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Seeking advise on primers


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Small rifle primers in lieu of small PP.

With no supply of components out there i have been told small rifle primers can be used but gains 25fps or so with no disadvantage. 
 

any thoughts?

 

im using a cz czechmate 9mm with 125g bullet, and 3.7g vitavouri

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  • 2 weeks later...

Stock Main Spring for me as well.  Load and test in YOUR gun. ;) A match is not the place to find out they don't work.

You're thinking "Thanks Captain Obvious" - If you shoot matches very long you'll see someone do something just as silly!  😄

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  • 2 months later...

Don’t count on an extra 25 FPS. 
I had chrono data for SP, SP match, SP magnum and SR plus match and Magnum. 
Same barrel. VV 320.  Zero or MG. 
Close  to a thousand data points. 
The same chrono band used at Nationals. 

I never saw a 25 FPS variance. 
 

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what about worry about breech face erosion ?

I have read quite frequently of 9mm open major guys using small rifle, but there pressure is UP there.

Also I imagine minor loads with really fast powders have a decent peak as well, but what about minor loads with a bit slower like 231 or unique burn rates ?

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On 10/16/2020 at 12:56 PM, Silver_Surfer said:

 This thread is a good read, not sure I would do it, I would find someone to trade for SPP. Yes sounds like it works for most, but some items to be concerned with for sure. Not worth the risk in my mind.

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  • 1 month later...

A year ago I bought 5000 Wolf small magnum rifle primers  20 dollars a 1000. thought it was a mistake. Today I'm using them in a old trojan 40sw with 4.1 WST They are working great.  Looks like I can now shoot  for a year without getting into my SPP stash very much.

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  • 6 months later...
On 12/24/2020 at 2:23 PM, pjb45 said:

Don’t count on an extra 25 FPS. 
I had chrono data for SP, SP match, SP magnum and SR plus match and Magnum. 
Same barrel. VV 320.  Zero or MG. 
Close  to a thousand data points. 
The same chrono band used at Nationals. 

I never saw a 25 FPS variance. 
 

correct I have had the same in my data, nearly exactly the same ( all federal primers)

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  • 5 months later...

For the same brand, small rifle is exactly the same as small pistol magnum, identical dimension and cup thickness. The cup is gonna be slightly thicker than small pistol, but most of the shooters I know have little issues with federal brand.

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  • 1 month later...
On 2/14/2021 at 5:01 PM, Stjs45 said:

Watch this video!!!! It explains and charts the difference from all the different primers. Best testing around!!!

 

 


That was good.  Thanks!

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  • 2 weeks later...

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