You need to go to the benchrest forum or accurate shooter (6BR) and read about all the cratered primers. You are wrong it happens a lot with Savage and other guns as well. You also need to read about all the threads with primers not going off. They are always the Russian or CCI primers. You never read about Federals not going off. I have seen the fused powder where CCi primers have partially burnt the powder. We have 150 shooters every match shooting 17 to 20 shots and 10 matches a year plus shootoffs. I get to see a lot of cases being fired and see what primers always cause it . That s 30,000 shots a year plus shootoffs and World Open. In 14 years I have only ever seen one Federal primer not fire. You need to read up on secondary ignition or pressure spike. I seat my primers with a K&M and use .002 crush and my Bat actions will not set off CCI primers reliably. I have seen it with many guns. There is a thread on 6BR right now talking about primers not going off and having hangfires and is under Reloading Forum. The thread is about a 300 Ultra and Tula primers. Matt
I shoot a few thousand rounds a year myself in many different long range comps.
I own a Pressure Trace II system, there is nothing about pressure I don't know, whether it's S.S.E. or other so called pressure excursions.
I haven't used CCI primers for 20 years, they weren't the best back then, especially their benchrest primers. I use either Winchester or Federal primers, both standard and magnum in small and large rifle.
The plug of unburned powder is more than likely the cause of a faulty primer than the fact it was compressed. The internet has so many untested theories that anybody can have a theory that sounds reasonable and everyone believes it.
By the way, S.S.E. (Secondary Explosion Effect) has NEVER been duplicated in a lab, NEVER, so it is still just a theory. I have duplicated hang fires while using my pressure trace, no pressure spikes to be seen, none. Hang fires occur because the primer flash runs over a low density load of slow burning powder, very few granules are ignited initially, then after a short time the powder burns normally, this may be due to using a standard primer when a magnum primer should have been used in a large capacity case.
There is also another phenomenon that has been seen on the pressure trace, not by me, that some extremely overbore cartridges show a second very high pressure spike just as the bullet LEAVES the barrel. Instead of dropping to zero pressure, the pressure jumps to 80, 000psi at the chamber, why? No body knows.
Cheers.
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