For 6mm Creedmoor brass with the small rifle primer, which manufacturer/type primer are people using?
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The thinner cups on primers like the CCI 400 will get pierced with moderate pressure loads, essentially giving false indications of being over pressure.Why is it necessary to have a harder primer cup?
Does that imply that cartridges that use a small rifle primer don't operate at as high of pressures?The thinner cups on primers like the CCI 400 will get pierced with moderate pressure loads, essentially giving false indications of being over pressure.
It’s not “harder”, just dimensional differences.Does that imply that cartridges that use a small rifle primer don't operate at as high of pressures?
Federal 205m worth it? I always shot large primers and just got some srp and got a bunch of the 205m’s to use
It’s not “harder”, just dimensional differences.
The 450 is still a small primer, it is a thicker cup material though so it is more able to resist deformation under equivalent pressure.
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CCI cups are definitely harder. Take a rifle that has a little more clearance around the pin and run remington 7.5's and CCI 450's or BR4's. The Remington 7.5's will get a little primer flow around the pin, never had it with CCI's. Not that it's a problem as long as it's not excessive, but to me it shows that CCI's use a harder material.
Thanks for your first-hand experience. I sure appreciate it. -- ToddI have shot over 2000 6 Creedmoor this year for PRS. All I use is federal 205M's, as are many others I know. Great primers and SD is always 3-5. They can be hard to find, just like the Fed210Ms, but are great primers.
I've never seen this...Thanks for posting. Just curious, the LR primers all seem to be .027", is that right below where the image is cut off?It’s not “harder”, just dimensional differences.
The 450 is still a small primer, it is a thicker cup material though so it is more able to resist deformation under equivalent pressure.
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