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Which Primer for my .300 Win Mag Load?

 
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  #1  
Old 04-22-2014, 03:56 PM
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Location: Las Vegas, NV
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Which Primer for my .300 Win Mag Load?

Hi Guys,

Just got my Remington 700 .300 Win Mag. I want to start my load development.
I will be using some Federal once fired brass, Berger 185 gr. Juggernauts bullets,
Hodgdon H-1000 powder.

I have both Federal Large Rifle Match 210M and Large Magnum Rifle 215M primers as well as CCI 250 primers.

Which do you recommend I use?

Thanks.

MDslammer
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  #2  
Old 04-22-2014, 04:13 PM
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Re: Which Primer for my .300 Win Mag Load?

what your load book recommends
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Old 04-22-2014, 04:15 PM
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Re: Which Primer for my .300 Win Mag Load?

I would only use large magnum primers.
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Old 04-22-2014, 05:11 PM
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Re: Which Primer for my .300 Win Mag Load?

Quote:
Originally Posted by MTBULLET View Post
what your load book recommends

I've already checked. It was the first thing I did.

The Berger Reloading Manual, 1st edition does not list any primer recommendations for the 185gr. Match Juggernaut Target. Only Start load, Start Vel. Max load, Max Vel. & Fill Ratio.

Thanks anyway.
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  #5  
Old 04-22-2014, 05:13 PM
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Re: Which Primer for my .300 Win Mag Load?

Here's a good rule of thumb to use...

If the cartridge uses a "magnum" bolt face, most likely it's a magnum....So use a Large Rifle Magnum primer.

If it's is a .30-06/270/280/25-06/308/243/22-250 (or anything else based on a "standard" bolt face, then use a regular Large Rifle primer.

And use Small Rifle primers for .223/5.56/.300 Blackout size cases.
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Old 04-22-2014, 05:16 PM
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Re: Which Primer for my .300 Win Mag Load?

Quote:
Originally Posted by smokeumm View Post
I would only use large magnum primers.
Well, that's what I was thinking to. Either the Federal 215M or the CCI 250.
I read on a couple of other forums some guys were trying the Federal 210M
which seemed odd not being a magnum primer.

Thanks for posting smokeumm.
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  #7  
Old 04-22-2014, 05:18 PM
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Re: Which Primer for my .300 Win Mag Load?

Quote:
Originally Posted by MudRunner2005 View Post
Here's a good rule of thumb to use...

If the cartridge has a case larger than a .30-06, most likely it's a magnum....So use a Large Rifle Magnum primer.

If it's is a .30-06 sized case, or smaller, use a regular Large Rifle primer.

And use Small Rifle primers for .223/5.56/.300 Blackout size cases.
Hmmm. Good to know MudRunner2005. Thanks.

So would I be correct in assuming that the Federal 210M and the Federal 215M are both the same diameter but the difference being in the charge and it's intent or use?
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