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Looking for pressure signs


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#1 ctay

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Posted 31 May 2012 - 03:12 PM

9.6gr HS6, 115 MG JHP, CCI SRP, Starline 38SC brass. Would you consider any of these primers flat? What else should I look at in terms of pressure signs? (BTW the purple is from Dykem)
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#2 Sarge

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Posted 31 May 2012 - 03:19 PM

Those primers look fine. They are barely deformed if at all.

The first thing I look at are primers. You will know a flat one when you see it.Posted Image
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#3 ctay

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Posted 31 May 2012 - 03:27 PM

ok - thanks! This was up at 181 PF which seems pretty dang hot. Gun shoots softer up there though.. :wacko:

#4 Youngeyes

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Posted 31 May 2012 - 03:39 PM

These are what flat primers look like. Yours are fine.
http://i1104.photobu...er/IMG_1991.jpg
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#5 jdphotoguy

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Posted 31 May 2012 - 04:03 PM

Good timing on this as I'll soon be working up loads for 9MM Major and it's nice to see what I should be looking out for.

#6 Sarge

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Posted 31 May 2012 - 04:16 PM

These are what flat primers look like. Yours are fine.
http://i1104.photobu...er/IMG_1991.jpg

Yep! And I have picked up some 9mm that were so flat they looked like they were one solid unit.
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#7 Ronnie j

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Posted 31 May 2012 - 04:34 PM

They look pierced to me, I'd bet if they were pistol primers they'd be flat as hell . Looks like a few are flowing into the firing pin hole

#8 diehli

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Posted 31 May 2012 - 04:37 PM

They look pierced to me, I'd bet if they were pistol primers they'd be flat as hell . Looks like a few are flowing into the firing pin hole


What you think you're seeing is likely a result of the Dykem.
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#9 GrumpyOne

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Posted 31 May 2012 - 04:51 PM

They are fine. If they were pierced, the edges would be flat, and the surface would be cratered.
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#10 Ronnie j

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Posted 31 May 2012 - 05:06 PM

Yeah the dychem is throwing me off

#11 superdude

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Posted 31 May 2012 - 07:56 PM

some pressure signs can be seen near the bottom of the page at this link:

http://38super.net/Pages/Factory2.html
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#12 ctay

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Posted 31 May 2012 - 09:43 PM

Good link - thank you! Yeah, the Dykem does throw off the picture - sorry. On the plus it does make it easier to find my brass...

#13 felt

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Posted 01 June 2012 - 04:20 PM

While we are on the topic, how are you applying the dykem?

#14 Sarge

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Posted 01 June 2012 - 04:32 PM

Probably a marker. They make magic marker type pens as well as spray and regular ink type liquid.
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#15 ctay

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Posted 01 June 2012 - 09:16 PM

I put the rounds in a 223 box and spray the heads with dykem. The 223 box leaves just the head exposed so it doesn't get on the sides of the round. I bought the 223 box at Sportsmans warehouse for $2...

Edited by ctay, 01 June 2012 - 09:21 PM.


#16 Aircooled6racer

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Posted 01 June 2012 - 09:28 PM

Hello: Looks great to me. You could try a shorter firing pin since it has good strikes and no primer flow. Thanks, Eric




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