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Query on an early Chrissy present
Got this and know what it is, but not quite how it measures. One side of the scale is marked GRAMM. Have checked with BP and it´s fairly accurate. It goes up to 4 grammes but the scale on the opposite side reads 10 (2 reads 5). So it can´t be grains. It could well be German and was obviously made for BP in that era. Can anyone help with the non-gramme scale?
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Last edited by villiers; 12-16-2012 at 12:10 PM.
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12-16-2012 12:08 PM
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It is a BP powder dispenser.
One scale is in grams, but since the density of powder can vary, it is really a volumetric measurement, not a weight measurement, So the other scale is calibrated as a volumetric measure - most likely cubic centimeters. Many BP shooters prefer a volumetric measurement to ensure a consistent filling of the cartridge case.*
Take an old disposable plastic syringe (from your doctor, dentist or "Apotheker"). Cut the end off closely. You now have a plastic dispenser calibrated in cc.
Use the syringe to dispense 5 cc of BP or something like sugar or semolina into the powder dispenser and see how it matches up to the scale on the brass.
Let me know if I am right!
*With a bit of practice in consistent filling and dispensing one can easily achieve a +/- 0.2 grain tolerance in a powder charge. To do better with a weigher is extremely time consuming and not worth the bother with BP charges of 40 grains or more.
Last edited by Patrick Chadwick; 12-16-2012 at 12:39 PM.
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