OP
scooter123
Member
Arjay, after trying 50 rounds loaded to 6.2 grains and another 50 loaded to 6.5 grains I've pretty much come to concluding this. However, I am having a dickens of a time convincing my Obsessive Half that it would be acceptable to allow any variation in the measured weight.
One bit of good news is that after doing some experimenting on specifics I've now reduced the variation to +/- 0.1 grain. What I've found to work best is to raise a casing into the powder thru flare die, tip a charge into the scale pan, and then immediately throw the lever to the charging position and leave it there. That bit of extra time while I'm weighing a charge then filling the casing along with the vibration of dropped the charged casing and bringing up a fresh casing seems to have pretty much eliminated the way light then way heavy charge. I've also found that keeping a piece of paper under the charging station with a small bit of powder make it easy to dial in the charge to exactly what I want. By doing this I've managed to set a new record of 50 rounds in 1 hour and 12 minutes.
Second bit of good news is that I found some SR7625 at the range I was shooting at Sunday morning so I purchased 2 pounds. While I'm not wild about the increase in sensitivity if it will meter well in my Lee measure that sensitivity may not matter. Worst case I just treat it like I do the Unique and dial in the weight of each charge individually. One plus for the SR7625 is that with an estimated charge weight of only 5.4 grains 1 pound of powder will go a long way.
Bad news is I'm running short on bullets. Next gun show that comes around I plan on buying as many 40 caliber bullets as I can get my hands on even if they are darned heavy to lug around.
