Assorted brass and accuracy

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Just sorting through brass to get ready to enlarge bullet diameter of brass (from .308 to 358).
I have brass from Imperial, Dominion, R.P., and Winchester.
The Imperial comes with two different font sizes. One set of cases has a large font the other is so small it can hardly be read. Anyway, has any used these cases and have you found any large variance in accuaracy between the cases.
 
I always found imperial brass heavier than other comericial brass, Resizing is also much more difficult due to the brass thickness.
Dominion usually is the same wieght as todays commercial brass however being so old it will need to be annealed before resizing to .358 (you should anneal all the brass before making such a jump in size).
Case capacity will be lower with the heavy brass, it's more like military brass. (use a grain less powder to be safe)

For accuracy, I sort my cases for head stamp and weight.
Never mix brass for accuracy loads.
 
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I'm not a benchrest shooter and no doubt they will tell you to segregate all the different batchs' of brass for maximum safety, best accuracy , etc. etc. ,while working up loads and they are correct.
If my loads are around an inch or less it works for me. ........ IMPERIAL, imperial, and Dominion ( ...when all are in good shape) are used in load work up together as I believe they were made by the same factory(s) and just in different decades in Canada . The winchester, rems, or any others I keep in seperate batchs and work up loads separately.

If your standards for accuracy differ, than keep them all separate..


hs 4570...........your mileage may vary
.'
 
I have necked up alot of 308 Imperial brass to 358, I have never lost a single case in necking up. Use plenty of lube inside the neck and a tapered neck expander. a q-tip dipped in lube is a good idea, most of my brass has the smaller printing. I segregate cases by necking up, trimming to equal length and then weighing each case. The Imperial cases are great cases to work with but they are too thick if you are using extruded powders and loading for maximum loads, the ball powders will work well right up to max loads. The factory WW358 brass has been consistently thinner and has allowed more powder to be loaded into the case but they will also bulk out with some loads, my advise is to use the fastest burning powder that your rifle shoots accurately this will save valuable space in the boiler room. A light crimp is also a good idea for consistency, use the Lee factory crimp die for this. My best loads have been with the Hornady 200 Spitzer, I have taken a few deer with this bullet but never recovered any always pass throughs with good exit holes. Another bullet is the 250 Speer for the larger game or for an all around load if larger game is hunted.
bigbull
 
sorting brass is a load of hooey, at least for hunting/sporting arms, and any other rifle where that last 1/4" MOA is a big deal. Out to 300 yards, even quite large variances in MV have minor/negligible impact to accuracy.

But considering how easy it is to sort brass, why not do it? You may not NEED the minor incremental gain in accuracy, but it's a 'low hanging fruit.' It's not difficult or time-consuming like neck turning or weighing & sorting each piece. (or deburring/truing flash-holes; or measuring/sorting by concentricity, or cleaning/polishing brass, or sorting by ogive, or meplat trimming; or any of the other benchrest tricks that add very minimally to accuracy but add significantly to effort/time required.)
 
prosper said:
sorting brass is a load of hooey, at least for hunting/sporting arms, and any other rifle where that last 1/4" MOA is a big deal. Out to 300 yards, even quite large variances in MV have minor/negligible impact to accuracy.

But considering how easy it is to sort brass, why not do it? You may not NEED the minor incremental gain in accuracy, but it's a 'low hanging fruit.' It's not difficult or time-consuming like neck turning or weighing & sorting each piece. (or deburring/truing flash-holes; or measuring/sorting by concentricity, or cleaning/polishing brass, or sorting by ogive, or meplat trimming; or any of the other benchrest tricks that add very minimally to accuracy but add significantly to effort/time required.)
Click to expand...

:eek: Stay with the program prosper , the question Super Scout asked was :
Anyway, has any used these cases and have you found any large variance in accuaracy between the cases.
Click to expand...
 
^ OK, short version for those who don't want to read it all:

Yes to 1 and no to 2.

I've used mixed brass, and not seen a large accuracy difference.
 
sorting brass is a load of hooey, at least for hunting/sporting arms, and any other rifle where that last 1/4" MOA is a big deal. Out to 300 yards, even quite large variances in MV have minor/negligible impact to accuracy.
Click to expand...

It won't be hooey if you are loading maximum loads and the volume difference between cases results in an overpressure situation.:D

And yes mixing cases can affect accuracy.
 
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