Using brass from different manufacturers

Montefeltro

CGN Regular
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Barrie, On
Quick question. Is there any major difference in brass between manufacturers? If I prep the brass to the same spec, would my loads produce that same results? Not going for extreme precision but i like to keep sub moa.
 
I sort it by manufacturer when loading. Even with pistol brass as I find crimp tension varies from one brand to the next.
 
Try and see for yourself. If you do load development you likely will not be happy with the results, Case volume and neck tension vary widely by manufacture. Since you are looking for sub-moa performance you should stick to the same manufacture. If you do use different makers then stay away from the max loads as you may run into overpressure with certain brands.
 
Watch case volumes!!! I have had some cases that were considerably different in capacity than others [W-W vs R-P in the 7x57]

Enough difference that a safe load in the W-W brass blew the primer in an R-P case. [Also, the chronograph told a bit of a story, lol.]

I always separate my cases by Manufacturer and lot number [if possible]

Regards, Dave.
 
If it is for a rifle and you want sub moa you need to separate by headstamp for sure if you are loading full power loads it could make a over pressure do to case volume pistol 9mm I don't bother separating 45 auto I do but probably don't need to not doing matches.
 
For rifle, you need brass from the same maker, same lot number, with the same history. This means you start with factory new brass, or buy once fired brass that came form a single source. (Difficult to find.)

Brass varies quite a bit from maker to maker in terms of volume and neck tension. And it changes as it gets fired, so you can't mix fresh brass with brass that has been shot 10 times.

I generally start with 500 to 1000 new cases and sort them by weight, putting them in 50 rounds plastic boxes. Once I start to get split necks ( 10 to 20 firings, depending on the brand of brass) I toss the brass and start over.

For pistol I mix it all up and shoot.
 
If your reloading on a budget don't stress about buying new I have shoot good groups with range pickup but if your feeding a expensive barrel burner you need to do it right as above-mentioned.
 
It may have been mentioned already. But a "safe load" in one brand of brass may blow up your gun if you use the published charge in a different brand. Some chamberings differ by a lot between brands. 300 win mag is one of em.
 
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