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#3244464 - 05/15/20 11:07 AM Re: 6.8 case variants [Re: TXCOONDOG]
Roscoehd Offline
Predator Master

Registered: 09/05/15
Posts: 73
Loc: MN
my 6 Dtech is running 58 gr v max 3520 with H322, 20" barrel.

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#3244500 - 05/15/20 07:10 PM Re: 6.8 case variants [Re: steve garrett]
DiRTY DOG Online
Die Hard Member III

Registered: 08/27/09
Posts: 2760
Loc: West
Originally Posted By: steve garrett
Also as much as I prefer something 6mm in just about everything. if you wanna shoot light 6mm at warp speeds you only have 3 choices. 55's in nosler, ( I can't get nosler to shoot when loaded full house in ANY ar 15 I have tried them in) 55's in sierra's, less optimal bullet because its flat base and brick like BC. Or 58grain vmax's The extra weight gives up some speed and the vmaxs are built to explode which may or may not be what you want

Have you tried the 55gr Nosler Ballistic Tip Lead Free? Fantastic bullet. 5 shots:

_________________________
Aim small miss small.

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#3244684 - 05/18/20 09:15 AM Re: 6.8 case variants [Re: TXCOONDOG]
bark Offline
Seasoned Member

Registered: 11/18/13
Posts: 390
Loc: s.e.s.d
Originally Posted By: TXCOONDOG
Looking to build a dedicated predator rig and trying to stay away from the AR 10 platform.

I donít save hides so pelt damage is not a concern. At times we get temp swings from 90-30 degrees so I like powders that are not affected as much by huge temp swings.

I also hunt suppressed so barrel lengths 20Ē and under work best for me.

I believe the 6.8 case variants will offer the best options for me using the 58 grain V-Max bullets in the 6x68.

I believe the 1:10 twist would work best but not sure about barrel length and powder to push a 58 grainer to 3000-3100.

Any help or suggestions are appreciated.



I have a 20" barrel that I'm using to launch 87 grain vmax's at 2900 fps using varget. I think you could get 3100 fps using 55 grain bullets and varget, but has been stated by others, using xbr8208 I've seen speeds over 3500 fps with 55-58 grain bullets.

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#3244695 - 05/18/20 01:42 PM Re: 6.8 case variants [Re: TXCOONDOG]
TXCOONDOG Offline
Die Hard Member II

Registered: 03/21/11
Posts: 1672
Loc: TX
Iím sure this will vary by manufacture since there isnít a SAAMII spec. What is the freebore in the 6x6.8 ?

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#3244701 - 05/18/20 02:31 PM Re: 6.8 case variants [Re: TXCOONDOG]
GLShooter Offline
PM Sponsor

Registered: 01/09/05
Posts: 5063
Loc: AZ
Originally Posted By: TXCOONDOG
Iím sure this will vary by manufacture since there isnít a SAAMII spec. What is the freebore in the 6x6.8 ?


The 6X6.8 as designed by Ritch was built around the 58 VMAX and bullets up to the 87/90 range at mag length. The freebore is set at ZERO. The current ones from Tactical Ordnance that Ritch sells are to this spec. Those from BHW are all over the map and are nothing like what they started with.

Greg


Edited by GLShooter (05/18/20 07:15 PM)
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#3247340 - 06/27/20 02:57 AM Re: 6.8 case variants [Re: TXCOONDOG]
greshamshooter Offline
New Member

Registered: 01/17/17
Posts: 19
Loc: Gresham, Oregon
I just purchased used 6x6.8 and am looking for a set of dies. Where should I look first? I went to CH4D but it was not listed so I will have to call on Monday. I was reading on the black hole board and am getting information about this caliber. Any advice would be great. Thanks

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#3247345 - 06/27/20 06:54 AM Re: 6.8 case variants [Re: TXCOONDOG]
varminter .223 Offline
Die Hard Member III

Registered: 03/01/10
Posts: 2593
Loc: south central Illinois
I believe Hornady will build you a set for 125 ish. If you can't wait Im sure I or a few others here would size some for you to get you going.


