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01-02-2015, 01:00 PM
Yes there is. What you see on those numbers is the volume of the bushing in CC. If you go to the leeprecision.com site , under the "Instructions" tab, you will see a VMD document. This document gives you factors for each powder that when multiplied by the weight in Grains of the desired charge will give you the volume in CC you need. I attached it to this post. Find the bushing closest to that volume and start there. I never use the published bushing without weighing the actual charge. Frequently the data is off one or two bushings due to a number of factors not limited to: Atmospheric Pressure, Powder Lot to Lot Variances, use or non-use of a baffle in the powder system etc.