30 nosler ladder

Alex Wheeler

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Joined
Jul 5, 2017
Messages
1,669
Location
Montana
Wheeler Accuracy 30 Nosler
25" 10 twist rock creek #5
Kelbly Atlas single shot
Mcmillan game warden
Bix tac sport trigger
lil beast brake

Load for the ladder, cci 250, H1000, Berger 215 .010" off, new Nosler cases. All components right out of the box. 12 rounds on the rifle before today.

Ladder shot at 600 yards, prone from a bipod, there was about 1.5 moa worth of wind today. After shot 1 I knew I was too high so I pulled 1.5 moa out of the scope and replotted shot 1 on the target. Ladder was shot with 8.5 moa on the scope from a 100yd zero.

83.5- 2992
83.9- 3001
84.3- 3018
84.7- 3058
85.1- 3091
85.5- 3102
85.9- 3107
86.3- 3125

There is 2 obvious nodes, about 3000 fps and 3100 fps. The 3100 fps is warm, I got extractor marks here but this tg ejector is large and exaggerates this a bit. I am comfortable running this node. This is a great ladder to learn how to tune from ladders for positive compensation. It also shows why the "only look at vertical" mentality is wrong. You can draw a line from 2-8. At each node the group shows horizontal. This is telling you something. The nodes are obvious but seating depth is wrong. The next step will be to load 85.5 and work on the seating depth to form round groups.

30 nosler.jpg
30 nos ladder.jpg
 
It will be interesting to see how the 30 and 33 nosler work out, the 28 seems to be getting a following pushing the 180 and 195's.
Looks like your top node is basically a full grain wide, which is something nice to work with.
 
Nice Alex. I will be curious to see how the depth seating comes out and is evaluated. What is the capacity on that case.......Rich
 
I measured new cases at 93 grains of water to the top of the neck if I remember right. That rifle is a little heavy at around 12lb with the NXS. The adjustable cheek ads a full pound. I have a light 8.5lb 28 Nosler that shoots just as well if I want to hike.
 
I thought it had to hold a lot more than 88 grains!! You must have a heck of a long throat too to run that charge? I base that on my S.I. holding 96.4 H20.....Rich
 
The new 30 Nosler case I measured took 98grs of H2O to the top. A fired 26 Nosler necked up to 30 took 102grs.
 
I just checked a fire formed case, 98.4 gn h20. The 26/28 case has the shoulder .051" foreward and holds more powder. I have a 30-28 Nolser reamer as well and had a guy running 230s over 3100 with rl33.
 
ok, that is making a LOT more sense to me! I run 80 grs. of H1000 behind a 215 at around 3070 with my 96.4 capacity 30/375 S.I. I have reached mid 3100's with the 230's and RL33
 
So here is my question. Is it a guarantee that when you find a accuracy node like you did, that you will find a good group? I have experienced finding good velocity nodes like did, but could never get a good seating depth to bring the accuracy in. Very similar to what you found with 85.1-85.9.
 
The velocity node has to line up with the node you see on paper. The target tells the story, the chrony is extra data. I used to not even bring the chrony, but the labradar is so easy I do now. If you see a good clean ladder like I posted with good obvious nodes, it has worked 100% for me. What I see a lot is guys shooting skill may not be up to par, reloads may not be up to par, or conditions were not worth shooting it. You have to have solid data and if the ladder looks like a mess you wont learn from it. Also the rifle has to be solid. If you cant trust the holes you cant use a ladder. A 1 moa rifle for example would be very hard to get really solid ladder data from.
 
Was able to test 85.5 and .010 off
at 1k. Still wide but it shot 1 inch of vertical duplicating what it did at 600. A few thousandths of seating depth work and I'm done. The two down low and one even higher that's not in the pic are .015 in the lands, it did not like that.
20170811_081212.jpg
 
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