even that performance gain, I would have to build my rifle around this bullet.
In my rifles, it looks to me like I can obtain the same or better results with less expensive bullets.
So far, the smaller caliber CE bullets kind of leave me cold. The .338 and larger bullets look to me to be worth exploring, though. Still, data derived from actual shooting could well change my mind on this.