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Old 05-13-2019, 08:13 AM   #1
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So, I drilled this during load workup yesterday with a new chamber from Robert and team. Unfortunately it was slow and huge SD. I have not measured it because these targets are tough to be accurate with. I would guess .2 or .1 moa.

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Old 05-13-2019, 08:21 AM   #2
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I don't know how you could live with that.
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Old 05-13-2019, 08:23 AM   #3
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I don't know how you could live with that.
Looks great @ 100 but out at 1K or more that large ES will cause issues!
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Old 05-13-2019, 08:43 AM   #4
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Looks like you missed, to me!
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Old 05-13-2019, 08:48 AM   #5
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Looks like you missed, to me!
Hah! Very True. The funny thing is this rifle was zeroed without a muzzle brake for a 1K NRA competition (They do not allow muzzle brakes). I put the muzzle brake on the rifle and this was the zero shift. This is a 28" M24 Countor barrel that you would think would not shift this much, color me surprised!
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Old 05-13-2019, 08:53 AM   #6
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This brake and the magneto speed caused about two inches of shift.

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Old 05-13-2019, 09:47 AM   #7
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Nice shooting! If the speed was where you wanted it to be, Iíd say it was time to start playing with neck tension to bring the SD in line. But it sounds like itís back to the drawing board.....
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Old 05-13-2019, 09:51 AM   #8
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Quote:
Originally Posted by -HIC- View Post
Looks great @ 100 but out at 1K or more that large ES will cause issues!
ding!

nice group tho
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Old 05-13-2019, 09:56 AM   #9
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Nice shooting! If the speed was where you wanted it to be, Iíd say it was time to start playing with neck tension to bring the SD in line. But it sounds like itís back to the drawing board.....
The tension is a problem. I could feel the difference when seating these sets on my arbor press. My annealer is not here yet and I hope that fixes my issue. I also have a few more mandrels on order to play around with and will try some 4831SC. I think I will have the load nailed down in a week or two, fingers crossed! I am not messing with it anymore until my annealer gets here, this hornady brass is just not great..
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Old 05-13-2019, 12:21 PM   #10
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Quote:
Originally Posted by -HIC- View Post
The tension is a problem. I could feel the difference when seating these sets on my arbor press. My annealer is not here yet and I hope that fixes my issue. I also have a few more mandrels on order to play around with and will try some 4831SC. I think I will have the load nailed down in a week or two, fingers crossed! I am not messing with it anymore until my annealer gets here, this hornady brass is just not great..

Seeing the same on our end. Praying that ADG will release some PRC brass SOON.
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Old 05-13-2019, 05:56 PM   #11
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Just messing around with the target, calipers and range buddy looks like this group is from .06 - .1 I wish I had not used these splat targets but I did not have much in the truck!
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Old 05-13-2019, 06:34 PM   #12
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Not bad for a 1 shot group.
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Old 05-13-2019, 06:36 PM   #13
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Not bad for a 1 shot group.
Wow detective, you are on to me!
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Old 05-13-2019, 06:38 PM   #14
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Wow detective, you are on to me!
I'm funnin ya bud, I have one of there rifles and its a tack driver also. Enjoy the laser beam
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Old 05-13-2019, 06:50 PM   #15
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Originally Posted by one66stang View Post
I'm funnin ya bud, I have one of there rifles and its a tack driver also. Enjoy the laser beam
I should have put the smiley instead of the rolleyes! Thanks man!
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Old 05-13-2019, 06:52 PM   #16
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Wanted to share some of this load development.

55g H1000

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Old 05-13-2019, 06:52 PM   #17
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55.5g H1000

This group is .36 moa

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Old 05-13-2019, 06:53 PM   #18
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56g H1000

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Old 05-13-2019, 06:55 PM   #19
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I will update this thread as the load work continues. Like I said the last one is tough to measure. Bullet diameter is .264.

All 9 shots in this powder ladder combined measure .556 moa. The problem is the lowest SD was 19 if I remember correctly. I will update those stats when I grab the notebook from my truck.

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Old 05-13-2019, 08:45 PM   #20
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Nice work. What is the caliber / cartridge?
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Old 05-13-2019, 09:15 PM   #21
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Guessing 6.5 prc using H1000 powder, .264 bullet and prc brass mentioned?


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Nice work. What is the caliber / cartridge?
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Old 05-13-2019, 09:27 PM   #22
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Getting dialed in nicely! They built a rifle for me that shot 15rds under 1" fireforming factory brass. Impressive stuff coming out their doors!
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Old 05-13-2019, 09:44 PM   #23
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Quote:
Originally Posted by Brute Killer View Post
Nice work. What is the caliber / cartridge?
6.5PRC

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Old 05-15-2019, 07:37 PM   #24
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Is it new or fireformed brass? You can also use 210m primers as well as neck tension to bring the SD down. RL 26 will get you more speed but the H1000 is easier on the throat. I don’t have a PRC but have loads worked up in my 6.5 SAUM that are consistently under 5 SD with H1000 thrown through autotrickler, Hornady brass, 140 Hybrids, and 215m’s.
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Old 05-15-2019, 07:59 PM   #25
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Ive been stubborn trying to get H1000 or Retumbo to work because I like the temp stability they bring to the table. Talked to a customer that was fighting this same fight and ended up going with 4831SC. He said everything came together easy for him after the switch. The burn rate seems a little too fast to me, so I didn't consider it initially. That said, I think he's still running up around 3,100 and getting tiny SD numbers. Might be worth a try.
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Old 05-15-2019, 08:39 PM   #26
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Quote:
Originally Posted by Stick1 View Post
Ive been stubborn trying to get H1000 or Retumbo to work because I like the temp stability they bring to the table. Talked to a customer that was fighting this same fight and ended up going with 4831SC. He said everything came together easy for him after the switch. The burn rate seems a little too fast to me, so I didn't consider it initially. That said, I think he's still running up around 3,100 and getting tiny SD numbers. Might be worth a try.
This is my plan, I actually ordered some Monday with a few diff primers to try. I have RL26 at the house and my annealeez is waiting for me. I am traveling for work, getting home Friday. I will be up late Friday getting some lots loaded to try out sat!

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Old 05-15-2019, 08:46 PM   #27
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Quote:
Originally Posted by JakeGraves View Post
Is it new or fireformed brass? You can also use 210m primers as well as neck tension to bring the SD down. RL 26 will get you more speed but the H1000 is easier on the throat. I donít have a PRC but have loads worked up in my 6.5 SAUM that are consistently under 5 SD with H1000 thrown through autotrickler, Hornady brass, 140 Hybrids, and 215mís.
Fire formed. I know the neck tension was not consistent hoping to fix that by annealing. I am shooting for .002.

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