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Thread: Hows the testing going?

  1. #21
    Marksman johnny mac's Avatar
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    Re: Hows the testing going?

    I'm no engineer, so maybe I'm missing something, but it SEEMS like there should be some simple solutions. Any input on why these wouldn't work (not that I"m in any position to do anything about it)would be great. The 6.5 seems like an easy one, since it shares the same bolt as the 7.62 and 5.45 x39. I gave up waiting and got a Model 1 Sales 6.5 "sporter" upper that works great with "Grendel" ammo. So it seems like the engineering shouldn't be that difficult, and maybe it is more of a copyright/production right issue, being hidden behind an engineering excuse. Furthermore, it seems that quite a few cartridges-both factory and "wildcat" end up with nearly identical performance with slightly different dimensions/specs. I originally thought the Grendel was pretty much a 6.5x39. It doesn't seem like it would be that hard to come up with an alternative if Bill Alexander won't do what is needed to get this cartridge off the ground. All due respect to the man, but he took the work others started and came up with what seems to be a pretty special cartridge-he may have a patent, but he doesn't own the whole concept, and it sucks to see such great potential not going anywhere. The one major improvement would be a round that would work in a P-mag with similar performance. I've never been a fan of the AR or the 5.56, but now there are plenty of AR alternatives, and some potentially great cartriges. I understand the priority for the -M, but I just can't understand how the 6.5 got derailed when it seemed so close.

  2. #22
    Expert stanc's Avatar
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    Re: Hows the testing going?

    Quote Originally Posted by johnny mac View Post
    I'm no engineer, so maybe I'm missing something, but it SEEMS like there should be some simple solutions. Any input on why these wouldn't work (not that I"m in any position to do anything about it)would be great.
    Neither Alex Robinson nor Bill Alexander have been willing to discuss publicly why Robarm has chosen to not obtain a license, and Alex has not gone public with why it has so far proven impossible to get an unlicensed copy to work.
    The 6.5 seems like an easy one, since it shares the same bolt as the 7.62 and 5.45 x39.
    While 6.5 G does have approx the same rim diameter as 7.62x39, it is [b]not the same as that of 5.45x39.
    I gave up waiting and got a Model 1 Sales 6.5 "sporter" upper that works great with "Grendel" ammo. So it seems like the engineering shouldn't be that difficult...
    Apparently it is indeed [b]that difficult, otherwise the 6.5 kits would've been available a long time ago.
    I originally thought the Grendel was pretty much a 6.5x39. It doesn't seem like it would be that hard to come up with an alternative if Bill Alexander won't do what is needed to get this cartridge off the ground.
    Perhaps, but then it'd be necessary to get a manufacturer to produce the alternate cartridge. 6.5 Grendel ammo is already on the market.
    All due respect to the man, but he took the work others started and came up with what seems to be a pretty special cartridge-he may have a patent, but he doesn't own the whole concept, and it sucks to see such great potential not going anywhere.
    It's incorrect to say that it isn't going anywhere. It [b]is going, just at a slower pace than might be possible if Bill didn't retain the degree of control that he does.
    The one major improvement would be a round that would work in a P-mag with similar performance.
    I don't know if that's possible, since P-Mags only work with the 5.56 case diameter.

  3. #23
    Marksman marinewmu911's Avatar
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    Re: Hows the testing going?

    I'm sure Magpul, MSAR, or some other good polymer mag maker could pull it off, the demand has to be there though, and since the cartridge is slow to spread thru the market, even shooters who know of its capabilities and want a rifle continue to buy other more easily attained products first, the demand is very low for a 6.5 PMAG.. When I asked about this directly with magpul they said there was nothing in the works for either a 6.5, 6.8, or any alternate cal PMAG other than the 20LR (this as of 3 months ago or so)
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  5. #24
    Expert stanc's Avatar
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    Re: Hows the testing going?

    A number of people have queried Magpul on this issue. They were told that, due to the thickness of the plastic used, to make P-Mags for 6.5 Grendel (and 6.8 SPC) would require enlargening the mag well. That simply won't happen.

    Whether or not sufficient demand exists, 6.5 and 6.8 P-Mags are not technically feasible for existing rifles.

  6. #25
    XCR Guru TomAiello's Avatar
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    Re: Hows the testing going?

    Doesn't the emag use thinner plastic anyway?
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  7. #26
    DSM
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    Re: Hows the testing going?

    I think you could get them to work in a regular mag with a modified follower but you'd have really decreased capacity. When the 6.8 first rolled out there was the initial confusion/claim that you could use standard mags, and you can, if you only want to have a handful of them.
    When have any of our plans ever actually worked? We plan, we get there, all hell breaks loose.

  8. #27
    Rifleman kolob's Avatar
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    XCR in 6.5

    We are almost done engineering the .308. It ended up being a complete redesign from our work from a few years ago. So we're going to spend some time reviewing the 6.5 again. I send a 6.5 out into the wild last week with a good friend from the olden days. Keep your fingers crossed.

    Alex J. Robinson
    Manager
    Robinson Armament Co.

  9. #28
    Expert MrSmitty's Avatar
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    Re: Hows the testing going?

    Awesome Alex. Be sure to send some up to Canada for me.
    "Socialism is a philosophy of failure, the creed of ignorance, and the gospel of envy, its inherent virtue is the equal sharing of misery."

  10. #29
    Carbineman tolson68's Avatar
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    Re: Hows the testing going?

    Thanks for the update on the the XCR-M and the 6.5 conversion. Sounds like you will be getting more of my money soon.

    T

  11. #30
    Rifleman Quiet Man's Avatar
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    Re: Hows the testing going?

    Thanks, Alex! I look forward to both the 6.5 and -M. Good luck at Shot Show!

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