Measuring Blackhorn 209 by volume vs weight

[Pooch]

I'm kinda new to muzzleloaders so be gentle, I have CVA Accura and planning on using the 209 powder with 250 gr. Powerbelt ELD's on elk. I have read a bunch of threads and am a little confused. Can I just use a volume say 100 grains to start and work up or down to get best accuracy? TIA

 

[swavescatter]

Best accuracy = weigh each charge. Density/packing fraction varies lot to lot.

Edit - and start a lot lower than 100 grains. My CVA LR/X with Arrowhead LRMP plug shot 75 grains really well.