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New SAAMI cartridge - 6.8 Westerner

Discussion in 'Rifle Country' started by Gtscotty, Nov 7, 2020.

  1. mgmorden

    mgmorden Member

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    I'm guessing it's a reference to the original Terminator movie where the T-800 walks into a gun store and asks for a "phased plasma rifle in the 40 watt range". Arnold Schwarzenegger was a little less skilled at English back in those early days so it's quite possible that the script said megawatt and he goofed the line, but regardless it has entered pop culture ever since.
     
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  2. horsemen61

    horsemen61 Member

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    Anybody know what the H2O capacity is for this case and how is this different from a 270
    Wsm?
     
  3. Gtscotty

    Gtscotty Member

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    It's looks like the official announcement was a few days ago, with rifles from Winchester and Browning.

    https://www.ronspomeroutdoors.com/blog/68-western-new-winchester-browning-big-game-cartridge

    ^ Interesting list of new or in development bullets/loadings for the new cartridge.

    165gr ABLR
    170gr AB (I think this is a typo and it's actually a BT)
    175gr Sierra TGK
    162gr Copper bullet loading
    170gr OTM loading

    Really does seem like an almost ideal fit for antelope to elk western style hunting. I actually might have to pick one up, with all these new heavy bullets, it's almost identical in application to the fast twist 7mm WSM/SAUM I've been mulling over for a while.

    It is interesting to me that Winchester is using an 8 twist and Browning a 7.5 twist. I wonder if 8 is enough to stabilize the heaviest offerings like the 175gr TGK?
     
  4. Zahn
    • Contributing Member

    Zahn Contributing Member

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  5. Hog huntin Harry

    Hog huntin Harry Member

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    Sounds like, dare I say, the perfect Grizzly & big cat setup.
     
  6. gotboostvr

    gotboostvr Member

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    Sorry if someone's already mentioned. I looked but didn't see it, do we know what the parent brass is? I'd hate to adopt a cartridge like this and get left hanging in the wind without a way to make brass if need be.

    The WSM's aren't too bad, but things like the WSSM's and 30AR give me pause.
     
  7. Gtscotty

    Gtscotty Member

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    The Ron Spomer article says the parent case is .270 WSM.
     
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  8. gotboostvr

    gotboostvr Member

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    That's good news. There's plenty of that brass around. It's not cheap, but it's avaliable.
     
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  9. DocRock

    DocRock Member

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    Why? What benefit would a 270 Win gain from 1/2” shorter bolt throw and a few ounces of weight that would have them “jump on the option”. I am curious why you see this as a substantial advantage?
     
  10. troy fairweather

    troy fairweather Member

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    A few days ago I seen ammo at targetsports, it was $38 something so not bad.
     
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  11. DocRock

    DocRock Member

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    Once upon a time, the 25-06 was for varmints and pronghorns, the 270 Win was for little deer, the 30-06 was for big deer, elk and bear, and the 35 Whelen was for very big things indeed.

    But then marketing folks and their gun writer propagandists decided that because a very, very few people were capable of shooting animals at very long distances, they could sell things for shooting at very long distances to people who shouldn’t, but they would tell them that they could, if only they had the right rifle/cartridge...
     
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  12. Bacon buster

    Bacon buster Member

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    They definitely have this cartridge hyped up. I’m curious to see how the market holds up for it. If they are going to come out with new chambering they have got to get it together with ammo and reloading supply availability. Seems to me that it could be a nice option if it’s properly supported for someone who doesn’t have a 6-7 mm rifle for mid weight work.
     
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  13. Garandimal

    Garandimal Member

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    A .270 WCF... Plus.

    But seein' as I'm already wed to the .270 WCF/150 gr., and shoot generally less than ~ 350 yards...

    ... the advantages are out of my envelope.

    Especially in Louisiana and East Texas.




    GR
     
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  14. 98s1lightning

    98s1lightning Member

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    I'd like to see it necked up to 7mm.

    A 7mm "short" action (I know this new cartridge longer than the standard 2.800" short action but it still can be a more compact rifle) that can handle 162gr-175gr bullets

    I see the 6.8 western necked up to 7mm western being the perfect cartridge of leaving off where 284win stops (150gr bullets fit this cartridge best as heavies)
     
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  15. Garandimal

    Garandimal Member

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    In their announcement, Winchester mentioned to, "Check the Bbl. stamp," for the twist rate of any particular Winchester rifle, as 1:8" - is the initial offering.

