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Thread: 6MM SUPER LONG RANGE

  1. #16
    Xdeano
    Guest

    Re: 6MM SUPER LONG RANGE

    Im the guy from over on nodakoutdoors that has one of these crappy cartridges. Ill just say if youve never shot this round you should just go sit in the corner and color. This cartridges maybe a reinvention of the wheel but what is any cartridge? I can easily run my 6slr up to 3200fps in a 24" barrel. But i have a barrel node at 3150fps. I dont get pressure signs until im up past 3200 a ways. These numbers are with the 105g hunting vld.

    So if you're thinking of a round where you dont have to fireform brass and is scarry accurate with the lowest es/sd numbers that ive ever done with cheap win brass give the slr a try before you knock it off the list.

    When i was looking for a new cartridge the cm came up but i chose the slr because of the extra work involved in the cm. I just load and go.

    The cm is only slightly larger case cap than the 6slr. You're buring a hair more powder with a shorter neck and most guys are still gett 3-4000 rounds through their cm. Im hoping for similar in the slr. The cm is blown out the slr is crushed down. Take your pick. Either one is an awesome little round. But ill bring you back full circle with fire forming. I hate fireforming.

    Xdeano

  2. #17
    Paid Member Blue Avenger's Avatar
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    Re: 6MM SUPER LONG RANGE

    Quote Originally Posted by helotaxi
    The .243WSSM goes over the edge quickly. Rather than pressure signs showing and getting worse with incremental powder increases, it goes from no pressure signs to signs of being way over pressure in one powder increment.
    NO! It has been over pressure all along! It finely just showed to far over!
    That is why we have books that have limits not to exceed. And calipers to measure cases for expansion.
    .223 Rem AI, .22-250 AI, .220 Swift AI .243 Win AI, .6mm Rem AI, .257 Rob AI, .25-06 AI, 6.5x300wsm .30-06 AI, .270 STW, 7mm STW, .416 Taylor

  3. #18

    Re: 6MM SUPER LONG RANGE

    Quote Originally Posted by Blue Avenger
    Quote Originally Posted by helotaxi
    The .243WSSM goes over the edge quickly. Rather than pressure signs showing and getting worse with incremental powder increases, it goes from no pressure signs to signs of being way over pressure in one powder increment.
    NO! It has been over pressure all along! It finely just showed to far over!
    That is why we have books that have limits not to exceed. And calipers to measure cases for expansion.
    I never said it wasn't over pressure. The point is that it doesn't show the signs of being over pressure until its WAY over pressure. You have to rely on the books and the chronograph, not "reading" cases.

  4. #19
    Xdeano
    Guest

    Re: 6MM SUPER LONG RANGE

    Here is a pic for a comparison.



    243, 6mmCM, 6mmSLR

    Again the SLR is formed by compressing a 243win case down to 30 degrees and about .1 longer neck. The 6CM is a blown out case. It's formed basically the same way as a 243AI would be. (Fireformed). The cool thing about forming the SLR is that you can actually get .0015 head spacing with virgin brass by specing it off your chamber, so no fireforming. I resize my brass by doing a .0015 shoulder bump so it's consistent every single time. It loads and extracts like silk.

    I'm a poor lazy ******* and would rather blow powder and bullets on what it's intended to be used for and not have to worry about wasting barrel life, and brass life.

    But then i've got a buddy that's shooting a 115g out of his 243 at 3100fps, with no pressure signs, just a powder that he's cooked up. Unreal.

    xdeano


  5. #20

    Re: 6MM SUPER LONG RANGE

    Im real interested in the slr for my savage project. Suggestions for a turn key barrel?

    Thanks!

  6. #21

    Re: 6MM SUPER LONG RANGE

    You are talking a 6CM barrel?

    You mentioned .25 MOA on your 3000 round barrel. If you don't mind sharing, what load?

    Do you use standard or magnum primers with the H1000?

