Are your primers "loaded"?

[wyliefoxEsquire]

 

During one of our deep discussions OL' #4 brought up the topic of "loaded" primers.

Effectively some (many?) lite hits are due to the primer not properly seated.

 

After a short search I found the following  

 

credit MagnumManic on accurateshooter.com

 

Many people do not realise that primer/anvil relationship has a huge bearing on a primers function.
The primer anvil is proud when manufactured so that they are not 'loaded' against the priming pellet, this is a safety issue for transportation.
The primer cup, anvil and priming pellet all need to be 'loaded' the same once seated in a case, the cup needs to be against the bottom edges of the pocket, the anvil needs to be flush with the cup and the pellet needs to be slightly compressed by the anvil, but not crushed or deformed. All of this creates uniform primer ignition, if any of these parameters are not the same between primed cases, then ignition of the primer will not be uniform and start pressures will differ enough to give large swings in velocity and performance.
2 things effect primers badly, high seated primers and crushed primers seated too deeply, both of which give poor ignition.

 

 

[The Original Lumpy Gritz]

Why you always seat the primer to the bottom of the primer cup, on the shell case!

[Shooting Bull]

Don’t know about primers, but on a good night I sure am. 🥃😁

[The Original Lumpy Gritz]

1 hour ago, Shooting Bull said:

Don’t know about primers, but on a good night I sure am. 🥃😁

Go back to your room 

[Dapper Dave]

I've been seating primers firmly for 20+ years, never had an issue I can remember, all different makers. I have had primers that won't seat fully due to brass problems, but if they seat fully, they work fully. 

[Smokin Gator SASS #29736]

ICORE shooters using tuned S&W revolvers generally use Federal primers. Many try to seat them a little below flush mainly to be sure that they are fully seated. I never had a problem and haven't noticed others having issues seating them this way.

[Eyesa Horg]

I did catch an instruction way back when that said to seat them flush and my reaction to it was that seem like a lot of going around on my pistols. Maybe with stock springs they seat the rest of the way. I've always seated them firmly to the bottom of the pocket and they go bang!

[watab kid]

seriously , i went to seating primers with a hand primer to insure it was fully seated - had issues with the press system , 

 

less seriously , properly primed is a relative term depending on what your getting primed for , dont want to over prime and end up with that big bang out of battery