6.5 Grendel Armor Piercing ammunition data/info...

[stanc]

John, we amateurs generally only have access to one gel test photo or wound profile drawing. We have no choice but to base our conclusions on that single piece of evidence.

As for what happens when an early-yaw bullet must pass through 1" of gear or clothing, I can only point to the results of the 6.8mm 115gr HPBT bullet in bare gelatin vs after penetrating a loaded AK mag, shown on page 16 (bottom) and page 17 (top) in: http://www.dtic.mil/ndia/2008Intl/Roberts.pdf

Early yaw may have been favored by proponents of fragmenting bullets, but it also appears to be the only means to maximize terminal effectiveness in non-fragmenting projectiles used by UK and European armies. Posted by Tony Williams in another thread:

The wounding mechanism will therefore mainly be via rapid and reliable yaw and upset on impact: the bullet should start to yaw within about two inches of entering a body...

http://www.65grendel.com/forum/showthrea...1#post2397

Based on the available evidence of wound profiles -- which AFAIK are representative of statistically valid numbers of gel tests done by Martin Fackler -- it looks to me that onset of yaw in bare gelatin can be no better than ~3 inches, given the best possible FMJ bullet design. Neither the 1-inch "ideal" yaw, nor the ~2 inches desired by Tony, seem achieveable.

BTW, nice job on the new forum header. Are you going to resurrect the old Grendel skull logo?