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2/23/2007 6:45:51 AM EDT
What kind of accuracy are you guys getting from your Grendels?

I am thinking about selling my AR10 T and having a .556 carbine upper for shorter ranges and a 22-24" Grendel upper for longer ranges.

I am looking for a versatile/multi-use setup that I can configure for the type of hunting that I am doing.  I plan to start reloading soon, so ammo availability is not as big of a factor.

Thanks for any info that you can help with.
2/23/2007 7:22:30 AM EDT
[#1]
Les Baer 16.25" Grendel article in Shooting Times - 5 shot groups

link


Okay here's what he used and the velocity, then another paragraph the accuracy. Barrel length is 16.25

Blackhills 123 gr Matchking preproduction 2441 fsp
Yugoslav M67 123 gr FMJ 2350
5.56 Blackhills 77 gr Matchking 2750

That was at muzzle so here are the velocities at 800 yards
Blackhills 123 gr Matchking preproduction 1327
Yugoslav M67 123 gr FMJ 900
5.56 Blackhills 77 gr Matchking 1172

Accuracy
In this category there was more different ammo, so I'll give the velocity and accuracy.

Sierra 107 gr Matchking AA 2520 31 grs 2601 fps 1.60 in
Nor 130 gr Blackdiamond AA 2520 29.5 grs 2392 fps 0.50
Swift 130 gr Scrocco Norma 202 29.0 grs 2339 fps 1.00
AA 90 gr TNT FACTORY 2621 fps 1.25
Blackhills 95 gr V-MAX FACTORY 2682 fps 1.00
AA 123 gr Scenar FACTORY 2473 fps 0.60
Blackhills 123 gr Match king FACTORY 2441 fps 0.50
Wolf 123 SP FACTORY 2350 fps 1.50


Gunblast article with AA and Sabre tactical models. 5 shot groups in lower right of page.

I haven't seen any 10 shot groups yet.

2/23/2007 8:05:44 AM EDT
[#2]
I have gotten some .5moa groups with an AA 14.5" barrel.  It is more common however for me to get groups at are around .75moa.  Even the worst groups wind up at about 2.5moa.  That is pretty good in my opinion using a chromelined barrel.

Reloading is the way to go with a Grendel.  The accuracy potential is so high that reloading ammo tailored to your barrel is a no-brainer.

2/23/2007 8:20:21 AM EDT
[#3]
In conversations with Bill Alexander I found that the barrel length on the 6.5 need not be as long as you are planning to be totally effective.  If you are going to do it, talk to him first, or the boys at Lothar Walther.
2/23/2007 3:35:34 PM EDT
[#4]
My CSS 20" 6.5 Grendel Counter Sniper consistently shoots 0.5" groups at 100 meters and 1.0" groups at 200 meters with the AA factory 120gr Nosler ammo.  Have yet to get out and try my handloads.

I also have a standard 5lb trigger that is a bit rough - will swap it out eventually and hope I can go smaller than 1/2 MOA.
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