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Mar 25th, 2012
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Primer size #7122343
03/25/18 04:16 PM
03/25/18 04:16 PM
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What are the advantages of using 308 small primer brass? I've heard theoretically less SD. Is there a burn rate where small works better? If you do go small, is it better to use small magnum to ensure proper ignition?


Scott
Re: Primer size [Re: scottfromdallas] #7122350
03/25/18 04:23 PM
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Just realized this probably belongs in reloading section.


Scott
Re: Primer size [Re: scottfromdallas] #7122386
03/25/18 05:30 PM
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I suspect the main advantage of small primer pockets is strength of the case head and longevity of brass. If ignition is sufficient...who knows. If it works for the Creedmoor, I would imagine it would work fine for the .308 W.


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Re: Primer size [Re: RiverRider] #7122404
03/25/18 05:49 PM
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Originally Posted By: RiverRider
I suspect the main advantage of small primer pockets is strength of the case head and longevity of brass. If ignition is sufficient...who knows. If it works for the Creedmoor, I would imagine it would work fine for the .308 W.


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Re: Primer size [Re: scottfromdallas] #7122653
03/25/18 10:37 PM
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Thanks brothers. I was looking at Alpha brass and all they had in stock was small primer which I've never tried. I may buy some and see how it does.


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Re: Primer size [Re: scottfromdallas] #7122654
03/25/18 10:38 PM
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You will need a small primer firing pin, in the bolt.



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Re: Primer size [Re: scottfromdallas] #7122727
03/25/18 11:56 PM
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http://alphamunitions.com/kaubers-corner-large-vs-small-rifle-primers/


Donít think itís enough data to be conclusive but interesting

Re: Primer size [Re: scottfromdallas] #7122840
03/26/18 01:19 AM
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Interesting. Thanks. If I switch my firing pin to a small, would it still work OK on large rifle primers?


Scott
Re: Primer size [Re: scottfromdallas] #7122851
03/26/18 01:26 AM
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I would try your existing firing first of course. My 22 Creedmoor works fine with a standard firing pin on both LR and SR but I use tough primers.


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Re: Primer size [Re: scottfromdallas] #7122866
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Sounds good. I mostly have CCI 41 so I bet they would be fine.


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Re: Primer size [Re: scottfromdallas] #7123098
03/26/18 12:44 PM
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Scott look at Copper Creek shooting they may have some regular primer in stock.

Alpha has really taken off and cant keep up with demand. Yes, I bought 100 6.5 Creedmoor and it is really nice.

I don't know if its any nicer than Norma or lapua. I know I'm not good enough to tell the difference.


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Re: Primer size [Re: scottfromdallas] #7123104
03/26/18 12:48 PM
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Used to be an article by the amu that showed smaller sd but it's long gone. Another article by German Salazar showing no difference when testing flash pattern from ppc flash hole vs normal size.

Most seem to think that in extreme low temperatures the small rifle/ppc flash hole like lapua uses causes ignition problems.


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Re: Primer size [Re: scottfromdallas] #7123107
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I'll add that I've ran lapua palma brass on my 7mm-08ai for a good while with zero ignition problems in all weather.


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Re: Primer size [Re: scottfromdallas] #7123186
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What primer have you used. Dee?


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Re: Primer size [Re: scottfromdallas] #7123194
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Cci standard and match along with federal gmm.


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Re: Primer size [Re: Buzzsaw] #7124002
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Originally Posted By: Buzzsaw
Scott look at Copper Creek shooting they may have some regular primer in stock.

Alpha has really taken off and cant keep up with demand. Yes, I bought 100 6.5 Creedmoor and it is really nice.

I don't know if its any nicer than Norma or lapua. I know I'm not good enough to tell the difference.


But then I wouldn't get to tinker with small primer brass! grin


Scott
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