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I don't understand what difference it makes, if any, between measuring powder by weight or by volume.
All load data in manuals is stated by weight, not volume.
Logic would tell me that, since the amount of space the powder takes up in either a cartridge or shotshell is important to uniform ignition, that volume would be important.
Also, I think that measureing by volume is more consistant, batch to batch. Weight can vary by lot and needs to be measured regulary, but a charge bar, once set, will throw the same volume.
If this is true, then what is gained by measuring powder by weight?
All load data in manuals is stated by weight, not volume.
Logic would tell me that, since the amount of space the powder takes up in either a cartridge or shotshell is important to uniform ignition, that volume would be important.
Also, I think that measureing by volume is more consistant, batch to batch. Weight can vary by lot and needs to be measured regulary, but a charge bar, once set, will throw the same volume.
If this is true, then what is gained by measuring powder by weight?