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CCI BR2 in magnum cases?

 
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Old 02-16-2009, 07:55 AM
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CCI BR2 in magnum cases?

Thanks for any advice.

I've no experience with the BR2 primers and we aren't spoiled for choice here right now. I've heard that I should be able to get my hands on some BR2's and wondered whether they are enough for use in the 300WM. 70grs of powder somewhere between 4831 / 7828 type of burn rate.

I can't get a couple from a buddy to test, so any input on this is great. I've found std. CCI LR to be a little lacking with this powder charge.

Thanks for any input on this.

WL
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Old 02-16-2009, 10:46 AM
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Re: CCI BR2 in magnum cases?

I use CCI Mag primers in my 300 WM. And it has a power charge of 73 grs of H4831. Havent used the BR2s in a Magnum before so dont know.
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Old 02-16-2009, 10:50 AM
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Re: CCI BR2 in magnum cases?

The CCI BR2 is essentially a match long rifle primer, not a magnum primer. I limit their use to 30-06 sized cases and if I was using a slow powder like 4831 or 7828 I'd go with a CCI 250 Magnum Primer. The flame is definately hotter.

I use a Magnum Primer in my 7mm Rem Mag and for .388 Win Mag, .300 RUM and and cartridge that I use ball powder. Ball powders need a hotter flame to ignite more consistantly.

Unfortunately, CCI doesn't make a match quality magnum primer. Federal does, however they are hard to find.

Dan
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Old 02-16-2009, 02:00 PM
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Re: CCI BR2 in magnum cases?

you can use the BR2 in the WSM cartidges but not recomended in the wm cartidges
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Old 02-16-2009, 08:01 PM
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Re: CCI BR2 in magnum cases?

Shawn Carlock lists them in several of his loads for the 338 Edge.

I also know that Kirby does not use a magnum primer in any case that holds less than 100g of powder unless he will be in sub-zero temps.

There was a big discussion a while back about the need and use of large rifle magnum primers.
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Old 02-17-2009, 12:21 AM
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Re: CCI BR2 in magnum cases?

Thanks for the replies.

I've had mixed success with std CCI's, hence my question. Every now and then I'd get a very slight only just perceptible "hangfire" which I've never expereinced with magnum primers.

I'll search for the thread you've referred to GearGrinder.

Thanks.

WL
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  #7  
Old 02-17-2009, 01:44 AM
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Re: CCI BR2 in magnum cases?

I have used many of them in 25-06 and never had any problems. I stopped using them when they went to over $4 per 100, they can keep em for that price!!!

I did however do a little experimenting when I had my 300 RUM. I had no mag primers and decided to go ahead and load some of the CCI BR-2's up for the RUM and 200g AB's. I worked up the loads in the winter with a temp of about 30-35 degrees. I was getting 3100fps and great accuracy with 92g of H-1000. Primer seemed to be igniting the powder just fine, no hang fires that I could tell.

So, I load up the remaining cases and go up elk hunting. Temps were a bit colder, anywhere from -10 to 15 degrees. After shooting a few of them in the colder temps, I could tell they were slightly hang firing. I'd squeeze the trigger, hear the firing pin hit, then about 1/2 second later the shell would go off, like a delayed reaction. They still went bang, but I figured the colder temps were the case.

I wouldn't imagine why they wouldn't work with a 300 Win mag when your burning 20g less powder unless your in sub zero temps.
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