6.5 grendel

[sandwarrior]

Re: 6.5 grendel

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: longrange30</div><div class="ubbcode-body"><span style="text-decoration: underline">By far my favorite also, very accurate.</span>
<span style="font-weight: bold">123gr. Lapua Scenar
29.0gr. Win748
CCI #450 Primer
AA/Lapua Brass
OAL- 2.255"</span>

Picture of some I just loaded up:

Side-by-Side comparison (below pic) of some 6.5 Grendel Hornady Bullets.

<span style="text-decoration: underline">L to R</span>
120gr. A-MAX
123gr. A-MAX
129gr. SST
95gr. V-MAX

<span style="text-decoration: underline">Another accurate 6.5 Grendel load load data and pic.</span><span style="font-weight: bold">
123gr. A-MAX
30.2gr. AA2520
CCI #450 Primer
AA/Lapua brass
OAL- 2.255"</span>

<span style="text-decoration: underline">And the Build the shoots 'em:</span>

</div></div>

Tha's some serious eye candy right there!

Edit:

Sititunga,

Agreed, thus the statement about it being very hard on brass. If you have a long rifle gas system you can get this to the very edge of pressure limitations. Trashing the brass doesn't help though when trying maintain accuracy over the long haul. Good brass that is formed to the chamber and can be used a number of times over and over is what is going to give you an accurate platform. Also, while slower, at the extreme ranges you will get less drift with the 123's vs. the 108's. Both are pretty much lobbed in there when shoot out to 1k. Like 34 MOA where I'm at to get there. It beats a .308 175 SMK but not by a whole lot.

 

[Unknown]

Re: 6.5 grendel

Sobrbiker,
I don't doubt what you say...but I already own it. I just haven't decided on whether it is worth rebarreling it with a Kreiger, or if there is something wrong with the basic upper and lower rather than simply a rack grade (read as boring as hell) barrel. Accuracy is acceptable at 1.25 inches at 100 yards without working up a load for it.

Do you think putting a really good barrel would fix the accuracy, or is there something basically wrong with the DPMS actions that makes them hard to get decent accuracy out of. I had always figured that I just ended up with one of the barrels that are good enough to make it out of their shop, but don't shoot well for me. The test groups they provided ran just over half inch, but as I didn't see the group fired, I have my suspicions...

Thanks for the input.

 

[Unknown]

Re: 6.5 grendel

Nice photography...nice Grendel.

 

[sobrbiker883]

Re: 6.5 grendel

In my opinion the quality of these affect accuracy (provided the upper receiver is in spec), barrel then trigger.

If you have a crappy trigger it may be tough to shoot better than 1.25" at 100. Factory is from a rest and probably a mechanized trigger actuator (and at what distance?).

 

[LRS_Ranger]

Re: 6.5 grendel

Nice rifle, Longrange30... kinda makes me want to find the nearest IRS field office so I can go ask them where my money is... As soon as I get the check I'll have my grendel underway...

 

[LRS_Ranger]

Re: 6.5 grendel

By the way have any of you Grendel guys tried the Hornady brass?

 

[sititunga]

Re: 6.5 grendel

Whatever happened to the Grendel forum website?

 

[sandwarrior]

Re: 6.5 grendel

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: LRS_Ranger</div><div class="ubbcode-body">By the way have any of you Grendel guys tried the Hornady brass?</div></div>

Yes, it has given me some pretty good accuracy. I loaded it with a bunch of 85 gr. Sie. Varmint. Groups were around .6". I haven't loaded them enough to see how long they last.

 

[Unknown]

Re: 6.5 grendel

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: sobrbiker883</div><div class="ubbcode-body">In my opinion the quality of these affect accuracy (provided the upper receiver is in spec), barrel then trigger.

If you have a crappy trigger it may be tough to shoot better than 1.25" at 100. Factory is from a rest and probably a mechanized trigger actuator (and at what distance?).
</div></div>

I got the JP trigger, then bought the better JP trigger spring kit upgrade to go with it. DPMS sells the JP trigger pack, but failed to mention that they used the stock trigger springs with it. The stock trigger and hammer springs seriously degrade the performance potential of the JP trigger. I know because I have other rifles with the full JP triggers AND JP spring upgrades. Once I realized that DPMS didn't supply the better springs, I bought and installed them.

Both my upper and lower match up very tightly, and I have the tube forend on the rifle.

So it appears that the barrel is the biggest downfall to accuracy that remains
the primary cause of mediocre accuracy. That is as I expected.

The only other thing I could think of would be to insure that the face of the upper receiver where the barrel's locking collar (barrel nut?) tightens the barrel onto the upper is perfectly square with the barrel extension so there is no uneven pressure on the barrel extension.

One custom AR builder told me that on about 75% of the uppers he checks, the face of the upper isn't square to the barrel extension. He squared up my upper for no charge when I sent the upper in for some other work. Great customer service (AR15performance.com).