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Anyone use Bullseye in a RCBS Uniflow with micrometer? I normally use A#5 for my 45acp loads but had a pound of Bullseye on hand and decided to try it. The A#5 meters better for me. The Bullseye was anywhere from 0.05-0.15 difference in each load.
I have a Redding model 3 with a micro pistol meter that meters Bullseye very accurately down to 2.5 gr, the Accurate powders I have tried may throw a bit better.
Could be a static problem ? Your variation seems a bit more than acceptable, have you clean your powder throw ? What is the ID diameter of your micro pistol meter, mine is .32" ?
I use BE for all my pistol loads and it is close enough. 4.3gns for a 180gn lead .40S&W. My Dillon will barely if at all deviate, maybe .1 and being that I'm under the max load by a bit I'm fine with that. For .45ACP I've gone up to 5.3gns behind a 200gn lead blob, my FNP 45 liked that quite well. For the 1911s I have to tone it down a bit tho.
It appears to me that you are getting very good accuracy with your powder measure. The only way to be exact every time is to hand weigh each round using a powder trickler.
I have been loading Bullseye (my primary powder) through my UNIFLOW for over 10yrs, it meters as well as any powder I have tryed. Always within 1/10th of a grain measured on my 502 (that is as close as it weighs) . If you are getting different charge weights by more than that, you have oil, dirt or something causeing it. Anyway, in an answer, yea, BULLSEYE meters great.
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