what is the best way to measure case capacity?

[Hunt]

what is the technique for using water to measure case capacity for precision rifle handloading. I have a bunch of brass I want to seperate, it has already been fireformed and nothing else has been done to it. what tools are needed, how is it done?

[Boots]

First weight a case and then filled with water. Subtract the addition weight of the water and use this formula to get the volume. 1 Grams = 0.061 023 743 838 Cubic inches

I use this site (as well as many others) to do conversions... http://www.onlineconversion.com/waterweight.htm

[tujungatoes]

First weight a case and then filled with water. Subtract the addition weight of the water and use this formula to get the volume. 1 Grams = 0.061 023 743 838 Cubic inches

I use this site (as well as many others) to do conversions... http://www.onlineconversion.com/waterweight.htm

yup that's how I've done it. but stick with cc's to keep it simple 1:1 ratio

[Fjold]

I just size, trim and chamfer, then sort by weight.

[Boots]

I just size, trim and chamfer, then sort by weight.

That's what I've been doing. And the weight variance is so close with all my batches that I'm just loading them the same. Of course, depending on which projectile I'm using.

[Hunt]

I just size, trim and chamfer, then sort by weight.

I am assuming any difference in the interior volume of the case would make a difference.

[Fjold]

I am assuming any difference in the interior volume of the case would make a difference.

If you resize them and trim them first it uniforms the outside case dimensions so any difference in weight is due to thicker or thinner brass. Cull the top and bottom weight cases and you should have more uniform brass.

[Boots]

I am assuming any difference in the interior volume of the case would make a difference.

It does make a difference as pointed out above. But if you don't load to max power levels, you should be fine. Regardless, it's always a good thing to check them before they are reloaded.