6XC ground truth as of Jan 2020?

[Boatschool02]

Hello,
Where does this cartridge stand?
(Components geared to 6XC or 6XC II?)
JGS has the 0.4714 reamer, so which if any of these are cross compatible out of the box, in addition to the dies from RW?
Thanks,

0.200 line for current production brass:
Norma?
- loaded neck diameter?
- case volume?
Peterson?
- loaded neck diameter?
- case volume?
Alpha?
- loaded neck diameter?
- case volume?

Off the shelf die compatibility at 0.200 line:
Redding?
Forster?
Wilson?
Whidden?

Thanks,

 

[NV_Dmax]

I have a couple different 6XC reamers. I was using the 110smk and rl26. Barrel only lasted 900rounds and died. I can tell you now that the Whidden die gets clicks after a few firings and does not size the base enough at the .200 line. I think if you get Dave Tubb’s reamer and dies things are better. I scrapped the 6XC; went BRX and will never look back.

 

[zipollini]

Check out David Tubb's Facebook pages on the 6XC stuff. All your answers will be there. I use David's reamer from Manson as well as his sizing die and a Wilson bullet seating die with 21st Century hydro press. Shoot DTAC 115 RBT at approx. 2950fps with 39.5g H4350 and my T2K shoots .25MOA all day.

 

[J.d. Popkes]

Hello,
Where does this cartridge stand?
(Components geared to 6XC or 6XC II?)
JGS has the 0.4714 reamer, so which if any of these are cross compatible out of the box, in addition to the dies from RW?
Thanks,

0.200 line for current production brass:
Norma?
- loaded neck diameter?
- case volume?
Peterson?
- loaded neck diameter?
- case volume?
Alpha?
- loaded neck diameter?
- case volume?

Off the shelf die compatibility at 0.200 line:
Redding?
Forster?
Wilson?
Whidden?

Thanks,

Love mine

Reamer from grizzly, throated to a dummy round seated above possible donut. Peterson srp brass, 268 loaded neck diameter. widden full length bushing and seater die. I shoot 108 Bergers at 3080. With RL16. It shoots better than me. No drama. 26” muller 7 twist. My experience which is limited to one barrel, is its easy like a BR.

 

[J.d. Popkes]

Off a bipod at a hundred. 5 rds

 

[Walt Krafft]

Manson/Tubb reamer. Sig 22-250 brass. Works flawlessly in rapid and long range.

 

[F224]

My custom Blaser rifle barrel maker did a 20” 1-8 twist barrel for me from a Krieger blank. It’s built for coyotes and shoots 70gr BlitzKings at a sedate 3300+ FPS into 3/4” groups at 200 yards. The chamber was set up to work with Norma factory ammo, not sure what reamer he rented to do the chamber.

Interestingly enough, I get very little POI shift when I put on the suppressor.

 

[AckleymanII]

If you want to go whole hog, form brass with Paul Bike's form dies with 308 Palma brass.

Using Rem 7 1/2, 31" barrel, I got nodes at 3050,3150, and 3270. The brass will never wear out at 3150 shooting 107g Sierra's. H4350 was the powder I used except the 3270 node which was R#17. I put 900 rounds on 30 pieces of Palma brass, and all but 9 are still going strong. Load development with the R#17 opened up pockets a little.

With my experience with only one long barrel, this was a very, very easy round to tune with Sierra 107's pointed.

I and family hunt deer and hogs. I formed brass from PMC 308 once fired brass and Lake City New brass. Accuracy is unbelievable in this garbage brass. So, I tried forming brass from some once fired Chinese military brass, groups were still in the very low 2's, but pockets did not last as machine gun chamber had unreal pressure on the brass as I expected. The kids never pick up the brass.

I am going to chamber some old benchrest barrels in slow twist barrels for testing sub 90g varmint weight bullets using AR Comp.

To me, I certainly had an easier time tuning the 6XC vs two of the 6 Dashers that I have shooting H4895 and Varget which seems to be one fickle bitch to deal with.

 

[STOMP442]

I use the PTG Reamer purchased from Grizzly and haven't had a problem or issue one. I have built 5 or 6 rifles chambered in the 6XC all with 26" barrels with hunting in mind. All of them are running the Berger 105 vld or Hybrid at or just over 3000 fps with either H4350 or R16 in Norma brass and CCI #200 primers. I am using Redding dies for mine.

