Another thing to think about, if it matters to you, is powder consumption. 6.5-06 has about the same charge weights compared to 6.5x55 Mauser.
If you are occasionally going to hunt with this, then the 142gr Nosler Accubond Long Range would make an impressive do-all load for game. The BC on it is off the charts at .719 for G1/.320 G7.
Talk to your smith about throating no matter which way you go, starting from what you want to happen on-target, then working back through the flight performance and internal ballistics necessary to make that happen.
With 6.5x55, you'll top out in the mid 2700fps for a 140gr. With 6.5-06, you can break 3000fps with a 140gr.
.270 Winchester brass is stronger than -06 as well, since the .270 Winchester is SAAMI rated for 65,000psi MAP. 30-06 Springfield is rated to 60,000psi MAP by SAAMI.
If you run the ballistics on that 142gr ABLR going 2950fps, it stays supersonic out to almost 1600yds. It has 1000 ft-lbs at 900yds still. Crazy.
If you are occasionally going to hunt with this, then the 142gr Nosler Accubond Long Range would make an impressive do-all load for game. The BC on it is off the charts at .719 for G1/.320 G7.
Talk to your smith about throating no matter which way you go, starting from what you want to happen on-target, then working back through the flight performance and internal ballistics necessary to make that happen.
With 6.5x55, you'll top out in the mid 2700fps for a 140gr. With 6.5-06, you can break 3000fps with a 140gr.
.270 Winchester brass is stronger than -06 as well, since the .270 Winchester is SAAMI rated for 65,000psi MAP. 30-06 Springfield is rated to 60,000psi MAP by SAAMI.
If you run the ballistics on that 142gr ABLR going 2950fps, it stays supersonic out to almost 1600yds. It has 1000 ft-lbs at 900yds still. Crazy.
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