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Varmint loads for the Grendel
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d4570 View Drop Down
.416 Rigby
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Joined: 27 January 2004
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    Posted: 20 March 2024 at 13:01
With summer coming the GD will come along on some of our PD hunts. Her 7mmx57 is a longer range choice but it comes with a heaver rifle and more recoil then here 20" barrel mini Howa 6,5 Grendel. So we are working up some loads for the 6.5. We think a 90 gr is as small as we can get.
We are getting around 2800 fps with the IMR8208.
The first 3 loads looked like we needed to try something else.
But then at the top end of our load data this happened.

BAM it works.
We will do a little more work but I think she can work with it. 
Remember: Four boxes keep us free ,the soap box, the ballot box, the jury box, AND the cartridge box
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Wing master View Drop Down
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Points: 8029 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Wing master Quote  Post ReplyReply Direct Link To This Post Posted: 20 March 2024 at 18:49
Wow. That's an impressive group. That's definatly minute of prairie dog. 

It amazes me how a powder charge change can bring shots together.

It doesn't get much better than that but seating depth has always been my last place to fine tune a load.  
I have always considered myself to be quite the bullshitter, But ocasionally it is nice to sit back and listen to a true professional......So, Carry on.
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d4570 View Drop Down
.416 Rigby
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Points: 9961 		Post Options Post Options   Thanks (0) Thanks(0)   Quote d4570 Quote  Post ReplyReply Direct Link To This Post Posted: 21 March 2024 at 06:43
The boy may play with the length.
 
Remember: Four boxes keep us free ,the soap box, the ballot box, the jury box, AND the cartridge box
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Wing master View Drop Down
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AKA StraightShooter

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Points: 8029 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Wing master Quote  Post ReplyReply Direct Link To This Post Posted: 24 March 2024 at 19:59
Either way it looks like you have a winner.
I have always considered myself to be quite the bullshitter, But ocasionally it is nice to sit back and listen to a true professional......So, Carry on.
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d4570 View Drop Down
.416 Rigby
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Points: 9961 		Post Options Post Options   Thanks (0) Thanks(0)   Quote d4570 Quote  Post ReplyReply Direct Link To This Post Posted: 25 March 2024 at 06:51
I think so. She has around 100 7mmx57 brass to fire form I hope to have her do that first. They shoot just as good as her already fire formed AI shells.Clap
Remember: Four boxes keep us free ,the soap box, the ballot box, the jury box, AND the cartridge box
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AKA StraightShooter

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Points: 8029 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Wing master Quote  Post ReplyReply Direct Link To This Post Posted: 27 March 2024 at 08:35
That is really interesting. I've never had an AI anything. I've always assumed fire forming brass wouldn't be accurate at all. 
I have always considered myself to be quite the bullshitter, But ocasionally it is nice to sit back and listen to a true professional......So, Carry on.
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BEAR View Drop Down
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Points: 14390 		Post Options Post Options   Thanks (0) Thanks(0)   Quote BEAR Quote  Post ReplyReply Direct Link To This Post Posted: 27 March 2024 at 09:30
I've always found powder charges that just about fill the case to the neck are the most accurate.

Good shooting to GD.  90grs should make short work on PDs.  

I once lined up two PDs while hunting antelope with my 6.5, both heads flew off about 2 foot. SST
“ The IQ and the life expectancy of the average American recently passed each other in opposite directions.”
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d4570 View Drop Down
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Points: 9961 		Post Options Post Options   Thanks (0) Thanks(0)   Quote d4570 Quote  Post ReplyReply Direct Link To This Post Posted: 27 March 2024 at 11:33
Thumbs UpHugClap
Remember: Four boxes keep us free ,the soap box, the ballot box, the jury box, AND the cartridge box
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Points: 5574 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Irish Bird Dog Quote  Post ReplyReply Direct Link To This Post Posted: 02 April 2024 at 19:18
way to go g'pa.....maybe see U & her in a few weeks.
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