 

[tomswede]

Have two barrels chambered with a PTG CiP reamer. No issues with Norma and Peterson brass.

 

[urbanrifleman]

If I did the 6xc I would get the Tubb spec reamer from Manson or from Tubb and shoot the 115 DTAC coated exactly like David. Use Peterson SRP brass from Tubb with Rem 7.5 primers. H4350 or R16.

But then I've shot David's setup... if I could shoot beyond 600 a lot that is all I would shoot. Out to 1500 yards we were shooting insane small.

Tubb will be shooting F Class serious this year. He will be shooting my bag rider design. He is shooting the 115 at 3200 fps. Someone should run those numbers.

 

[AckleymanII]

115 DTAC at 3200 is one heck of a load!

 

[TAJ45]

Sounds plenty stout to me also. Maybe he doesnt need to worry about brass longevity?

 

[Kurz]

115 DTAC at 3200 is one heck of a load!

Sounds plenty stout to me also. Maybe he doesnt need to worry about brass longevity?

When you're trying to prove your products AND stay on top of the competition, brass life just might take a back seat to being competitive. Besides, David has been competing for a long time and might have a couple of tricks up his sleeve yet. He could be the sly fox in this situation but not letting the ideas out of the bag right away. But plans can change, loads and velocities mis-remembered or circumstances prevent achieving a desired performance level. Anything is possible.

I have the newest version of the chamber reamer, new XC brass, the newest version of the 115 DTACs with the rebated boat tail and David's dies. I also bought a set of Whidden dies to set up also. I used 6 powders with MRP, IMR-7828SSC and VVN-560 getting a full case and up to the level of performance I wanted which was at or very near 3,200 fps. And yes, it's a full case, stout load but still well within the limits of the suggested pressure curve. I did not test brass life since that's not usually a big concern for me, although I think I have 4 loads each on the 50 pieces of brass I used for testing and breaking in the barrel. The primers are still tight and the cases can be sized correctly with annealing. ES and SD were not single digits but consistent and reasonable.

ADDED:

I forgot, this is from a 30" barrel in an F-Class type chassis. The cartridge length is a tad below magazine length so I can use this same load fed from any detachable or fixed magazine.

 

[tclaunch]

Hello,
Where does this cartridge stand?
(Components geared to 6XC or 6XC II?)
JGS has the 0.4714 reamer, so which if any of these are cross compatible out of the box, in addition to the dies from RW?
Thanks,

0.200 line for current production brass:
Norma?
- loaded neck diameter?
- case volume?
Peterson?
- loaded neck diameter?
- case volume?
Alpha?
- loaded neck diameter?
- case volume?

Off the shelf die compatibility at 0.200 line:
Redding?
Forster?
Wilson?
Whidden?

Thanks,

The .4714" @ .200" is the XC II version off 308 winchester brass, not 22/250. Dies you want are from RW and are Redding. Norma brass for sure works, but this was before Peterson threw its hat in the ring. I had a new JGS reamer, but sold it after loosing interest. I did chamber one for junebug in a 10 twist and set back an 8 twist. His shot very well. Wilson also sells 2 diameter seaters.

 

[TAJ45]

Doesn't the massaging from 22-250 cases leave oal case length measurably short?

 

[tclaunch]

Looks like there is .008" difference. 22/250 being shorter.

 

[TAJ45]

Bad memory or maybe info I regarded as solid. Obviously didn't look up the print.
If that is raw before ff, maybe lose another .015 or so forming? Have never formed from 250 brass so do not know.

 

[tclaunch]

Looking at Peterson, 6 XC brass seems David Tubb, was behind them making it to his specs. I would be reserved about dimemsions, till it was proven to be based off 308 Winchester.

 

[tclaunch]

Well, a quick call to "Ben" at Peterson Brass, tells the story. Their 6 XC Sammi at the .200" line is .465". I then asked about the 308 Winchester and it is .470" so there you have it. It is smallish for the XC II, but would work.

A quick review to sammi manual says 22/250 minimum is .4668" so I'd say Mr. Tubb should be happy. The Peterson is truly made off his design based off the 22/250.