Primer sensitivity

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I corresponded with Lee Precision WRT the change in primer brands and quantities in their instructions for their original Auto Prime and Auto Prime II tools. The response I received was primer manufacturers sometimes change the type of explosive mix in their products, and such changes were the basis for the primer brands and quantities changing for some varieties (such as Winchester and Remington) but not changing for others (such as CCI and Federal).

Here's a photo I just took of two packages of CCI #200 Large Rifle Primers I have. Both packages use plastic trays. The older package has primers on their sides separated into rows with the non-flat edges touching. The newer package has primers loaded on their flat sides, each in its own pocket, with no metal to metal surface contact. The newer package takes up more space than the older package, plus even as a new reloader I can understand it's far easier to keep primers from rolling on their sides when placed from package to primer tray whether that primer tray is a stand alone tray or a tray used with some other type of priming tool, such as the Lee Auto Prime as one example.

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I'm guessing when you spoke with a CCI employee the topic of potential effects of static electricity never entered the discussion?

Here's a couple of photos I just took of two packages of Remington 1.5 Small Pistol primers I have. The older package is just as you described with primers in rows on their sides with flat faces separated by cardboard. The newer package is similar in one way as the primers are also still on their sides but in individual pockets so the metal surfaces aren't in contact with each other.

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Another difference is the older package holds up to 250 primers each and the newer package holds up to 100 primers. Bpth of those packages have been available in "bricks" of 1000 primers. Note the brick of 1000 primers in the older cardboard package is considerably larger than the newer brick but both hold the same total number of primers the same size, Remington 1.5 Small Pistol.

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Can only go on my experience and conversation direct with CCI.... which started off w/.22lr questions.

I can see you say you can only go by your one conversation with one representative of a company hat manufactures primers who may have never worked in the actual primer manufacturing area and may not have been a hand loader. It's possible or you to examine additional information as I've clearly demonstrated, but you would have to personally choose to accept input other than the single conversation you once had. You have enough internet savvy o post and read here, and could examine things by following even the single link already existing on this board since March 2015, so 5.5 years prior to your posts in this thread, but adamantly say you can't even look at such pictures much less read or digest the text. Well that's certainly your perogative to choose not to even look at anything beyond that one conversation that disagrees with your disagreements.

I guess I'll waste a bit more of my time, knowing you aren't able to choose to even look at the material there, by adding this link on primer chemistry and effects of sensitivity between two different forms of lead styphenate, one designated "basic" the other designated normall".


https://www.bevfitchett.us/chemical-analysis-of-firearms/priming-compositions.html
 
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Or this article written by this individual who was a long time Speer / CCI employee, and was the editor of the Speer Reloading Manual for multiple editions ending with #14 (#15 was by someone else). The contents of this article appear in the front section of that #14 edition, as well as all sorts of other useful to me information.

https://www.shootingtimes.com/editorial/ammunition_st_mamotaip_200909/100079

I'm fairly certain someone will be able to honestly read all this stuff and make an effort to digest it. Perhaps another new reloader, like myself. To me doing so is very, very much like cross checking published load data by looking at, reading, and digesting the load data put forward from more than one source and never taking what anyone posts on the internet they just plain know that disagrees with all other sources of information whether load data or anything else.
 
There's this individual who reported a significan primer sympathetic detonation event in 2009 (11 years ago) using Federal brand primers with a Dillon press priming system that used a primer tube. Said all the primers in the tube - at least 90 - all went off. Just like the reported test results Lee Precision conducted using the Lee Auto Prime and Auto Prime II with flat tray systems.

https://www.dillonprecision.com/primer-explosion_350_11_632.htm

And what this individual posted about his conversation with Dillon regarding Federal primers.

https://www.sigtalk.com/threads/primers-could-explode-in-dillon.372298/

And this incident reported in 2015

https://forums.brianenos.com/topic/225407-dillon-1050-second-primer-explosion-in-one-week/

Plus the advice experienced reloaders provided to a new reloader like myself about do's and don'ts.

https://forums.brianenos.com/topic/211119-common-cause-of-primer-tube-detonation/

And this thread here on THR

https://www.thehighroad.org/index.php?threads/federal-primer-packaging-why.871551/
 
The text on the rear of 100 count boxes of Federal primers contains a warning from Federal not to use Federal primers in devices that use primer tubes.

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We've seen there are certainly multiple events of sympathetic detonation events with Federal primers by some users with equipment that use primer tubes, it would be disingenuous to put forward there's no correlation between those events and the warning printed on 100 count boxes of Federal primers. There's no such warning printed on the 100 count boxes of any other brand of primers I purchased, regardless of vintage.

We saw in this thread posted on THR this summer the relationship between the size of those 100 count boxes of Federal primers and Department of Transportation (DOT) requirements due to the higher level of sensitivity Federal brand primers have to sympathetic detonation.

https://www.thehighroad.org/index.php?threads/federal-primer-packaging-why.871551/
 

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