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Changing primers

 
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  #1  
Old 06-14-2013, 02:08 PM
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Join Date: Jan 2011
Location: texas
Posts: 344
Changing primers

My federal match primers have ran out large rifle .
All I can get is CCI large rifle .

My question is how much should I back down my loads
308 178 Amax with 43.2 grains of RL15

Thanks
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  #2  
Old 06-14-2013, 02:14 PM
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Re: Changing primers

According to my Hornady 7th edition loading manual you are already way over the max load. They state 41.4 grs RL15 as the max load for a 308 Winchester with the 178 to 180 gr bullets. I would back off quite a bit.
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  #3  
Old 06-14-2013, 02:33 PM
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Re: Changing primers

The Federal's are a touch hotter than the CCI's. Not much risk just running your pet load with the new primer. I also agree with RT2506, you're on the upper end. If you feel the need to back down go down a half grain and work back up to your node.
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Old 06-14-2013, 03:00 PM
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Re: Changing primers

Error my load is 42.3 of RL15
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  #5  
Old 06-14-2013, 09:01 PM
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Re: Changing primers

Quote:
Originally Posted by birddog67 View Post
My federal match primers have ran out large rifle .
All I can get is CCI large rifle .

My question is how much should I back down my loads
308 178 Amax with 43.2 grains of RL15

Thanks

With H4350 I have the CCI200's being .3 grains cooler for the same velocity. For example 42.5 grains with a Fed 210M is the same as 42.8 grains with a CCI 200.
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  #6  
Old 06-15-2013, 08:30 AM
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Re: Changing primers

FYSA only, The Rifleman's Journal: Primers - Large Rifle Primer Study

and

http://www.the-long-family.com/primer_study.htm
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