6XC + Varget

[RyanS]

Indeed I did. Not sure if there was to much in the bore. Groups were all over the place and when I pulled it through it came out absolutely black..

 

[Nomad47]

When you pulled what thru and it came out absolutely black? After coating the bore and shooting coated bullets, the first two or three patches will come out black - even after just two or three shots.
I try to run dry patches thru my bore every 20 to 40 rounds. And my cold clean bore is right there with the rest of the shots.
It sounds like you developed your load THEN coated your bore. I coated THEN did load development.

 

[RyanS]

Well good to know its supposed to come out black lol. Yep you got it i had my load then decided to coat. Not the best idea I guess lol
At any rate I did a ladder test today with 8208 xbr and alls I can say is wow! out of an 8 rd ladder ,5 went through the same hole at 200m. SPClark thanks a lot! I think ill be switching powders if this is any indication.

 

[spclark]

At any rate I did a ladder test today with 8208 xbr and alls I can say is wow! out of an 8 rd ladder ,5 went through the same hole at 200m. SPClark thanks a lot! I think ill be switching powders if this is any indication.

Hey no problem here just be careful with that stuff as it's easy to use too much, it's pretty dense. Seems very temp stable too; in Palma I've shot the same load @ 50° - 95° F with no significant difference in performance or pressure indications.

 

[hoverp]

SP, Have you tried the xbr with any 115's ?

What do,you,think of that combo?

 

[hoverp]

Anybody else tried this HBN coating on the barrel? Ive read all about it. I shoot nothing but DTAC HBN coated 115's, and when I clean my barrel(Schneider polygon) I take a HBN dry coated patch and push it back and forth through the bore a few times, but I don't know if it is doing any thing other than making a dry patch pushed through the bore after that process feel like its on ball bearings!

 

[RyanS]

Mc I've just been shooting my hbn coated bullets in a clean bore. Seems to have pretty much the same effect.
Next ill be shooting some groups with between 36.0 and 37.0 grs of 8208. Nice to use less power as well. it definately doesn't fill up the case like H4350. But hopefully that wont be an issue.

 

[spclark]

SP, Have you tried the xbr with any 115's ?

No, likely not going to either. I tried Tubb's 115's early in the life of the 6XC I had built intending to use them but never could get the accuracy I thought they ought to be capable of.

I think the fault lies in my choice of twist; 1:7.5 might have been a better choice than the 1:7.8 I ordered. I got fine accuracy in shorter 1:7.5's when I owned a T2k but only shot them to 600 yards.

Fallback was Berger's 6mm 105VLD that proved so accurate as to warrant no further work. At 3,125 fps they shoot just fine thanks out to 1,000 yards, the farthest distance I shoot to in a season. 6mm 105 Hybrids show promise too.

 

[hoverp]

Copy all SP. Im shooting them out of a Schneider barrel and they are doing great. but its a 1-7.5
so that could be it.

 

[spclark]

...so that could be it.

Yep, could be.

My T2k came with a Schneider 1:8 back in 2004, I had issues with it (pressure at absurdly lower load levels than what D. Tubb was suggesting, among others) I had two PacNor's fitted from John Holliger.

Berger's 115 in the original barrel was a mistake from the start, the DTAC's I tried next were better but still less-than-impressive & I couldn't get them going much faster than 2,550 without ruined cases and/or blown primers. In the PacNors I could get 2,750 & good accuracy @ 600.

The 105's work well enough for me I have some 115's left but unlikely to ever use them. In my LR rifle I tested speeds from 2800 up to 3200 & couldn't find a node that worked even at 300 yards so I gave up.

 

[hoverp]

I'm getting right at 2920 and only using 38 grains H4350. HBN coated. 1700 rounds into it and still great. Schneider 26 inch polygon. I had issues at first and sent him the barrel, he must have used a newer reamer throated for the 115's because it's rocks now and no pressure problems, great brass life on Norma brass.

 

[spclark]

Yes, there have been several iterations of the 6XC reamer dimensions in 10 years. My LR rifle was chambered with an at-that-time brand new reamer straight from Hugh Henrickson mid-2008, supposedly for the 115/117 DTACS.

I know it's got a longer freebore than my T2k barrels had; some "leftover" ammo proved to me the 105's can be jumped - a LOT! - and still shoot x's over & over.

 

[hoverp]

I'm jumping the DTAC 115 @ .025 and it really likes that. Better than on the lands.

 

[Jim See]

I have been having some changing elevation issues using H4350 in my recently new 6xc. After discussing it with a good friend who has seen the same issues we both went out and tried varget, him in a 6x47 lapua.
well last night I punched 3 groups in the .2-.3s at 100 and when the mirage settled down near dusk I sent down a 1.510" 600 yard group. This is in a 26" heavy tac gun off a bi-pod and rear bag. Barrel heating elevation problems didn't rear there ugly head last night so that problem ,which Scott has seen mostly in 6mm with 4350, seems to be a non-issue in the varget load, more testing to confirm.

Velocities went up to 3120, with ever so slight ejector marks on new brass so I backed it down to 3065 for the above groups.

using 105 berger hy

 

[RyanS]

Last weekend I shot my first match with the 6xc up at the home range of George Farquartson. Match is called the Frosty Farky. We shot 2 strings of 2 and 15 at 300m and then 3 strings at 500m due to the range being reworked for an 800m firing point.
I did manage to shoot a clean with 9v at 500 on the second day with the XC. 36.6 grains of 8208 did the job. Seems to hold pretty decent elevation.

 

[hoverp]

Last weekend I shot my first match with the 6xc up at the home range of George Farquartson. Match is called the Frosty Farky. We shot 2 strings of 2 and 15 at 300m and then 3 strings at 500m due to the range being reworked for an 800m firing point.
I did manage to shoot a clean with 9v at 500 on the second day with the XC. 36.6 grains of 8208 did the job. Seems to hold pretty decent elevation.

Bullet?, barrel length? twist? Brass? any idea on MV?

thanks

 

[RyanS]

Actually rechecking it was 36.3 gr of 8208xbr.
Sorry the rifle is a Remington. Bartlien 28" 1/7.8 5r. I'm shooting 105 hybrids out of Norma cases with BR 2 primers. Haven't had it over a chrony yet so no idea about speed.

 

[Nomad47]

36.0 grains 8208-XBR & BR-2 primers, 28" 8 twist Criterion barrel, 105 AMax hBN coated bullets. My chrony said 3172 MV (which I think is suspect - no sky screens, in the shade of the range roof). Thinking about trying 215Ms although the BR-2 groups look good.
Muzzle blast from the adjacent bench knocked off one of the sky screens. Since I set my chrony 2 feet in front of my muzzle braked barrel, I reached out and took off the other sky screen. Due to my chrony being somewhat erratic lately, I have made a one piece sky screen out of the material that political signs are made from but haven't tried it out yet.

 

[confuzed]

I cant get past 35.5 grains of 8208 with out pressure signs with a 1in7.5 schneider ! hopefully that sign is not from some anti gun politician

 

[RyanS]

Forgot to add my 105 hybrids are hbn coated too. Nomad what kind of groups are you getting at 300m moa wise? I think this thing should be shooting a little better.