Uniflow Powder Measure Experiments (lots-o-pictures)

[cfullgraf]

All the powder that I have is in metal cans. You have the new

I have been reloading since 1980 and have always known W231 as a flattened ball powder.

I could remember it wrong. It won't be the first time.

 

[zeke]

"I have never seen any difference in charge weights due to any difference in quantity in the Uniflow powder measure."

"I do need to report much more comprehensive test results rather than the single examples I report here, but I can assure you the results won't show any difference."

First an test based on single data point. Then a conclusion pre-determined on a proposed further test.

 

[soloban]

What I think would be more interesting would be to collect data on the consistency of the Uniflow using a variety of common powders in a variety of powder micrometer settings equivalent to a nominal 25/50/75 grain throw. I suspect that charge volume may not play a large factor and that the powder is more of the critical variable. Example:

-Select three to four stick powders that vary by size from small to large (4895, 4064, etc...)
- Select three to four ball powders (H110, Win748, etc...)
- Select three to four flake powders (Unique, Blue Dot, Red Dot, etc...)

Then create a table with the details. It would be interesting to know say, if I use my Uniflow and 4895 set for a nominal 50 grain throw how much variance can I expect.

 

[918v]

I disagree. There is a measurable difference if you use a precise scale.

 

[bergmen]

"I have never seen any difference in charge weights due to any difference in quantity in the Uniflow powder measure."

"I do need to report much more comprehensive test results rather than the single examples I report here, but I can assure you the results won't show any difference."

First an test based on single data point. Then a conclusion pre-determined on a proposed further test.

Let me clarify (which is what I tried to do earlier in this post). After more than twenty years of reloading with these four powders I never saw charge weight variations from full hopper to nearly empty hopper with the Uniflow. Hot, cold, damp, dry, no difference.

I did not collect data points throughout those years but never once saw an anomaly charge weight consistency full to nearly empty.

What I am stating above is the need to so to establish the foundation for my findings, rather than the reported example of one per powder.

Dan

 

[918v]

Your beam scale is not as sensitive as a digital scale.

 

[bergmen]

Your beam scale is not as sensitive as a digital scale.

I've got a digital I could use as a comparo. It's not the best in the world but it should do.

Dan

 

[atblis]

Let me clarify (which is what I tried to do earlier in this post). After more than twenty years of reloading with these four powders I never saw charge weight variations from full hopper to nearly empty hopper with the Uniflow. Hot, cold, damp, dry, no difference.

Great. Show us the results that prove that.