Federal 210 primers denting ?

[tim227]

First off let me say hello and thanks for all the info I've gathered just by searching. My primer press is denting my primers. I could not find any info on this so I would appreciate a little help.

I've noticed the primers are being dented when pressed into the cartridge. When I say dented it's almost a press mark. I don't think I'm using too much force. There will even be a mark if the primer is not all the way seated. I'm using what came with a Lee anniversary kit and not a hand loader. Is this normal?

My load I'm currently working a 7mm Rem Mag is;

Neck size and factory crimp
Primer Fed 210
Hornady 162 gr SST
62.5 gr H4831

I've shot 1.5 MOA @ 100 yds with this load .030 off the lands. My next step is to go a few thousands from the lands and out for hopefully better MOA.

Thanks in advance,
Tim

 

[DKA]

I always use a hand primer or Lee Auto Prime, can feel the primer when it seats properly with either.

 

[Chas1]

I know you said you get this mark even when the primer isn't all the way seated. Just to be on the safe side have you taken a measurement on how far below the base of the cartridge the top of the primer is? You might be surprised...just a thought. I use the Sinclair SS priming tool and seat by feel.

 

[Willys46]

I get the same thing on my 210's sometimes.. It has not effected accuracy at all. Sometimes they seat a little tough, I have seen it get worse when is used the ultrasonic cleaning method. Just seemed to make it to clean and no lube to help them seat.

By no means, do i suggest lubing them, but the ones tumbled with case polish seat much eaiser and no mark.

Also, dumb question, are you using the right seating plunger?

Willys

 

[tim227]

Also, dumb question, are you using the right seating plunger?

Willys

Thanks for asking. The small rifle primer won't preset the primer so I have use the large plunger.

A few left over rounds of fed premium actually have the same dent or press mark so i'm starting to think this is normal and I'm being parnoid.

Thanks again
Tim