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#6792345 - 06/13/17 04:23 PM 6.5 Creedmoor modifications ?
redmist1 Offline
Woodsman

Registered: 02/28/17
Posts: 184
do you think a 6.5 Creedmoor with a 40 degrees shoulder would stop the brass from flowing so much when using Hornady brass.I have a couple other cartridges with 40 degrees shoulders and I have to do very minimal brass trimming.

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#6792357 - 06/13/17 04:30 PM Re: 6.5 Creedmoor modifications ? [Re: redmist1]
SapperTitan Offline
Taking Requests

Registered: 11/17/10
Posts: 24824
Loc: Killeen/Ft Hood, TX
Prob get more discussion in the ammunition section.
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#6792570 - 06/13/17 08:47 PM Re: 6.5 Creedmoor modifications ? [Re: redmist1]
dee Offline
THF Trophy Hunter

Registered: 04/10/10
Posts: 5298
Loc: Red River way
A ackley would stop almost all flow but is fire forming, gunsmith fee's (reamer, setback) and custom dies worth it?
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#6792657 - 06/13/17 10:02 PM Re: 6.5 Creedmoor modifications ? [Re: redmist1]
kmon1 Offline
junior

Registered: 09/27/06
Posts: 22872
Loc: Texas
What dies are you using, bushing or Lee Collet dies will stretch cases less than the standard dies. With the standard dies a good bit of the brass flow occurs during sizing the case as the expander ball is pulled back through expanding the neck.


like Dee said though the AI version would pretty much stop the case stretch or at least slow it down a lot.
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#6792659 - 06/13/17 10:02 PM Re: 6.5 Creedmoor modifications ? [Re: dee]
FiremanJG Offline
THF Celebrity

Registered: 12/16/08
Posts: 24491
Loc: Wolfe City, TX
Originally Posted By: dee
A ackley would stop almost all flow but is fire forming, gunsmith fee's (reamer, setback) and custom dies worth it?


Agreed.

Would that be a custom made reamer? Can't say as I've seen that one.
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#6792665 - 06/13/17 10:03 PM Re: 6.5 Creedmoor modifications ? [Re: redmist1]
ChadTRG42 Offline
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Registered: 09/16/09
Posts: 12676
Loc: Lewisville, TX
I've never had the appeal to AI anything. Too much work, firing forming, for way too little gain in performance.
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#6792686 - 06/13/17 10:18 PM Re: 6.5 Creedmoor modifications ? [Re: FiremanJG]
dee Offline
THF Trophy Hunter

Registered: 04/10/10
Posts: 5298
Loc: Red River way
Originally Posted By: FiremanJG
Originally Posted By: dee
A ackley would stop almost all flow but is fire forming, gunsmith fee's (reamer, setback) and custom dies worth it?


Agreed.

Would that be a custom made reamer? Can't say as I've seen that one.


I would assume so but I bet one could run a 22-250 Ackley reamer in a touch further and be close.
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#6793342 - 06/14/17 01:39 PM Re: 6.5 Creedmoor modifications ? [Re: ChadTRG42]
redmist1 Offline
Woodsman

Registered: 02/28/17
Posts: 184
Originally Posted By: ChadTRG42
I've never had the appeal to AI anything. Too much work, firing forming, for way too little gain in performance.



on a 223 AI I get a 200 foot per second bump in speed , 10 firings on a piece of brass without having to trim and my fire forming loads shoot sub Moa.That is worth it to me.

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#6793354 - 06/14/17 01:48 PM Re: 6.5 Creedmoor modifications ? [Re: redmist1]
redmist1 Offline
Woodsman

Registered: 02/28/17
Posts: 184
the brass flows so much on the Creed after a firing it's ridiculous and my chamber is a match chamber as for changing the shoulder angle I only wanted to go to 40 degrees I did not want to make it a full AI conversion.I am not trying to reinvent the Creed she is perfect as she is I would just like to slow down the damn brass flow ,you should not have to trim every firing.How is the brass doing from Lapua how often are you guys having to trim it .

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#6793448 - 06/14/17 03:28 PM Re: 6.5 Creedmoor modifications ? [Re: redmist1]
FiremanJG Offline
THF Celebrity

Registered: 12/16/08
Posts: 24491
Loc: Wolfe City, TX
I've got a match chamber, and trim every other firing.

My answer to any brass flow (6.5 Creedmoor being the least flowing case) has been a Giraud trimmer. 50 pieces of brass in 5 minutes.
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#6793450 - 06/14/17 03:32 PM Re: 6.5 Creedmoor modifications ? [Re: redmist1]
ChadTRG42 Offline
THF Celebrity

Registered: 09/16/09
Posts: 12676
Loc: Lewisville, TX
That's why Doug made the Giraud brass trimmer. You should get at least 2 firings without having to trim.
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#6794047 - 06/15/17 08:45 AM Re: 6.5 Creedmoor modifications ? [Re: redmist1]
TackDriver Offline
Tracker

Registered: 05/02/14
Posts: 840
Brass flow normally decreases after 2 firings, mostly on third firing I stop trimming.

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#6794071 - 06/15/17 09:05 AM Re: 6.5 Creedmoor modifications ? [Re: redmist1]
DStroud Offline
Pro Tracker

Registered: 11/02/11
Posts: 1734
Loc: Waco
Also if cases are flowing/growing same you can go over max length within reason without causing any safety issues.
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#6798848 - 06/20/17 02:03 PM Re: 6.5 Creedmoor modifications ? [Re: redmist1]
sbushee Offline
Pro Tracker

Registered: 07/08/15
Posts: 1936
I have a 220 swift. Puts 223 to shame speed wise

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