All I can say is there have been dozens and dozens of threads talking about primers not going off or with hangfires. Most all have been CCI primers. I know lots of competitors that will not use them because of the not firing.**********
Thank you for your interest in my post - am committed to providing factual information - please allow me to comment
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It would appear the key word in my post was, "type", small words like this can be easily overlooked and might be a reason to create a separate post having a separate heading. Yes, primers of the same manufacturer commonly have different thicknesses. But in this particular thread we are concerned with the mighty high pressure .338 Lapua Magnum.
For Boyd & Matt, to direct this post to a more certain outcome I might ask what kind or type primer might be used in the .338 Lapua magnum. A CCI 300? no! wrong type because this is a pistol primer intended for pistols. The .338 Lapua uses large rifle primers, a different type of primer.
check this out
www.accurateshooter.com/technical-articles/primers-and-pressure-analysis/
I am not a primer expert and apparently my knowledge is open to a general critique on the particular subject being type of primer in this case large rifle then more particularly a CCI 250 primer. I see a common thickness of .027 for all primers of the same type being large rifle.
For Boyd & Matt, actual measurements of the same type of primer used in the .338 Lapua magnum might be offered as a response. In fact I did look and discovered that all large rifle primers, same type, were of the same cup thickness.
All I can say is read stuff real careful.
It just seems everything including seating depth, firing pin weight, strength of strike, headspace and maybe a few other issues are causes.
I have a 338 Lapua IMP and I use Federal 215. Never had a misfire. In fact almost every competitor and hunter I know uses Federal for hunting and competition. Matt