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henmar77 Wrote:I wish more magazine makers would jump on the bandwagon already. Would love to have some magpul mags. Has anyone tried modifing any 223 mags to make them work, or are they just that much different?
Polymer walls are too thick to allow good function. Unless there is some other new, miracle material used, we will be using stainless mags. Modified 223 mags, (not magpul) can be made to work, but as I said above, its a crapshoot on consistency.
You seek escape from pain. We seek the achievement of happiness. You exist for the sake of avoiding punishment. We exist for the sake of earning rewards. Threats will not make us function; fear is not our incentive. It is not death that we wish to avoid, but life that we wish to live. - John Galt
bwaites Wrote:Polymer walls are too thick to allow good function. Unless there is some other new, miracle material used, we will be using stainless mags. Modified 223 mags, (not magpul) can be made to work, but as I said above, its a crapshoot on consistency.
I would think that single stacking the grendel in a magul would work theoretically. FYI: Im not pretending to know anything about this, just asking the experts 
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henmar77 Wrote:I would think that single stacking the grendel in a magul would work theoretically. FYI: Im not pretending to know anything about this, just asking the experts
Single stack would work, EXCEPT the Grendel has dual feed ramps, so it has to feed from the right and left. The Beowulf, for example, single stacks in standard mags just fine, but it has only a central feed ramp, not dual feed ramps.
You seek escape from pain. We seek the achievement of happiness. You exist for the sake of avoiding punishment. We exist for the sake of earning rewards. Threats will not make us function; fear is not our incentive. It is not death that we wish to avoid, but life that we wish to live. - John Galt
bwaites Wrote:Single stack would work, EXCEPT the Grendel has dual feed ramps, so it has to feed from the right and left. The Beowulf, for example, single stacks in standard mags just fine, but it has only a central feed ramp, not dual feed ramps.
Does the Beowulf work in a 223 mag becuase its so big that it sits over the dual feed ramp? I thought that the width of the grendel and beowulf were the same at the base. so wouldnt the grendel single stack in a 223 just fine? I also thought that the problem was with the more with the lip design anyway?
No, .223/5.56 magazines don't single stack the Grendel, all kinds of dimensions are different.
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henmar77 Wrote:I thought that the width of the grendel and beowulf were the same at the base. Grendel and Beowulf have the same rim diameter, but Beowulf has a bigger case diameter.
stanc Wrote:Grendel and Beowulf have the same rim diameter, but Beowulf has a bigger case diameter. Yep, known as a rebated rim diameter. The .284 Winchester case has a rebated rim.
fastpat Wrote:Yep, known as a rebated rim diameter. The .284 Winchester case has a rebated rim.
The .284 is the parent case for the .450 Bushmaster. When the cartridge was new and you could not get brass, there were guys making it out of .284 with varying results.
I have read from numerous sites that the 6.8SPC mags work flawlessly in the 6.5 Grendel, and vice versa. Anyone have experience with that?
The 6.8SPC magazines don't work, the feed lips are the wrong shape. The only magazines that work in the 6.5 Grendel are those made for it.
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fastpat Wrote:The 6.8SPC magazines don't work, the feed lips are the wrong shape. The only magazines that work in the 6.5 Grendel are those made for it.
I have 20+ C-Products 6.8SPC 25 round mags that work just fine in both my Grendels... Admittedly, some of them have ISMI springs that replaced weak factory springs. No issues with the feed lips, followers, etc.
I dare say that no one will buy 6.8S magazines to use in a 6.5G rifle, since they cost the same or more, so unless you have both calibers and already have at least 20 magazines (ten for each rifle) and can test this, I'd advise folks to stay with magazines designed for the 6.5G cartridge.
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Opus Dei Wrote:That few; huh. I would've figured maybe half-capacity.
I did a good bit of testing with Magpul 30 rd's and Grendel. For me they have been very reliable loaded 5-6, get hard to insert in the mag well up to 10, and get unreliable in the 10-15 round range. That's due to the thickness of the magpul walls. I have not tested, but my suspicion is that an alloy or steel mag would allow a bit more rounds, but you are really going the long way around to avoid Grendel mags.
Not recommending magpul as an alternative, just confirm the reliability (and not). It's all about the case taper and the fact that the magpul & 5.56 mags do not allow a proper double stack mag. I've posted diagrams on this in the past.
Between my brother and I we have 15-20 cprod 25 round (30 rnd format) grendel mags, and 3 17rd bought over a 2-3 year period. Just never had an issue. All have been reliable. About my biggest complaint is that a few were snug in billet receivers, about the same as a magpul is.
Hopefully ASC/Cprod will pick back up. If not, someone else will I suspect.
6.8 Barret mags are pretty, but if that was what it took to shoot grendel I'd not be fooling with it.
US Palm and Tango Down debuted two new 7.62x39 quad stack magazines at SHOT. If you kept the existing wall thickness of a polymer mag and then opened up the stack outside the magwell to accommodate the Grendel case, you could have a nice 30rd or even 45rd mag that is as tall as a 30rd 5.56 mag.
[video=youtube;xtdgRhEauTo]http://www.youtube.com/watch?v=xtdgRhEauTo[/video]
Things are getting interesting. Unfortunatley, Surefire 60rd 5.56 mags have proven to be unreliable as I suspected they would be. Tango Down and US Palm claim that these are actually reliable, but we'll see as we go forward.
They also had a quick barrel change AK with an interrupted thread system and a detent.
[video=youtube;y83fjaMXXUM]http://www.youtube.com/watch?v=y83fjaMXXUM&feature=relmfu[/video]
Does anyone know of a source for 6.5 G followers?
taggor Wrote:Does anyone know of a source for 6.5 G followers?
Unfortunately, I don't know of a source. Back in the day, C Prod had them listed on their site, and 44mag had some for a while, but I believe those are long gone. No one seems to list the polymer, blue followers with the 6.5 Grendel designation.
Has anyone tried the stainless CMMG follower in a 6.5 mag?
Someone from AA had posted on AR15.com that @ the 2012 SS that there were going to be two new suppliers for Grendel magazines. Does anyone have any more information to share about this?
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