    Sounds like they were already tooled for 1:8", but are willing to respond to heavier bullets down the road.




    GR
     
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  16. Garandimal

    Garandimal Member

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    A 180 gr. NP as long as my thumb... at ~ 2800 fps.

    :D




    GR
     
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  17. Gtscotty

    Gtscotty Member

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    I have been thinking about adding a fast twist .270 to the stable with these new bullets coming out. Other projects are ahead of it, probably because good deals on used rifles have evaporated, but a 7.5 or 8 twist barrel nut pre-fit for Tikka or similar would let you play with the heavies in a high pressure cartridge, but also shoot any other reasonable bullet weight or factory ammo just fine. I already have dies and several varieties of bullets left over from my various .270s, so no real road blocks to getting started, even in this ongoing component drought.
     
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  18. Garandimal

    Garandimal Member

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    Came up w/ this: A .270 WCF w/ the 6.8 W throat, and a COAL (3.600") that'll fill a M700 magazine.

    270-LAWGR.png
    ~ 4.5% more powder capacity for a 150 gr., or std. capacity for a 165 gr. ELD bullet seated to the base of the neck like a .270 WCF/130 gr..

    Add to that a 1:8" twist rifling.




    GR

     
  19. horsemen61

    horsemen61 Member

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    I still want to neck it down to 6.5!
     
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  20. Garandimal

    Garandimal Member

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    Wouldn't that be a 6.5 PRC...?




    GR
     
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  21. KsSkaEnthusiast

    KsSkaEnthusiast Member

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    So in my specific case this caliber is actually a great setup for me. I have 3 .270s that love the 130-145 grain bullets of which i have stocked up along with reloading components for .270. If i can stock bullets for the same diameter i can tune different loads for different causes and i can load down 6.8 with some 130 grains and a light powder charge to get extra practice with whatever rifle along with load up real heavy bullets in the 6.8 diameter for real large deer and elk.
     
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  22. horsemen61

    horsemen61 Member

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    No the 6.5 PRC is based on a .375 ruger case iirc

    the 6.8 western is based on a changed .270 wsm case so not the same but close I reckon
     
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  23. Newtosavage

    Newtosavage Member

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    Looks like the 6.8 crowd is jumping on the .284 Win bandwagon? I suppose it was just a matter of time now that the .284 Win has made a comeback.

    I'm working on a .284 Win build at the moment, but I'll be sticking with the 7mm because of bullet availability and because I also shoot a 7mm-08 and 7x57.
     
  24. gotboostvr

    gotboostvr Member

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    Are you building it on a short or long action?
     
  25. Laphroaig

    Laphroaig Member

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    It's the same concept, a case almost identical to the short magnums but shorter to accommodate long, high BC .264 bullets.

    Did anybody else see the 6.8 Westerner write up in the March American Rifleman? I though that it was a great explanation of the whys and wherefores of the cartridge until he started comparing ballistics between the 3 Winchester 270's. He compared factory offerings between the 3 of which I have no reason to doubt his numbers. In a nutshell he listed 270W 150 gr. MV at 2900 fps, 270 WSM 150 gr. at 2960 fps, and 6.8W 165 gr.at 2970 fps.

    However, I found the velocities that he chose to be suspect. First off, its been my experience that 270 WSM with 150's is anywhere from 150 to 200 fps faster than 270 W, much more than the listed 60 fps. Then, how can 6.8 W shooting a heavier bullet from a case with a smaller powder capacity actually be faster than the 270 WSM? Even using his numbers the 6.8 W drop is only 0.7" less at 500 yds. I realize that his job as a modern day gun writer is to sell a product, in this case the 6.8 W, but think that he was "stretching" the truth to make his point.

    I've been working with one of my sons handloading for his 270 WSM. He has a very accurate 150 Partition load at 3050 fps, and Federal Premium 150 Partitions chrono at 3150.

    I guess that it all boils down to if you need .277 high BC 165 and 175 gr. bullets. If you think that you do, go for it.
     
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