08-27-2011, 07:07 PM
Jaywalker Wrote:I have a question suggested Tony's web site. We recognize the retained energy beyond 500 meters is advantage: Grendel, compared to the 7.62x51...Unfortunately, that info is misleading. Like so many other 6.5 Grendel vs 7.62 NATO comparisons, it pits the high-BC 6.5 123gr Scenar against the relatively unstreamlined 7.62 147gr Ball.
When you compare 6.5 120gr FMJ with 7.62 147gr FMJ, 6.5 Grendel comes off noticeably inferior in trajectory, retained energy, etc.
Quote:...but what about inside 500 meters? Is there a power requirement inside 500 meters that would disadvantage the Grendel in favor of the more powerful M80 ball? I'm thinking about chewing up cinder block, or something the M80 could do better...Testing is needed to verify it, but based on the video (in another thread) of concrete block being shot by 7.62 and 6.5 MatchKings, I'd bet that Grendel would also be less capable of chewing up cinder block and other tough barriers. As I've said before, with such target sets there is no substitute for mass. With 7.62x51, you not only have more mass (than 6.5), you have more velocity.