The drop tube that came with my BP dispenser is much too long, so that the dispenser´d either be at ceiling height or the end of the tube below floor level.
I´ve found that there definitely is an advantage in accuracy to be gained in measuring precise BP weights per case. So now I place an empty case on the digital scales and press "zero". I then fill the case at the desired setting on the dispenser and check the measurement on the scales. I tap the full case to let the powder settle and seat the bullet. Thus I now use precise loads. The only component that is NOT precise is the blob of grease under the bullet.
I´ve now found that (unexpectedly) the short Werder cav. carbine is very accurate ... unlike the Mauser, even though the Mauser is in practically new condition. Cleaning is a lot easier than I thought it would be. The whole of the Werder action is removed to clean the barrel.