Concave Primers

[Kevin Gullette]

.....some pictures? Anyone have some?

That might help.

Kevin

[MikeMoore]

I could take 'em Kevin but I've not a clue on how to post them or email them.

[Kevin Gullette]

Basically, you plug your digital camera into your computer, and then create a jpeg file for a pic(be sure to size the pic correctly). I use the Photosuite program. Then go to tinypic dot com, and enter the jpeg pic file. Then copy & paste the tinypic file to your message post on this forum.

It's a bit of a pain to get started.....but pretty easy thereafter.

Clear as mud.....huh??!!

Kevin

[Dean2]

Someone already posted the answer. Only cause of dished primers is heavy pin strike on a relatively thinner or softer primer face.

There is no way for pressure to get behind the case head and cause it to dent the primer to a concave shape and absolutely no chance there is a vacuum being created which is sucking the primer face forward through the little flash hole. Since those are the only two ways for pressure to create the effect then the firing pin pushing the primer inward is the only set of forces we are left with.

You could try lightening your firing spring pressure, using thicker or harder cup primers or like me, not worry about it and just keep shooting what is giving you great groups and SDs. A concave primer has no down side. Hope this helps settle your mind.