Primer should be flush . . . right?

preferably a clean pocket.
Click to expand...

Always read that- and believed it.

Until I saw the results of testing with an RSI Pressure Trace on clean vs. "dirty" primer pockets.

"Dirty" primer pockets had better, and more consistent pressure curves. I'll keep my pockets dirty, thank you :D
 
Dirty primer pockets not allowing the primer to be seated has nothing to do with accuracy in my experience. However, it has every thing to do with getting the primer seated deep enough to reliably be fired. I've experienced it first hand. God Bless
 
I pretty much have to clean the primer pockets with Winchester 45 Colt brass to get the primer to seat deep enough. With other brands it's less crucial, but still a good practice. As far as the claim made about uncleaned pockets being more consistent for ignition goes, well, fine, but I'm not ready to buy that one.
 
^^
I wish I had somehow copied it offline, guy did a "reasonably" scientific (IMO, anyway) test and posted it all up on Sniper's Hide a couple of years ago. It's all gone since they changed format.
 
should be slightly below flush.i would tend to doubt that a few rounds even flush would ignite when you close the bolt face.you have to be a bit above flush generaly for that to happen.but double check with an expert
 
Right


and the idiots who force it closed are the ones who set the round off.

i prime by feel,if it looks flush but when you touch the bottom of the shell you cant feel the primer.then you know its slightly below flush.i dont know if the eye cant detect slighty bellow flush.if the eye see's below flush you may get a misfire
 
Follow up on "flush primer" question.

Well I got the Horndy reamer package. It included a handle and reamer for both small and large primer pockets. I put the small one in the chuck of a cordless drill, clamped the drill to my reloading bench, and put a second clamp on the drill trigger. Did a couple hundred 223 in a very short time. Primed them and only had one offer any serious resistance. Good deal.
Live well, be safe
Prof Young
 
Properly made primer pockets with properly dimentioned SAAMI spec primers will seat .005" BELOW flush with the case head.
And so it goes...
 
For many years I would have many issues seating primers. Finally I purchased a Redding primer pocket uniformer with the handle. I found that it will cut the bottom of the pockets to the corners... I haven't had a single primer seating problem since I have been using the uniformer. The friction is consistent and the depth is also consistent. You will be surprised how much material gets removed when unfirming. The reamer may be the same thing.
 
Do you have to remove crimp because I was reloading 308 and didn't know some of the primers were crimped I felt a very little resistance with my hand primer but it seated just like it was a none crimped pocket.
 
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