![]() ![]() As powder goes, you'd be hard pressed to find a canister powder for less per pound and most surplus is up at that price point. PROMO is commonly available for around $10.50 a pound. Perhaps the newer design Auto-Disk would resolve this with the wipers and better hopper design. I did see some flakes escape between the bottom of the hopper and top of the disk but this tends to happen with very small ball powders like Accurate #9 as well. In my Lee auto-disk powder measures it was repeatable and reliable with no bridging or clumping. This is not a noticeable problem however. It is a little bit fluffy and seems to have more static electricity issues than the ball powders I normally load. It appears as thin wafers approximately 1mm in diameter, coated dark grey with graphite. I was told that PROMO is actually the "old recipe" RED DOT from before the product change to "New, Cleaner Burning RED DOT" on the label, and without the red taggants. My conversation with the Alliant techs revealed that they say it can be used as a substitute for RED DOT when measured by weight, not volume since the density is different. It is only sold in 8# kegs and Alliant publishes only shotshell data for this powder. PROMO is a powder marketed by Alliant towards bulk shotshell reloaders and gun clubs. During this time I started messing around with Alliant PROMO powder. This can result in over charging if you work from the same setting and the next container of powder you get is more dense.Some time ago I started toying with the idea of trying to find the absolute cheapest loads I could possibly make, while still maintaining accuracy, reliability, safety and cleanliness, and using commercially available components- no old surplus or garage sale stuff. It is very important that you repeat this process with any new container of the same powder because the powder companies allow themselves a 16% tolerance between batches. = VMD (volume in cc's for 1 grain of powder) The result is the volume (cc) of a single grain of powder (VMD) Divide the measure setting you used to drop the charge by the weight of the charge. Using any setting on your powder measure (preferably a whole number), drop a charge of the powder you wish to determine the VMD for. We attempt to keep a current list of newer powders and their VMDs on our instructions page on the website at: 43cc setting on the Perfect powder measure. 3cc dipper, (because the next larger one is beyond.43 ccs) the. 1064 , and the desired charge weight is 4 grains, ![]() If you have a scale check the weight of the powder charge dispensed by the disk combination. You choose the disk combination that is closest in size to the value of the formula without going over. Once you know the number of cubic centimeters it takes to hold the powder charge you wish to dispense you can choose the proper disks. You can find the Powder VMD's by clicking on instructions at our website ( and scrolling down to the bottom of the page and clicking on Powder VMD's. Or grain weight x VMD = cubic centimeters. If you multiply the number of grains you wish to dispense times the VMD value the answer is the theoretical volume in cubic centimeters that are necessary to hold that grain weight of powder. This can be used to calculate the dipper, disk cavity or powder measure setting required to obtain a desired weight of powder. The powder companies provide a VMD number or value for each type of powder. The Volume Measured Density (VMD) of a powder is the volume in cc's (cubic centimeter) that one grain of powder occupies. ![]()
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