11-15-2015, 04:01 AM
One of the biggest surprises for me with this cartridge was shooting my 16" Grendel at 1200yds a few years ago. AA uses a 1/7.5" twist on the 16" pipes, so they stay spun really well.
If you run the numbers of a 123gr SMK from a .260 Remington vs. a 6.5 Grendel, you'll start to see why I shoot my Grendel's so much more. I see the real performance advantage of the .260 Rem at close ranges where you want the flatter trajectory, but once you pass a certain point, it's hard to see the difference between the two.
You're looking at 100-150yds difference between where the .260 hits the Grendel's muzzle velocity, given the same barrel lengths. I can buy boat loads of factory ammo for the Grendel for very affordable prices, whereas I don't even consider shooting any of the .260 Rem factory ammo in my .260 gasser.
I also like the Berger spin stability calculator. It's a great program, and has a built-in bullet list as well.
If you run the numbers of a 123gr SMK from a .260 Remington vs. a 6.5 Grendel, you'll start to see why I shoot my Grendel's so much more. I see the real performance advantage of the .260 Rem at close ranges where you want the flatter trajectory, but once you pass a certain point, it's hard to see the difference between the two.
You're looking at 100-150yds difference between where the .260 hits the Grendel's muzzle velocity, given the same barrel lengths. I can buy boat loads of factory ammo for the Grendel for very affordable prices, whereas I don't even consider shooting any of the .260 Rem factory ammo in my .260 gasser.
I also like the Berger spin stability calculator. It's a great program, and has a built-in bullet list as well.
NRA Basic, Pistol, Rifle, Shotgun, RSO
CCW, CQM, DM, Long Range Rifle Instructor
6.5 Grendel Reloading Handbooks & chamber brushes can be found here:
www.AR15buildbox.com
CCW, CQM, DM, Long Range Rifle Instructor
6.5 Grendel Reloading Handbooks & chamber brushes can be found here:
www.AR15buildbox.com