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Who makes good brass for the 7mm rem mag?

 
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  #1  
Old 01-22-2010, 11:50 PM
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Who makes good brass for the 7mm rem mag?

Looking for info on where to go for good brass for the 7mm remington mag?
I am currently loading winchester brass, I cut the primer pockets and deburr the flash holes. I do not weight sort or turn the necks, I've heard win necks are not very uniform, but the brass seems to be working as far as accuracy is concerned. Current groups are under half inch .415 for five. My rifle has a match chamber.
Would weight sorting and neck turning improve accuracy? I'm happy with how its shooting now but my main problem is that my neck tension is gone after 2-3 loads.
Would annealing remedy the neck tension problem, or are the cases worth all the effort? Where do I go for better cases?
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  #2  
Old 01-23-2010, 12:43 AM
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Re: Who makes good brass for the 7mm rem mag?

Just taking a stab at this. Do the case mouths look or feel brittle? I have some Nosler brass in 308 that is getting this way and I plan on annealing them before any more loads.

As far as your accuracy is concerned, it sounds like you're where you should be.
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Old 01-23-2010, 05:05 AM
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Re: Who makes good brass for the 7mm rem mag?

Well I have used Remington, Winchester, Federal, and Hornady, take your pick, in my rifle they all shoot about the same as far as accuracy. That said, I find different issues with each brand after a few loads.

With some, the pockets seem to loosen up really easy, others stretch lengthwise excessively to the point I only get a couple of loads, some as you mention seems to get loose necks or excessive spring back, which I haven't tried annealing yet.

Overall the most used in my loads is Winchester, with Remington being right there along side. The accuracy load in my rifle will shoot both brands into nice 3/4" or so groups at 200yds using the 162gr Hornady SPBT.

If your set on Win or have a large number on hand, go ahead and pull out 10 or so and do the anneal on them. At least you will find out if that is the issue. Lets us know what you find out.
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Old 01-23-2010, 09:36 AM
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Re: Who makes good brass for the 7mm rem mag?

I really like the Norma brass for the 7mm. The flash holes are drilled, and the pockets are nice and uniform. There is very little prep that needs to be done. I have shot mine 5 times, and there hasn't been any head expansion, and I only had to trim them once, even with near max loads. The volume of the Norma cases was slightly larger than the Federal cases I was using, so I ended up add 1 gr. of powder to produce equivalent velocities.

I would just anneal your cases. I bought a "pencil" tip for my propane torch, and picked up some Tempilaq 650. I put a little of the Tempilaq on the inside of the neck, and then annealed the cases (neck and a little of the shoulder only), until the Tempilaq melted. This turned out to be around 7 seconds with my setup per case. Doing this should restore your neck tension.
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Old 01-23-2010, 12:20 PM
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Re: Who makes good brass for the 7mm rem mag?

Thanks for the info, I have around 500 win brass right now but preping the cases takes alot of time and when you can get only 2-3 loads out of a case that sucks.
I don't always have as much time to reload as I would like, so if I would have to spend more for norma cases to cut my reloading time a may have to do that. Any more info would be great.Thanks.
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Old 01-23-2010, 02:30 PM
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Re: Who makes good brass for the 7mm rem mag?

188Mule, what type of resizing die are you using?
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  #7  
Old 01-23-2010, 05:23 PM
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Re: Who makes good brass for the 7mm rem mag?

can't imagine only 2-3 reloads. what are your loads?
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