R.W.Dale
Member
Most bench shooters will tell you that volume is the more accurate means for measuring charges than weight, well today I made an observation that vindicates this for me.
Last night at 3am I loaded 50 .32acp using 2.2grains of WW231 using my uniflow powder measure with a micrometer metering tube. When I set up for this load I looked at my log book and set the measure to 003.5 that I had been using all along for this load. Upon double checking with my Ohaus balance and a cheap digital both scales concluded that I was about 0.2 of a grain light at 2.0g by weight, after some deliberation I decided to believe my notes and uniflow and loaded up 50 rds on the 003.5 setting I had always used. When finished knowing I would load more when I woke up I left everything as it was capped off the lid on the powder measure closed the door and slept til noon.
fast forward to 2:00 PM today loading up another 50 rds with the uniflow still set at 003.5 untouched from earlier both of my scales now say that the charges thrown weigh the desired 2.2grs
SO what happened in that time period when away from my loading gear, either.
A changes in humidity effected both scales <doubtful>
or
.
B the weight for a given volume of ww231 changed for some reason or another
Also be mindful that my reloading operation is inside a climate controlled room
scientific: not hardly but interesting none the less. Anyone else made similar observations or just care to speculate
Last night at 3am I loaded 50 .32acp using 2.2grains of WW231 using my uniflow powder measure with a micrometer metering tube. When I set up for this load I looked at my log book and set the measure to 003.5 that I had been using all along for this load. Upon double checking with my Ohaus balance and a cheap digital both scales concluded that I was about 0.2 of a grain light at 2.0g by weight, after some deliberation I decided to believe my notes and uniflow and loaded up 50 rds on the 003.5 setting I had always used. When finished knowing I would load more when I woke up I left everything as it was capped off the lid on the powder measure closed the door and slept til noon.
fast forward to 2:00 PM today loading up another 50 rds with the uniflow still set at 003.5 untouched from earlier both of my scales now say that the charges thrown weigh the desired 2.2grs
SO what happened in that time period when away from my loading gear, either.
A changes in humidity effected both scales <doubtful>
or
.
B the weight for a given volume of ww231 changed for some reason or another
Also be mindful that my reloading operation is inside a climate controlled room
scientific: not hardly but interesting none the less. Anyone else made similar observations or just care to speculate
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