6,5 Grendel Sectional Densities???

[sgtslasher]

Just read the new rifle shooter and gleamed an interest in this lil gem... As I was looking for a new deer rifle in 6.5 Swedish... But, these energies out to 400yds would be awesome for deer if they utilize the same old 6.5 bullets.... Please someone tell me more...

I've read all these 6.5 grendel posts, yet people just see people talk about velocity, size(6.5 vs 7.62 dia) with NO thought to BC, SD, energy and wound ballistics...

Why is this 6.5 perfect on paper? high BC, enough weight bullet wt for CPX2 animal @ 400+ yds (CPX2=animals 200+ lbs) if using the same 6.5x55 bullets then enough penetration to incapacitate quickly. Why is SD important? Because while large bores put big holes in thing, they usually don't have enough BC or SD to work well beyond 250 yds or so on a regular basis...

So please tell me the bullets are the same.... A new upper on my AR would make a phenominal Deer rifle for my son to use to take his first deer with....

 

[Gewehr98]

No reason they'd be any different for a given weight range.

Different velocities and Ballistic Coefficients, yes. But a 120gr Nosler Ballistic Tip will have the same Sectional Density whether fired from a 6.5 Grendel/6.5 PPC, .260 Remington, 6.5x55 Swede, 6.5x57 Mauser, 6.5-.284, 6.5-06, or 6.5-300 Weatherby Magnum.

The 6.5 Grendel/6.5 PPC may not have the case capacity or magazine length to handle the 155-160gr hunting bullets used by the 6.5x55 Swede, but if I remember, they load a 144gr bullet. The 6.5 Swede has the edge on velocity, the case is 55mm long, quite a bit more boiler room. But the 6.5 Grendel should be just fine on stuff like whitetail deer at closer ranges. In fact, once the AWB expires in September, I'm looking to do just that, build a 6.5 Grendel or 6.5 PPC AR-15 for Wisconsin whitetail. Good ergonomics, accurate cartridge, light recoil, and excellent SD bullets.

 

[JWH]

Yes, the new 6.5 Grendel uses the same 6.5 bullets as other 6.5 cartridges such as the 6.5 x 55 Swedish or the .260 Remington. So that gives you a range of 90 to 144 grain bullets. However, since the case capacity is smaller, the 6.5 Grendel was designed around 120-grainers.

Sectional densities are the standard 6.5 bullet sectional densities as listed by the bullet manufacturers in their catalogs, as are ballistic coefficients.

Let me refer you to two other sources of information: (1) I am so hot on this cartridge that I've put up a fan website dedicated to it: check out www.65grendel.com. (2) The guy that really turned me on to the 6.5 Grendel sometimes posts on this forum; he goes by TX65 and actually had a hand in developing the 6.5 Grendel for use in AR15s and can tell you more than you'd ever want to know! TX65, are you out there?

John

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