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Old 11-12-2012, 07:43 PM   #1
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I've a 338 Lapua that I finally shot this weekend. Maybe it's normal (though I'm sure it's not) but I noticed wen shooting that I pull the trigger and I hear the firing pin hit before monster bang.

I reloaded my own rounds to sight it in with and it's the fist I've done for the 338 so maybe I jacked something up. Dunno. Lapua brass, 87 gr Magpro powder, federal primer, and 250 gr hornady bullet.

Any ideas or insight?

I've got a video I can post later where you can hear it but can't post it from my phone.



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Old 11-12-2012, 07:48 PM   #2
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Sounds to me like your powder might be contaminated.



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Old 11-12-2012, 08:26 PM   #3
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Maybe better earplugs?


Dang! 250 grain is not small. I would like to see a bear shot with one of those, maybe a few of those.

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Old 11-12-2012, 10:19 PM   #4
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What you are describing is called a hang fire. Generally caused by primer issues. A primer that is not seated properly can do this. A slightly contaminated primer can do this. You did not specify the type of primer, only Federal. A Magnum primer is required to set off such a large charge of powder. If you were using the Federal 215 (Magnum primer), you may consider switching to a different brand as each make/type of primer burns a little different. Perhaps a Winchester large rifle Magnum primer will be hotter and more easily sets off the charge.

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Old 11-12-2012, 10:52 PM   #5
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http://s63.photobucket.com/albums/h149/middletonmd/?action=view¤t=CA192EE8-63F9-4C80-9068-BBD62CB6FDD2-558-000000355AC4EBA2.mp4&evt=user_media_share

That video might work from my phone. You can hear the click just before the bang.

Thanks for the help robocop. I am using the lighter large primers. They worked great on the 308 but I'll be sure to pick up some better ones this weekend.
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Old 11-12-2012, 10:58 PM   #6
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says "private album"

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Old 11-12-2012, 11:07 PM   #7
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Quote:
Originally Posted by orangello
says "private album"
:-(

.......
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Old 11-12-2012, 11:42 PM   #8
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I think Robocop picked the issues but try this one. You can hear the click just before it goes off.

http://www.youtube.com/watch?v=MrYklLa5X0g&feature=youtu.be

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Old 11-12-2012, 11:59 PM   #9
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Magnum primer.

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Old 11-13-2012, 01:18 AM   #10
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Quote:
Originally Posted by CourtJester View Post
I've a 338 Lapua that I finally shot this weekend. Maybe it's normal (though I'm sure it's not) but I noticed wen shooting that I pull the trigger and I hear the firing pin hit before monster bang.

I reloaded my own rounds to sight it in with and it's the fist I've done for the 338 so maybe I jacked something up. Dunno. Lapua brass, 87 gr Magpro powder, federal primer, and 250 gr hornady bullet.

Any ideas or insight?

I've got a video I can post later where you can hear it but can't post it from my phone.
Sounds like a hang fire. Do you keep your powder in a cool, moisture proof area. Might also be some other contamination...you should never hear the hammer drop on the primer...any delay between trigger pull and BOOM is not normal...unless you are firing a flint lock musket.


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