Stretched out the 28 Nosler

Huntnful

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Who did you have do your chamber/195 extended throat?
It’s was built by Mike Johnson at Hells Canyon Armory. He does awesome work.
This is exactly why people should not use other peoples " pet" loads.
Totally agree!!
The most impressive thing about this thread was that OP had virgin ADG brass. @Huntnful what is your coal if you're .07 from the lands? Was that max length for reliable feeding or was it a result of load development?
My COAL is 3.654”. I’m .07 from JAM, not the lands. I’m very close to the lands, but that’s not where I measure from. And that COAL is for the load. The rifle will feed much longer rounds. My 195’s are around 3.75” I believe.
On the other hand, as a word of caution, in my Browning max long range 28N using N570 in a Norma case and the same bullet seated to a coal of 3.395 I show pressure signs at 79 grains and at 81 grains I’m close to blowing out primers. So as great as the above results are (and they are and congrats) I don’t suggest to people less experienced with a standard factory rifle start their hand loads at 84 grains and trying to duplicate these results.
Me neither haha. That’s why I stated that it is custom built and throated. So there is much more case capacity than a factory round. Which I’m sure effect the combustion requiring me to need a little more powder 🤙🏼
 

DeadmansPoint

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It looks like our 28Ns are chambered similar. In the absence of 195s, I went with the 143 hammers and N570. 92gr with a 3.6 coal in Norma brass... far from the lands, but getting 3686fps. I get a decent ejector mark, but no funny business with the primers/pockets/bolt lift. Thanks for the notes.
 

Huntnful

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It looks like our 28Ns are chambered similar. In the absence of 195s, I went with the 143 hammers and N570. 92gr with a 3.6 coal in Norma brass... far from the lands, but getting 3686fps. I get a decent ejector mark, but no funny business with the primers/pockets/bolt lift. Thanks for the notes.
Oh nice!!! I also have a completed load worked up for the 169 HH's. COAL of 3.650 with 88gr. of N570 going 3300
 

LeddSlinger

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The most impressive thing about this thread was that OP had virgin ADG brass.
I am not afraid to use virgin brass on load testing at all anymore. Many times I have had loads shoot just as good on the first firing with quality brass as I have on sequential firings after that.

I fired the 2.73” group below with virtually no vertical using virgin ADG brass at 871 yards prone from an Atlas bipod and 4-24x Trijicon Tenmile scope. What you might find even more impressive than it being virgin brass alone is that the group was fired with virgin 300 PRC brass necked up to make rounds for my 338-375 Ruger. The other photo shows a virgin piece of 300 PRC necked up to 338 cal on the left, and next to it on the right is a Fireformed piece of 338-375R brass. You can see that the shoulder on my 338-375R blows quite a ways forward when Fireformed. I have more work to do with this load because it has not been ladder tested yet and the brass has only one firing on it, but it’s looking like a good place to start.

I have also had similar results in two 300 Norma Mag Improved rifles using Lapua brass, a 20 TAC Fireformed from 223 cases, and a 7mm Mag with virgin brass.


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Huntnful

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I am not afraid to use virgin brass on load testing at all anymore. Many times I have had loads shoot just as good on the first firing with quality brass as I have on sequential firings after that.

I fired the 2.73” group below with virtually no vertical using virgin ADG brass at 871 yards prone from an Atlas bipod and 4-24x Trijicon Tenmile scope. What you might find even more impressive than it being virgin brass alone is that the group was fired with virgin 300 PRC brass necked up to make rounds for my 338-375 Ruger. The other photo shows a virgin piece of 300 PRC necked up to 338 cal on the left, and next to it on the right is a Fireformed piece of 338-375R brass. You can see that the shoulder on my 338-375R blows quite a ways forward when Fireformed. I have more work to do with this load because it has not been ladder tested yet and the brass has only one firing on it, but it’s looking like a good place to start.

I have also had similar results in two 300 Norma Mag Improved rifles using Lapua brass, a 20 TAC Fireformed from 223 cases, and a 7mm Mag with virgin brass.


View attachment 278054
View attachment 278063
Impressive group! Especially given the circumstance! Consistency is king I've come to find out.
 

dogz

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I'm amazed he can see that little target at that range, I'm doing well to see it at 100 yds..............snork
 

Huntnful

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You show me fired Norma brass without an ejector mark.

Excessive>stout>significant>robust>pronounced>decent>little>none

I live dangerously.
haha same. I mostly focus on bolt lift and primer deformation, over ejector mark. But with the high quality brass, they normally all three come about the same time.
 

LeddSlinger

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Ejectors marks are signs of getting up there pressure no doubt so do not disregard that sign.

But a barrel doesn’t really break in until after a 100 rounds or so. Doesn’t matter the manufacturer of the barrel or how beautiful the finish lapping is in the bore. Keep her backed off from pressure signs until the barrel breaks in. After about the 100 round neighborhood, give or take, you should notice the bullet speed increase from 30-40 fps on the low side to even as high as 100 fps in some instances without any increase in powder charge weights. Just depends on the barrel as they are each unique. After that you can start finding where your max pressure is at. Until then it’s a waste of time trying to determine that limit in my opinion because you may have to re-tune your load anyhow
 

jeffreybehr

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Decided to work up a load for some Berger 180 VLD Targets in my 28 Nosler recently. The gun is throated for 195's, so the 180's sit with the boat tail slightly up in the neck of the case. I went just below pressure, and ended up at 3130fps. These things freaking SHOOT.

Yesterday I went out to 1120 yards to verify the BC of the bullet. My first two shots were a little high and left of the plate. I came down 1 MOA and held 2 MOA of wind and then printed this consecutive 3 shot group of 6". With only 3" of vertical separation. Pretty happy about it!! I shot the group off of a bipod and rear bag out of the bed of my truck.

The verified BC of the bullet is .375 G7 instead of the factory stated .350 G7

28 Nosler - Built by Hells Canyon Armory out of Idaho
Berger 180 VLD Target
ADG Brass (brand new)
215M
86gr. N570
3130 FPS

View attachment 277867
View attachment 277871

WOW and congrats.. I only wish I could do as well.
 

Wedgy

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Feb 9, 2013
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Vey nice !! Glad you finally found some N570
Remember that each barrels rifling may affect the bullets BC so it may vary from rifle to rifle.
Now for the whacky California part; it is illegal to shoot from a vehicle and you can get a ticket for even leaning a loaded gun up against the truck. They consider it a loaded gun in the vehicle even though it is not actually in the vehicle.
Now, what tags did you draw to go after with this beauty ?
 
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