6 xc Load Data

[Teamor]

My new 6xc should be done soon and i just want to get a head start on some loads. Just to see what other people are shooting or even getting a good starting point for me.

stiller tac30 action
24" hart 1&7 twist
SRT O2 Shadow XL TI Can

 

[eagleskier]

Re: 6 xc Load Data

There is a thread for the 6XC in the reloading depot at the top. It has many loads for both various bullets and powders.

 

[shoepop]

Re: 6 xc Load Data

When looking over data start low with the 1/7 twist, your going to see pressure with 105 grain + a lot sooner than a 1/7.5 up. You wouldn't think a .5 difference would make diddly squat but it does.

 

[Tommy Two Dogs]

Re: 6 xc Load Data

I am running a 7.5 twist and 107gr. Sierras with 38.5grs H4350. I would be drop the charge weight if I were shooting a 7 twist.Hope this helps some.
Best
TTD
PS: What brass are you using?

 

[psinclair]

Re: 6 xc Load Data

I shoot 115gr VLD's with Norma brass, Russian primers and 39.5grs H4350. Barrel is a MTU Bartlein 1-7.5" 5R. I have one box of 100 brass that I've loaded and shot 12 times.

 

[Teamor]

Re: 6 xc Load Data

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Tommy Two Dogs</div><div class="ubbcode-body">I am running a 7.5 twist and 107gr. Sierras with 38.5grs H4350. I would be drop the charge weight if I were shooting a 7 twist.Hope this helps some.
Best
TTD
PS: What brass are you using?

</div></div>

norma brass

 

[95LTZ]

Re: 6 xc Load Data

If you are going to shoot 115's I think if you start around 37.5 grs. of H4350 & work up you should be just fine. I feel the others are correct in that with a 7 twist you will run into "peaky" pressures up near the upper end. If you choose to try H4831SC I don't think you can get enough into the case to cause real high pressure problems.
.5 gr increment ladder test should prove interesting. I have also had pretty good luck with H100V in the 6xc.
Semper Fi

 

[shoepop]

Re: 6 xc Load Data

Don't discount RL17, I have been having great success with it in both a 24" Krieger and a 26" Bartlein. 3000+ with both using 115 DTAC's. Started keeping track of brass "Norma" up to 7 reloads primer pockets still tight. A good RL17 in 6XC link .

http://www.6mmbr.com/reloder17.html

 

[WhiskeyWebber]

Re: 6 xc Load Data

RL17 gave me impressive velocities but my groups and ES were larger than 4350. I got to 3100+fps with RL17 so it definitely is the speed king. My groups were about .5 MOA with RL17 which is still definitely great; my best 4350 group was a ragged one-holer .1 to .2 MOA. I've got 8 lbs of 4350 so I'm going to go with that for the short term. My thought is I might as well have more precision if I can get it. The question is will that RL17 lead to more first round hits in a tactical match because of reduced drift? I may come back to RL17 after a few comps. I have a box of DTACs to try after I run out of the Bergers. Here's my favorite load so far:

39.5g 4350, 26" Bartlein 5R, Barnard Action, Norma Brass, Wolf Magnum Primers, 115g VLDs that I ogive sort and use a Redding Match micrometer seater .020" off. My Chamber is 2.750" OAL so I load to 2.730" OAL. I haven't experimented with different seating depths yet since this load works already. The VLDs show a lot of seating depth if I don't sort them, I've been told the DTACs don't show as much variation. I also run each round through the Hornady concentricity gauge and correct any runout.

 

[shoepop]

Re: 6 xc Load Data

Whisky what will your Berger load hold 300 to 1000?

 

[Conrad]

Re: 6 xc Load Data

38 to 40 grains of H4350 under a 115 DTAC seating dictated by your particular throat typically does the trick and easy to find a very accurate load with. A lot of people really like the 105's too. Curious about some of the newer powders also. Have some RL17 to try. Not a lot of data on the 100v or superformance though. Still lean towards H4350 for overall stability.

 

[WhiskeyWebber]

Re: 6 xc Load Data

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Mark S</div><div class="ubbcode-body">Whisky what will your Berger load hold 300 to 1000? </div></div>

I'm headed out to 1000 tomorrow to see. I'll post the results. I may even have a five shot group to share, we'll see

I've had RL17 out to 850 but it was a mild 38g load and I forgot to write down the elev... but I was hitting a 6" target at 850

 

[Paladin2147]

Re: 6 xc Load Data

My match load in a Tubb rifle was 39.7 of H-4350 in a Norma case with a BR-2 - DTAC 115 at mag length. Easy bolt.

 

[Conrad]

Re: 6 xc Load Data

Looking forward to your report Whiskey.

 

[WhiskeyWebber]

Re: 6 xc Load Data

OK, I shot at Hawk's Ridge yesterday afternoon and I was at 6.4 to 6.6 mils on the 6XC which was about the same setting as my .338LM shooting 250SMKs and 235g Predators. I started at 6.4 and as the day cooled off and the wind changed I bumped it up to 6.6. Shooting at Hawk's Ridge is a challenge as the wind can dramatically affect both your vertical and your drift. You have to shoot groups quickly if you want to stay on the paper. The wind was gusty/swirly and about 10-18mph. It is a great place to experiment with your wind reading skills.

Since I haven't chronoed this load, I can go back into to the shooter program and manipulate the MV until I get this same elevation setting. I have a picture of my best 4 shot group that I can post. I haven't measured it but I would say it's about 6-7 inches.

 

[WhiskeyWebber]

Re: 6 xc Load Data

Here's the photo of the group. I just measured it at 5.6". I shot it with a bipod and a bag and yes I stopped at 4 shots because I saw that all four of my puffs of sand behind the target were in the same spot... I wussed out on the 5th

The orange dots were my pasters from prior groups.

 

[shoepop]

Re: 6 xc Load Data

Nice shooting, I hear you on not sending shot 5

. 6.4 mil is exactly what it takes me with DTAC running @ 3034. You have to be faster I was at 7100 DA.

 

[WhiskeyWebber]

Re: 6 xc Load Data

Hmmm... I just ran the JBM calculator and if they have the 115g Berger VLD BC correct I derive the MV to be around 3060- 3080fps... seems fast

 

[shoepop]

Re: 6 xc Load Data

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: WhiskeyWebber</div><div class="ubbcode-body">Hmmm... I just ran the JBM calculator and if they have the 115g Berger VLD BC correct I derive the MV to be around 3060- 3080fps... seems fast </div></div>

That's hookin it. RL17 or H4350?

 

[WhiskeyWebber]

Re: 6 xc Load Data

39.5g of 4350 so 3060fps seems a little too fast to me to believe it. It's derived and I had to estimate the temp/press/altitude so I may have made an error there too. I need to chrono to be for sure as I was expecting to see about 2950-2980 fps.

Well, I went with 6XC because I wanted a flat shooting gun. I was pretty amazed to see it shooting inside of a .338 elevation wise. The .338 still had it beat from a wind drift perspective though.