09-05-2023, 04:05 PM
lazyengineer Wrote:I'm not a fan in Grendel because it's so heavy I can't get my velocity up. My distance to 1000 ft-lb, and my distance to transonic is longer with 123's, than it is with 129's. I will say, I like 129's in the MDRx 6.5 Creedmoor rifle,
Related to that, 6.5 Grendel flight ARC at short range from shorter barrels isn't as flat as 5.56 and 6.5 CM like I'm used to. I got burned by that trying to do neck shots at 100 yards with a 200 yard zeroed Grendel once, where they arced just enough over just enough at 100 yards. The heavier and slower the bullet, the worse that gets in the 200 yard range distance level. (I zero my 5.56 and 6.5 CM rifles at 200, which gives a dead hold impact within 1.5 inches at anything from about 35 yards to 225 yards. Not so much with Grendel, which in that case arcade 3" high at 100 yards, which was just high enough to miss a spine hold on small dear due to a landowners "1000 ft-lb and neck shots only" requirement.
If you go 90-110gr, it gets really flat.
75yd zero with the 95gr V-MAX at 2900fps
.3 high at 100yds
-1.6 at 200yds
-4.8 at 250yds with only 4.6 of wind drift 10mph full value
1005ft-lbs at 300yds
90gr TNT at 2900fps (this is the average mv for Federal factory ammo from my 17.6 Grendel) 75yd zero
100yds .3 high
200yds -2 1032 ft-lbs
110gr Sierra Tipped Game King at 2650fps, 50yd zero
100yds 1.3
200yds -0.4
Maintains 1064ft-lbs to 300yds
105gr Sierra BlitzKing, 2800fps, 75yd zero
100yds .3 high
200yds -1.9
1025ft-lbs to 350yds
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
