300m varget ladder what ya think

[Pigdog]

123 scenars
COAL 2.788 15 thou off lands
6.5x47l, 26 inch shillen shot of atlas bipod
300metres
12 shots from 34.7-38 grains varget no pressure signs at all
Just what to check with the pros that ive got this right with the nodes, shots 4,5 and 6 (35.6, 35.9, 36.2) measured right on 1 inch of vertical shots 8,9,10 (36.8, 37.1, 37.4) measured just under half inch vertical.

Iam thinking nodes at 35.9 and 37.1 ??

On another note all my cases have black soot around the neck and shoulder. I read that this can be caused by low pressure however this cant be the case surely with mine as i still had soot at 38 grains of varget?? It is a tight neck turn chamber .286k neck. Is this causing any damage to my gun or is this just cosmetic?

 

[Zero333]

37.1 is my pick.
Soot on the neck ? Since you already turned the necks either skim them a little more or anneal the brass.

I've had soot on lapua brass in tight and loose neck chambers.

Never had any soot on Winchester brass.

 

[wholman]

Clean the neck of the chamber real good and soot might go away.
I would shoot the ladder again to compare
with first one.

 

[Pigdog]

Thanks guys I will have to look into a torch to anneal by hand as I can't afford a machine ATM. Does this soot do any damage to the gun in anyway that you guys know of ??

 

[Martin52]

I'd do more testing around shots 8,9 and 10.
+1 re Win v Lapua brass, I get soot on half the neck with Lapua but nil in Winchester, no explanation though....

 

[seymour fish]

123 scenars
COAL 2.788 15 thou off lands
6.5x47l, 26 inch shillen shot of atlas bipod
300metres
12 shots from 34.7-38 grains varget no pressure signs at all
Just what to check with the pros that ive got this right with the nodes, shots 4,5 and 6 (35.6, 35.9, 36.2) measured right on 1 inch of vertical shots 8,9,10 (36.8, 37.1, 37.4) measured just under half inch vertical.

Iam thinking nodes at 35.9 and 37.1 ??

On another note all my cases have black soot around the neck and shoulder. I read that this can be caused by low pressure however this cant be the case surely with mine as i still had soot at 38 grains of varget?? It is a tight neck turn chamber .286k neck. Is this causing any damage to my gun or is this just cosmetic?

Correct on nodes. Vary powder by tenths around them at greater distance to fine tune. Would be nice to find some positive compensation via next node up if you can reach it without pressure

 

[Richard Coody]

kind of wacky to me
6 & 8 look good and 7 is out there
10 & 12 look and 11 is out there

i think i would take that 10 load and do a seating depth test starting .005 off in .005 increments and see what i found.

 

[SheepDog]

Do a ladder with the 8 through 12 with .2 grain increments to recheck the group. Put a point of aim on your target. I know there must be one but I missed it when I looked.

 

[kyreloader]

I was at 37.7 of Varget with the 140s in my 6.5x47, I think you need to go higher and get above 38g for the 123s. I think you may have soot on the cases because you arent loading enough powder especially since you arent seeing pressure.

 

[Shynloco]

......
On another note all my cases have black soot around the neck and shoulder...

Ignore the soot. Take a piece of 0000 Steel wool and clean the soot off and you are good to go. It's caused by a very minor blowback because you are not getting a complete seal of the neck and face of the casing in the chamber when firing. Has little to no effect on accuracy, not to mention you are using probably the dirties powder available on the market. I see it too when my brass is turned a tad too much for the chamber the cartridge is being shot in.

Alex

P.S. Turning the brass now will only make the sooting worse.

 

[Pigdog]

Thanks mate for the advice on the sooty necks.