Edited by varminter .223 (06/27/20 07:09 AM)

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#3247349 - 06/27/20 10:33 AM Re: 6.8 case variants [Re: TXCOONDOG]
GLShooter Offline
PM Sponsor

Registered: 01/09/05
Posts: 5063
Loc: AZ
You gave to phone order from CH4D. They are called the 6MM REMINGTON SPC. I was the one that provides the drawings for them. Last I checked a few months ago they have them in stock.

Greg
_________________________

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#3247371 - 06/27/20 09:01 PM Re: 6.8 case variants [Re: GLShooter]
greshamshooter Offline
New Member

Registered: 01/17/17
Posts: 19
Loc: Gresham, Oregon
Thanks for the information Greg. Also on a side note. Where would I find some load data to get me started?
I have been loading 25-45 for a while and then moved over to 6-45. I really like the 6mm bullets for the variety. This is what got me to try the 6-6.8. Thanks in advance for the information.

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#3247373 - 06/27/20 09:32 PM Re: 6.8 case variants [Re: TXCOONDOG]
varminter .223 Offline
Die Hard Member III

Registered: 03/01/10
Posts: 2593
Loc: south central Illinois
What bullets are you wanting to shoot? H322 and 8208 are temp stable powders that work well in the 55 to 60 grain pills. AR Comp works well with 70s.

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#3247377 - 06/27/20 10:58 PM Re: 6.8 case variants [Re: TXCOONDOG]
greshamshooter Offline
New Member

Registered: 01/17/17
Posts: 19
Loc: Gresham, Oregon
I want to shoot 55 gr to 90 if possible. I purchased a lot of bullets for the 6x45 so I want to be able to use them for both if possible. I am not sure how it will shoot. I picked it up used for black hole. This is the older model so I feel good about it. Donít want any of the new ones. I have heard some horror stories so far.

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#3247385 - 06/28/20 07:59 AM Re: 6.8 case variants [Re: TXCOONDOG]
varminter .223 Offline
Die Hard Member III

Registered: 03/01/10
Posts: 2593
Loc: south central Illinois
I have had a few bhw 6x6.8s and still have a 22" 10 twist. Only thing it shoots well is a 55 varmageddon hp with 31.5 8208. I seat them to a very short oal. 31 to 31.5 grains of 8208 with 55s and 58s is a popular load and with 70's ballistic tips I shoot 29.7 ArComp. 30 is basically a full case and shoots as good but will take out primer pockets after a couple firings. I use Hornady brass. H322 is a fast powder for 55s and 58s. I can't remember how much I loaded but it was around 30 to 31 grains.


Edited by varminter .223 (06/28/20 08:00 AM)

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#3247389 - 06/28/20 10:19 AM Re: 6.8 case variants [Re: TXCOONDOG]
GLShooter Offline
PM Sponsor

Registered: 01/09/05
Posts: 5063
Loc: AZ
PM sent.

Greg
_________________________

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#3247405 - 06/28/20 06:05 PM Re: 6.8 case variants [Re: varminter .223]
greshamshooter Offline
New Member

Registered: 01/17/17
Posts: 19
Loc: Gresham, Oregon
That is some good information. I donít have that powder. I do have the others so I will have to get the IMR. That will give me a few ideas to start. I canít wait to call of my dies to get the process going. I have been making a note book and logging data to start. I was thinking about backing the data off by 5 percent just to be safe. I donít want to be popping primers on the get go.

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#3247541 - 07/01/20 12:25 AM Re: 6.8 case variants [Re: TXCOONDOG]
dozer_xj Offline
Seasoned Member

Registered: 07/09/17
Posts: 220
Loc: South Central IL
I have had several.

6x6.8 22" from RPG . Shot 70s with ar comp 3300 fps . Great gun. Sold it because I'm dumb. 58s at 3600+ with h322

6dti. 22" Didn't own it long because I already had the 6x6.8. Didn't give it much effort. Sold it to a guy in Nebraska and last I heard he loved it.

I now have an 18" 25dti. 70 grain Sierra's at 3250 with h4198. This is a winner in my book for under 300 yards. Love it.


Edited by dozer_xj (07/01/20 12:27 AM)

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