6mm PPC and 6mm PPC USA

A

abintx

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Is the 6mm PPC and the 6mm PPC USA the same cartridge just referred to by slightly different names ??? If not, can someone tell me what the differences are ??? Thanks, Art
 
Wildcat vs Factory

Sako company had the rights to standardize the cartridge for mass production and I suspect they added the USA behind the 6ppc so people would know it was the factory chamber vs the wildcat ppc which to my knowledge doesn't have a SAMMI spec. In other words there are a lot of ppc reamers out there that vary from one another although they are all known as ppcs. Randy J.
 
JD Mock is correct the PPC USA is larger in the web area thats the biggest difference. There are lots of different neck diameters out there but the base of the case is where the PPC USA is different. I can tell you from personal experience trying to stuff cases fired in a PPC USA chamber into a standard PPC chamber can create real grief.
 
Factory chamber

Dick--I suspect Sako did that by design as they controlled the ammo as well as the guns being chambered. I am sure they did not want someone chambering their factory ammo into a custom PPC. It would become one heck of a crimped neck. If you use a turned case into the USA chamber, you have a lot of radial clearance but it will shoot safely. You reverse that--put a factory loaded unturned USA cartridge in a custom PPC and it is a recipe for disaster. Remember that most people were using .262 necks in their ppc at that time. In terms of just the brass case you are absolutely correct. Randy J.
 
6mm and 6mm ppc usa

There's a lot of difference.
The web is way thicker. The original cases were balloon head and had a tendency to crack after a while. Sako made cases for doc and Ferris
They had a hard time getting sako to make the brass. After a lot of grief doc and ferris gave up for a while. Sako was demanding larger and larger orders and the supply route was a botch to say the least.
At one time they were being scalped for $3 each.
Sako finally made a move to us standards . To comply the case changed quite a bit. The Sako USA case holds about 1.5 to 2grs less powder then the original and the new 220 cases from lapua.
 
Gentlemen ...

Thanks for taking time to respond to my inquiry. Your explanations were very helpful. Art
 
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