Here is an good article that can lend insight to your primer knowledge.   

http://ingunowners.com/forums/ammunition-reloading/174704-choosing-right-primer.html

I have often mentioned the BRISANCE of a primer being needed with heavy charges of dense powder especially colder weather.

Then there has been talk about CUP THICKNESS, MATCH or BENCH REST PRIMERS, STORING YOUR PRIMERS, PRIMER CHART & REFERENCE GUIDE, etc

All in all a good read and review to reinforce your own experiences.  Enjoy!

Thanks


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Good read for any reloader

 Thanks for the info...

recently had a Sig 226 with some older S&B 9mm ( 20-30 yrs  old ) fail to fire 1-2 out of ten...  thought it was my main spring as I had 100% in an old Belgium Hi power.
Went and replace the spring and still same thing.

Turned out the primer cups on those older 9mm were hard, made for machine pistols. 

PS a glock failed to fire 5 out of 5 when tested later (  but all fired fine in the HPwr )

That is a fantastic read!