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Dam near hurt my self


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#1 Chris Eden

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Posted 25 February 2017 - 08:02 PM

Was shooting 600 yards with my DPMS SR-25, did my load work up and initial shooting with one batch of powder I've had for a while and started on a new batch. I thought I could just carry on shooting blew my Pmag to bits and brass catcher a couple feet away.
After finding some brass there was major over pressure signs

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#2 Matt Rigsby

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Posted 25 February 2017 - 08:15 PM

Scary stuff. Glad you're OK.

IDGAF CASH ME OUSSIDE HOW BOW DAT!


#3 Flatland Shooter

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Posted 25 February 2017 - 09:51 PM

All that from just a different lot of powder?

 

I guess I've been lucky.  Changes from one lot to another have been minor.

 

Bill



#4 dennishoddy

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Posted 26 February 2017 - 10:06 AM

Wow, what a kaboom!
Glad you didn't get hurt!

#5 mattmiller (Robusto)

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Posted 26 February 2017 - 10:12 AM

Chris could it be a bad case or a double charge?
Glad you are OK.

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#6 Chris Eden

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Posted 27 February 2017 - 12:19 AM

Matt could be head space, I don't really know can't be a double charge as it's almost compressed loading, max listed load was compressed so I would have noticed in the press


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#7 Matt Rigsby

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Posted 27 February 2017 - 08:34 AM

If you're compressing the powder, it's probably ably too much.

What's your recipe?

IDGAF CASH ME OUSSIDE HOW BOW DAT!


#8 Mitch Gibson

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Posted 27 February 2017 - 08:53 AM

Compressed powder charges aren't unusual.
#dicksoutforHarambe

#9 Matt Rigsby

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Posted 27 February 2017 - 11:38 AM

Compressed powder charges aren't unusual.


It scares me. If I had a powder that compressed from standard load data, I'd change powder.

IDGAF CASH ME OUSSIDE HOW BOW DAT!


#10 benny hill

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Posted 27 February 2017 - 12:55 PM

it was not from one lot to the next, being changing lots for 35 yrs w/no trouble unless you are above book max. what load was it?


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#11 Chris Eden

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Posted 27 February 2017 - 01:25 PM

Only 44.3 grains of AR2208 (ADI). Max listed load is 45 and this didn't have major pressure signs.
Compressed loads aren't a big deal in 308 as long as there aren't cam marks on the cases and primers still have a curve on the edges things will be pretty safe normally.



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#12 Definitely Deplorable

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Posted 28 February 2017 - 11:11 AM

What primers you running?



#13 mattmiller (Robusto)

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Posted 28 February 2017 - 03:19 PM

One of my buddy's has an FAL that leaves a crease in the spent brass. Could you have gotten hold of some of those for your reload?


''My therapist says I have a preoccupation with vengeance."

 

"We'll see about that.''


#14 Chris Eden

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Posted 05 March 2017 - 11:05 PM

1665697e53a1728a3568babdbdf172dc.jpg7d246d10d7b9679f81953a0a01829730.jpg77169a157585d19d22e1ce098cb8ff14.jpgb7a32782a806d32480b0f62abe62188f.jpg687872258ae01b437590c3b3a4fda087.jpg
Pretty sure it wasn't locked when it fired but who knows



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#15 Chris Eden

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Posted 30 March 2017 - 11:50 PM

Did some loading today, noticed I had pistol primers in the feed tube I haven't loaded pistol in a fair while. When I fired the bad shot there was a kind of double boom, what I'm wondering is could the pistol primer have ignited enough powder to nock the projectile into the barrel then had a second burn creating a major over pressure that caused this?
I've herd of this kind of thing happening with light loads of fast burning powders.
There are some smart fellas on here so just wondered


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#16 King_Mud

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Posted 01 April 2017 - 11:19 AM

Well, it should be nearly impossible for an AR type rifle to fire OOB since the bolt has to be locked for the firing pin to reach the primer.

If you did indeed load pistol primers they have a much thinner cup. It's possible you fired a shot and the second boom was a round going off when impact to the primer set it off. It could have happened before the bolt locked and that would account for the funky case neck since it wasn't totally in the chamber and blown off base since it had no support.




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