Correct method for measuring muzzleloader charge
When measuring a certain volume charge (let's say for example 100 grains), should the container holding the charge be tapped on after the charge initially reaches the 100 grain level (to make it settle/compact) in the charge measuring device and then top off the device again by adding enough charge to bring it to the 100 grain level OR should the charge be brought to the 100 grain level (WITHOUT any tapping to make the charge settle) ?
I know that which ever method is chosen it should be done on a consistent basis but I am wondering what is the proper method to get a true 100 grain (volume) charge, i.e. compacted or not compacted.
Also, I know that the real best way would be to measure each charge by WEIGHT to have the most absolute consist measure(s) possible between charges.