FMJ yaw and upset performance

[stanc]

I agree. That's why I was wondering if he had anything to contribute about the Grendel. I know he was involved in 6.8SPC testing, but I believe only very limited 6.5 useage.

AFAIK, the only 6.5 Grendel load in official tests was 120gr SMK.

I just wish someone who was in a position to test things had the Grendels interests in mind once in a while, instead of just the SPC. Not impugning GKR, by the way, just stating that he hasn't been very involved in Grendel stuff to my knowledge. I guess that if we pooled money and paid someone to do the testing then we'd get our great looking gel shots eventually, but no one has ever stepped up to the plate.

Yup.

I really doubt that the 6.8SPC projectiles are imbued with any magical terminal performance qualities that couldn't be readily duplicated in a 6.5 projectile with a tweak or two.

I think that depends on the type of bullet. Any expanding bullet optimized for 6.5 Grendel ought to give terminal performance indistinguishable from the same make and model as for 6.8 SPC. Evidence of this can be seen in the tests of 6.8 SPC 110gr TSX and 6.5 Grendel 120gr TSX:




However, for projectiles that depend on yaw, such as the FMJ in the subject title, it appears to me that the short 6.8 bullets tend to yaw more quickly than the long, streamlined 6.5 bullets. This is evidenced by the gel tests of the Remington 115gr 6.8 FMJ and Norma 120gr 6.5 FMJ. I'm skeptical that such 6.5 bullets can be tweaked enough to match 6.8 yaw ability.

The 6.8 crew has always been driven to promote their package as being suitable for .mil adoption, and torwards that end they have produced some good data and good looking gel shots. No one on the Grendel reservation has dedicated nearly that much time nor resources toward the same end. I'd just like to see the same amount of effort expended behind the 6.5

Ditto. But, I won't mention my "Testing, Testing" thread. :eek: