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Thread: New 6.8 round.

  1. #21
    Boolit Grand Master






    Lloyd Smale's Avatar
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    why would the military be interested in a barrel burner that ran those kinds of pressures. Seems not only barrel life but the pounding a light weight gun would take at that level would make them short lived. Don't you find it ironic that we seem to allways be looking for a replacement for the 556 and Russia recently did field a new round and its closer to the 556 then anything else. Most of this is more for the walter middy civilian that wants to come across as a ballistics expert then the solder that actually has to kill people. In the last couple years ive hear there adopting the 6.5 creedmore, 6.5 Grendel, various 6.8s. 300 bo and other versions of it and a number of others. Guys even claiming the military already has them in the field. Ask someone that is actually fighting and they haven't seen a single one. Why? Because the gun they have now just plain works! Ill make a 2 for one bet with anyone here. My 50 bucks against your 25 that 10 years from now our infantry is still carrying M16s or some variation of it and its still chambered in 556.
    Quote Originally Posted by Valornor View Post
    The latest and greatest “future” military cartridge seems to be the 277 Fury being marketed by Sig.

    It has a two piece construction, with a stainless steel head and a brass body. They claim to reach a service pressure of 80kpsi.

    I’m waiting on it to get SAAMI approval before I get to interested in it.




    Jay Andrew
    www.theballisticassistant.com
    Last edited by Lloyd Smale; 01-17-2020 at 08:10 AM.
    Soldier of God, sixgun junky, Retired electrical lineman. My office was a 100 feet in the air, closer to God the better

  2. #22
    Boolit Grand Master popper's Avatar
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    Like LE is changing to 5-7. Or worse, 357 sig.
    Whatever!

  3. #23
    Boolit Master
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    The military have been researching the caseless ammunition for decades now. There is a strong allure to it though. Less weight to carry, good energy delivery, etc. So they may one day pull it off too. But not anytime soon though. Daisy had come closest so far with their civilian .22 that used caseless ammunition. But they weren't a gun manufacturer and the Feds stopped them. Or we would have seen more guns that used caseless ammo. Daisy's caseless ammo wasn't waterproof and the ammo was a little on the fragile side if you tossed a handful into your pocket to carry on a long walk or hunt. But if you took care of it, it did work.

    I suspect that something like a mini railgun system that can be carried by a solder will be the winner in the future. The bullets may wind up being more like needles with it, but launched at hyper velocities. But you could load up a thousand rounds in the magazine and carry a few more mags with you too.

  4. #24
    Boolit Master
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    This is a two piece case, not caseless. Past attempts have not been successful due to gas leakage at the junction point under high pressure and this is a really HIGH pressure round. A split in a brass case at this point is called a "K" split and will vent gas and likely damage the chamber and possibly the receiver and be dangerous for the shooter if not wearing safety glasses. Any venting of high temp gas at 80K PSI will certainly damage the chamber and possibly destroy the weapon and injure the shooter. Curious to see how this goes, not so much in thr R&D phase but in real world use.

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Abbreviations used in Reloading

BP Bronze Point IMR Improved Military Rifle PTD Pointed
BR Bench Rest M Magnum RN Round Nose
BT Boat Tail PL Power-Lokt SP Soft Point
C Compressed Charge PR Primer SPCL Soft Point "Core-Lokt"
HP Hollow Point PSPCL Pointed Soft Point "Core Lokt" C.O.L. Cartridge Overall Length
PSP Pointed Soft Point Spz Spitzer Point SBT Spitzer Boat Tail
LRN Lead Round Nose LWC Lead Wad Cutter LSWC Lead Semi Wad Cutter
GC Gas Check