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A&D Fx120i vs Chargemaster

fairchaser

fairchaser

Well-Known Member
Joined
Sep 13, 2011
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Location
TN, USA
I weighed out 10 rds of Varget using my chargemaster using the trickle up method and gave them to my friend who has an A&D Fx120i scale. I run the chargemaster .1 low and then use a vibrating trickler to drop one granule at a time until the scale on the chargemaster just changes to the next .1 grain.

I was surprised at the results. The A&D is a magnetic restoration balance scale that weighs down to the .01 grn vs the chargemaster strain gauge which weighs to the .1 grn. Each granule of Varget weighs .02 grns. Of the ten charges, 6 were dead on to the 100th of a grn. Meaning to the granule of powder. 3 charges were within 1 granule of powder and 1 was low by 4 granules. I'm not sure what happened on the one charge. But, I feel confident that my method will give you consistent charges to within 1 granule of powder.

Based on my calculations, 1 granule of powder is equal to 1 FPS or 1 tenth of an inch at 600 yds.
 
MUP said:
So which one was wrong? 😁
Click to expand...

It was number 6. But, he could have fumbled a few granules or I could have. I re weighed it and it was light on my scale too. Idk what happened. It still would only make 1/2 inch difference at 600 yds. I probably can't shoot well enough to make that difference. I'm satisfied that I don't need to upgrade my system to the auto trickler.
 
fairchaser said:
It was number 6. But, he could have fumbled a few granules or I could have. I re weighed it and it was light on my scale too. Idk what happened. It still would only make 1/2 inch difference at 600 yds. I probably can't shoot well enough to make that difference. I'm satisfied that I don't need to upgrade my system to the auto trickler.
Click to expand...
What trickler do you have. I'm thinking about getting the Little Dandy
 

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