    Thanks

  7. #22
    Xdeano
    Guest

    Re: 6MM SUPER LONG RANGE

    I'm using standard LR primers in the SLR with H1000 too, i do get an extra 100fps of velocity with a mag primer but my results are no more consistent. It's a nice tight powder column and ignition is just fine.

    xdeano

  8. #23

    Re: 6MM SUPER LONG RANGE

    Quote Originally Posted by DGD6MM
    115 DTAC, 48.7 H-1000, 2.860 OAL, WLR Primer, FPS-3153

    When I said have 1 chambered, I was talking about the 6SLR.
    Is it for sale? Or are you shooting it also?

  9. #24

    Re: 6MM SUPER LONG RANGE

    Quote Originally Posted by DGD6MM
    I own nothing but 6CM's. They are not Turn Key. If the 6MM Competiton Match had not been designed I would be shooting the 6SLR.
    Sorry, i misunderstood.

    I thought you meant, that you had one already chambered available...my bad

  10. #25

    Re: 6MM SUPER LONG RANGE

    Quote Originally Posted by Xdeano
    I'm using standard LR primers in the SLR with H1000 too, i do get an extra 100fps of velocity with a mag primer but my results are no more consistent. It's a nice tight powder column and ignition is just fine.

    xdeano
    Seems like most are going with the 4831. Has the H1000 worked better for you?

    Im hoping to get my SLR in a few weeks. We'll start working up the setup then.

    We already formed some winchester brass. It was so easy. A few had a bit of wrinkle just below the shoulder even with plenty of lube. I guess we do have to do have to rely on a bit of fire forming?



  11. #26
    Xdeano
    Guest

    Re: 6MM SUPER LONG RANGE

    Quote Originally Posted by Tonysnoo
    Quote Originally Posted by Xdeano
    I'm using standard LR primers in the SLR with H1000 too, i do get an extra 100fps of velocity with a mag primer but my results are no more consistent. It's a nice tight powder column and ignition is just fine.

    xdeano
    Seems like most are going with the 4831. Has the H1000 worked better for you?

    Im hoping to get my SLR in a few weeks. We'll start working up the setup then.

    We already formed some winchester brass. It was so easy. A few had a bit of wrinkle just below the shoulder even with plenty of lube. I guess we do have to do have to rely on a bit of fire forming?


    Yeah i got a little wrinkle in my brass also. Nothing to worry about, it'll blow out and it won't mess you up with load development. I like the H1000, it is a little cooler so barrel life will be extended a little more. I don't have the velocity with it though. If you want velocity go with the H4831sc or H4350. both are good velocity powders.

    xdeano

  12. #27

    Re: 6MM SUPER LONG RANGE

    Thanks

    I have my action and barrel back chambered and ready to go, so I'm working on the stock. Hoping to fire it in the next couple of weeks. I'm going to play with 105 amax's and 115 DTACs with the 4831sc and the H1000.

    I see lots of recomendations on bullet seating depth from .050 jump to .015 in the lands. That will be an interesting bunch of tests. Going to wear a barrel out just figuring out where to run it....LOL

  13. #28

    Re: 6MM SUPER LONG RANGE

    A fellow I met at a local show. He works with for a nearby com college and their gun smith program.

    Brunos had a kreiger barrel in stock. A reamer from 4D and we were set. Ill know more when we start shooting it.

    Im hoping to play out at 1000 as well as some long range varment clankers.

  14. #29

    Re: 6MM SUPER LONG RANGE

    I got to shoot five loads today (50 shots) out of my slr

    3 with 105 amax 2 with 115 dtacs . So far the nod goes to the amax with 43 gr of 4831sc.

    In fairness to the dtacs, i think i was getting shaky since they were the last of bunch. Ill have to do a dtac only day

    The gun makes me smile :)

  15. #30

    Re: 6MM SUPER LONG RANGE

    I've now got about 150 rounds down range. I'm still learning things. We have yet to chrony it. I've shot a long range silhouette and a 1000 yard match with only a little testing. It does better than I anticipated.

    My goal was to build an entry level shooter. Other than the kreiger barrel it still has the savage action, accu trigger and accustock. I've mostly shot DTACs and Amaxs with 4831 per recommendations, but now we are going to experiment with a bunch of different recipes and a chrony.


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