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Thread: 6.5 grendel brass

  1. #1
    Warrior Grimmy's Avatar
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    6.5 grendel brass

    Ok still waiting on upper. But have a question. Is making brass out of 7.62x39 worth while or not. Had a bolt gun and still have a 16inch sks paratrooper. (now currently regreting letting the bolt gun go could of had a bolt Grendel) Only shoot steel case stuff out of the SKS. So I have some brass laying around is it worth converting or not?

  2. #2
    Moderator bwaites's Avatar
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    Totally dependent on how much your time and effort is worth.

    Most people did the conversion when Grendel brass was hard to come by, now that it is readily available from multiple sources, most believe it isn't worth the hassle. When you figure in the time and components involved to do so, its a break even proposition at best.
    Gun Confiscation WILL NOT Happen In My Lifetime. Pat Kelley 1998

    NOR IN MINE!

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    Moderator LRRPF52's Avatar
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    I have a bunch of 7.62x39 fire form loads done up from maybe 2 years ago, and I still have zero reason to mess with them. I don't even have a reason to mess with my pulled PPU brass either, especially since it's large rifle primer. I have so many boxes of Lapua Grendel brass, that it makes zero sense to mess with anything else, and all my brass has been given to me by friends, including my first box of Grendel brass.

    I would have to work up a different load with the PPU brass, but it's an option for hunting brass that might be sacrificed in the field.

  4. #4
    Chieftain txgunner00's Avatar
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    I currently fire form with sub-sonic loads then use the formed brass for hunting / plinking loads where recovery is unlikely. I don't use it for target loads or where I want to maximize performance.

  5. #5
    Warrior Bwild97's Avatar
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    The hardest part of fire forming 7.62x39 into Grendel brass for me, is the expense of the of the projectile. There just isn't a projectile under $19.00/100. And I have about 1500 7.62x39 cases to re-size and fireform. If you plan on reforming brass for your Grendel, get a set of 7.62x39 dies (or just a sizer die) as well or you will ruin alot of the brass trying to re-size it straight to the 6.5mm diameter. Use the 7.62 sizer die to deprime and bring the mouth of the case to a near perfect circumference. You will not need to full stroke with the 7.62 die so there is no need to lube the cases for either of the sizing operations; only after you have fired the 7.62 case into a Grendel case will you need to lube for full length sizing, and every time then on till you discard the case. Its not a difficult task, just time consuming, and in the end; I feel for me, that it is worth the effort! I have a batch of 7.62 cases on their 5th reload!


    PS: Stay away from Winchester Large Rifle Primers, the cups are very soft! I have used S&B LR and Wolf .308 primers with good results!! Also when Fireforming 7.62 cases use a powder charge close to or just under the starting weights and seat a smidge deeper, I use 25gn of Benchmark and seat Sierra 120gn Spitzers to 2.225" COAL.

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    Moderator bwaites's Avatar
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    You can use a plug of cream of wheat, or something else similar to fireform, but unless you have lots of brass, its still is a borderline effort.
    Gun Confiscation WILL NOT Happen In My Lifetime. Pat Kelley 1998

    NOR IN MINE!

  7. #7
    Warrior
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    Grim Ditto what every one else said plus the case volume is about 2 grains less than the 6.5 Grendel case. In the end you will have a case that won't last very long and if you do the math they will be more expensive than the AA or Lapua cases. I did it at a time when there were no Grendel cases available and got an exceptional deal on 400 brand new 762x39 win cases. You should really avoid once fired cases for reforming unless you anneal them before sizing. I have some of those reformed cases on their 6th reload but the primer pockets are getting loose.
    Last edited by rasp65; 04-10-2012 at 09:48 PM. Reason: punctuation

  8. #8
    Warrior
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    One more thing if you use the cream of wheat you will get a lot of crap in your gas system. I have used this method while fireforming other cases and could not believe the amount of flame broiled CoW was left in the barrel. I would not want that in my gas system.

  9. #9
    Moderator LRRPF52's Avatar
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    With the availability of Lapua brass, especially from AA at their prices, there is little reason to mess with fire-forming 7.62x39 brass. The time investment equals higher cost to me, since time is so valuable. Then looking at the longevity I get from Lapua cases, and the law of diminishing returns takes over.

  10. #10
    Chieftain sneaky one's Avatar
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    If you can find good 7.62 x 39 brass, say- fed., Imi, rem., win., sell & bell., and some cheapo--gun show bullets-save them all for the future, tuck them away. Try to use the good stuff now, enjoy the best. If you lose 1-2 Lap-AA per deer hunt season = oh well,, $1.00 gone., In the case of say,-- txgunner-- I would use the cheapo stuff now- = overrun with pigs, and not enuff hep to cull the herd long enough to make a dent in population there . I would fireform always-with cheap ingreeds.- to make up some Grrrr. brass.. I'll ask the atk boys here if they could donate some brass & bullets to the hog control issue.. hmmm.

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