NoslerReloading.com

NoslerRocks · Joined: 05 Feb 2008 Posts: 5 Location: Washington

I have a ballistics program and one of the variables I need to input is the total case capacity of H2O. I called Nosler customer service and the only thing they could give me is the powder capacity in grains of H2O depending on the type of bullet seated. I need the total case capacity on Nosler .270 WIn in grains of H2O with nothing seated.
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DrMike · Posted: Wed Mar 10, 2010 3:24 pm Post subject:

Plug the flash hole with a bit of wax (Imperial Sizing Wax works fine for this, or steal from bees wax from your wife's sewing table). Set out a container of water overnight to allow it to bleed off extra oxygen. Weigh a case on which you have plugged the flash hole. Tare your scale to this weight or note it on a piece of paper. With a syringe or eye dropper, add the deoxygenated water until you get a meniscus formed at the top. Now weight this. If you previously tared the scale to the empty brass, you will have the weight in grains of water. If you did not tare the scale, subtract the weight of the case from the weight of the case with water to arrive at the weight of the water in grains.