oneeyejohn
Well-Known Member
I just read a Berger bullet add and in referred to 6.5-06 A Square! What does the term A Square mean? I have a 6.5-06 but have never read the A Square term before.
Thanks in Advance
Thanks in Advance
6.5-06 A Square
- Thread starter oneeyejohn
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As of 2011, A-Square listed two different rifles factory chambered in 6.5-06 A-Square; the Hamilcar and the Genghis Khan.[3] Several of the major custom barrel manufacturers offer the 6.5-06 A-Square (sometimes listed simply as 6.5-06) chamber as an option for builders of custom rifles. However, On 15 February 2012, the A-Square Company ceased to exist.
The .30-06 Springfield is the parent case of the .25-06, 6.5mm-06 and the .270 Winchester, all of which are similar both ballistically and visually. Had the 6.5mm-06 been commercially adopted first, the other two would not have been necessary. In fact, the 6.5mm-06 remained a wildcat until 1997, when it was SAAMI standardized by A-Square.
6.5mm-06 brass and cartridges are available from A-Square. Brass can also be easily produced by necking-up the .25-06 Remington case to accept .264" (6.5mm) diameter bullets. The .25-06 uses .257" bullets, so one pass of a .25-06 case through a 6.5mm-06 resizing die should do the job. .25-06 brass is widely distributed, a convenience for 6.5mm-06 reloaders. An alternative to necking-up the .25-06 case is necking down the .270 Winchester case and trimming to length. .30-06 cases can also be used to form 6.5mm-06 brass.
Derived from A Square Company, LLC.
oneeyejohn
Well-Known Member
Thank You for explaining the origin of A Square. David Tucker
"A Square" just SAAMI standardized the cartridge 6.5 06 A Square it is still just the 6.5 06. Just like 6mm BR Norma, 6.5X284 Norma (6mm BR & 6.5 X 284). "NORMA" just standardized the cartridge with CIP. The CIP-tables contain all relevant informations on cartridges for pistols, revolvers and rifles that are standardized by CIP. This includes the exact measures of the cartridge case, the chamber, the profile of the barrel and the maximum pressure.
What does CIP stand for in testing?
The Commission Internationale Permanente pour l'Epreuve des Armes à Feu Portatives (Permanent International Commission for Firearms Testing - commonly abbreviated as C.I.P. or CIP) is an international organization whose members are 14 states, mainly European.
Hespco
Well-Known Member
Also the 6.5x06 has virtually the same ballistics as the 6.5 PRC , but with much less expensive & plentiful brass. You would love this well balanced cartridge.
Wild Monkey
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My Version of the .256 Newton
The Story of the 6.5-06 .. begins in 1912 with Charles Newton. https://gunsmagazine.com/guns/rifles/6-5-creedmoor-beware/
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Wild Monkey
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funny the article doesn't mention the RCBS 30* shoulder version which I had assumed many considered the standardized or modernized version at one time in history. There's probably an endless amount of variations of the Cartridge.
Here's the 26-06MX.
Here's the 26-06MX.
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Hugnot
Well-Known Member
Is "A-Square" ®?
I have had a number of 6.5-06's & regard the 6.5-06 as one of the very best calibers. Nice long shots of 1000 & more and flat trajectory needed for supine rodents having 2-3 inch high profiles using the 120 & 123 H ELDM's at 3100 plus.
As mentioned brass may be formed from a variety of .30-06 based cartridges.
In the event of travelling to a far-off land where ammo needs to have the same identification as that marked on the barrel of the rifle:
Somewhat pricy but shooting/hunting is not a cheap sport!
I have had a number of 6.5-06's & regard the 6.5-06 as one of the very best calibers. Nice long shots of 1000 & more and flat trajectory needed for supine rodents having 2-3 inch high profiles using the 120 & 123 H ELDM's at 3100 plus.
As mentioned brass may be formed from a variety of .30-06 based cartridges.
In the event of travelling to a far-off land where ammo needs to have the same identification as that marked on the barrel of the rifle:
Somewhat pricy but shooting/hunting is not a cheap sport!
Eric Alexander
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I could not agree more. had the 6.5-06 been commercially adopted, there would have been no need for the other two.
Hespco
Well-Known Member
It's all in a name. "PRC", a promotional name , was used to lure buyers to a new $$$ cartridge case & specialy needed $$$ action that produced the same existing ballistics of the 6.5x06, which could be built on any existing 30-06 based action. Tons of inexpensive used 30-06, 270, etc actions to build a 6.5x06 on. It just means a barrel swap.
"Those who fail to learn from the past are doomed to live it again" . Winston Churchill...
"Those who fail to learn from the past are doomed to live it again" . Winston Churchill...
buckbrush
Well-Known Member
Curious why you feel a special action is needed for the PRC. What's wrong with a traditional short action?
Hespco
Well-Known Member
This was a reference to when the PRC first came out. Those wanting one were paying $K for special custom rifle actions. There was at that time no off the shelf short action rifle action that would acomaodate the PRC case.. Custom was the only way. When compared to an identical ballistics cartridge like the 6.5-06 that could be built with a plethora of available , inexpensive 30-06 , 270, etc actions.
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antelopedundee
Well-Known Member
The reviews on Graf for this brass are not very good, but I can't say that my experience concurs.
One still has the same issue with a shortened case if you fire form brass to the 6.5-06AI; if that is a concern.
