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Joined: Dec 2013
Posts: 5
New Member
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New Member
Joined: Dec 2013
Posts: 5 |
Hope you shoot with a welding mask on. There's absolutely no pressure signs and the load is actually less than what I'm using with my Custom Creedmoor. I'm not running much above the book. I'm not 100% certain that the Chrono was accurate but it was consistent to 30fps from high to low that day.
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Joined: Jul 2007
Posts: 24,643
Campfire Ranger
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Campfire Ranger
Joined: Jul 2007
Posts: 24,643 |
a Bergara 6.5 CM 21" pushing 140 Gr Amax 2955 fps.
![[Linked Image from i.imgur.com]](https://i.imgur.com/X0n16mr.png) WWP53D
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Joined: Nov 2015
Posts: 639
Campfire Regular
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Campfire Regular
Joined: Nov 2015
Posts: 639 |
My 22" Creed gives 2,760 fps with 140gr Accubonds and 143gr ELDxs over a less than max load of RL16. Since I'm planning on a Creedmoor, I've looked around for RL16/Creedmoor data and can't find that Alliant has any. How do you know what a "max" load of RL16 is in the Creedmoor? Found it... Sierra gives RL16 data for a 140 from the Creedmoor. 43.5 grs for 2,800 fps from a 24" barrel, so 2,750 certainly makes sense from a 22" barrel. https://sierrabullets.files.wordpress.com/2017/01/6-5-creedmoor-data-final-as.pdfJust saw your post. That Sierra data was one source and jives well with what Alliant sent me when I requested their 6.5CM data a year ago. I don't know why they still haven't published it. ![[Linked Image]](http://i64.tinypic.com/2r7awxf.png) Hopefully you can read that. It's such a pain to post up pics or send files on this site, I had to take a screen shot of the PDF and upload it. I use 42.5gr with my 140s and 43.5gr with 127gr LRX for 2,760 fps and 2,910 fps respectively, rifle is a Montana. I went above 2,800 fps with the 140s, but accuracy was best where I settled.
Last edited by Gtscotty; 10/26/17.
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Joined: Jan 2001
Posts: 2,679
Campfire Regular
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OP
Campfire Regular
Joined: Jan 2001
Posts: 2,679 |
Gentlemen, I APOLOGIZE for failing to check back on this thread... The barrel length was largely dictated by Jim Borden. He did the barreling and I did not want to come out completely against his advice. I spoke with him yesterday and he cut, crowned, and turned the 5/8-24 thread tenon at 21.5". Should have insisted on 20"... Scheduled to be here tomorrow. That said it looks like the stock is dicked, for the moment, so I'll have plenty of time to find some RL16... He strongly suggested custom Whidden Dies as well. Dunno on that either... A "unknown reamer" from AI and Creedmoor Sports. Ran $350ish at the time so I was told. I follow THAT not... .296" neck, .297" at the neck should interface, with .199 FB, 1°30... Would have preferred a .295" neck and .188" Freebore. That said I have 2.995" of magazine to try and find the lands... Brad, why are you building a Creedmoor? You know cartridges are really more alike than they are different don't you? It bothers me that YOU, of all people, have been taken in by all of this Tomfoolery...  Regards, Matt.
Last edited by Matt in Virginia; 11/01/17.
NRA Life Benefactor Member
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Joined: Sep 2008
Posts: 853
Campfire Regular
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Campfire Regular
Joined: Sep 2008
Posts: 853 |
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Joined: Oct 2000
Posts: 30,280
Campfire 'Bwana
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Campfire 'Bwana
Joined: Oct 2000
Posts: 30,280 |
Brad, why are you building a Creedmoor? You know cartridges are really more alike than they are different don't you? It bothers me that YOU, of all people, have been taken in by all of this Tomfoolery... Regards, Matt. I'm just at the age where I don't like recoil (56), and also can see a "sometime" in the future where I might not want to handload (gasp)... the Creedmoor is one of those that would be ideal for answering both those accurately, while being capable antelope to elk. Plus I had over 1,000 really good 6.5mm bullets given me recently. So I bought dies and 250 pieces of Creedmoor brass... might as well build one! Neither of my kids (son 24, daughter 27) handload. Were I buying them each a rifle tomorrow it would be chambered for the Creedmoor. They could hunt everything here in MT just fine with great factory ammo and little recoil. Might as well build a couple to leave to them... not that I plan on exiting in the next 40 years -grin.
“Perfection is Achieved Not When There Is Nothing More to Add, But When There Is Nothing Left to Take Away” Antoine de Saint-Exupery
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