Powder Volume to Weight
02-21-2017 | 02:26 PM
#41
Boone & Crockett
Joined: Apr 2007
Posts: 10,918
Likes: 1
From: River Ridge, LA (Suburb of New Orleans)
This should be interesting. I just sent the same query to each of the following:
[email protected]
[email protected]
[email protected]
I bet I don't get a response from any of them.
[email protected]
[email protected]
[email protected]
I bet I don't get a response from any of them.
Subject: Black Powder Measure Calibration
BACKGROUND: Our group of black powder shooters have noted that, when set at 100 grains and filled with GOEX FFFg powder, our various adjustable powder measures do not throw charges that weigh the same. The variance between different manufacturer’s measures was as great as ten grains. The filling was done very carefully. We tried filling the measure so as to avoid settling of the powder before striking off overfill, and by tapping the measure to settle the powder as much as possible before striking off overfill.
Some contend measures are calibrated based on the actual weight of 2F black powder, some contend it’s 3F powder, and some contend it’s based on the volume and weight of water, i.e. 100 grain weight of water = 100 grain volume.
QUESTION: Can you provide any information as to how *** Adjustable Black Powder Measures are calibrated?
(*** was Traditions, CVA or TC, as appropriate.)
BACKGROUND: Our group of black powder shooters have noted that, when set at 100 grains and filled with GOEX FFFg powder, our various adjustable powder measures do not throw charges that weigh the same. The variance between different manufacturer’s measures was as great as ten grains. The filling was done very carefully. We tried filling the measure so as to avoid settling of the powder before striking off overfill, and by tapping the measure to settle the powder as much as possible before striking off overfill.
Some contend measures are calibrated based on the actual weight of 2F black powder, some contend it’s 3F powder, and some contend it’s based on the volume and weight of water, i.e. 100 grain weight of water = 100 grain volume.
QUESTION: Can you provide any information as to how *** Adjustable Black Powder Measures are calibrated?
(*** was Traditions, CVA or TC, as appropriate.)
Last edited by Semisane; 02-21-2017 at 02:31 PM.
02-21-2017 | 02:27 PM
#42
Thread Starter
Boone & Crockett
Joined: Aug 2004
Posts: 11,703
Likes: 0
From: Idaho
Great find Lee - thank you for the information... and supposedly all BP and BP subs are suppose to follow this. So Blackhorn and Swiss should be nearly the same +/- the variance that has been assigned.
02-22-2017 | 08:03 AM
#45
Boone & Crockett
Joined: Apr 2007
Posts: 10,918
Likes: 1
From: River Ridge, LA (Suburb of New Orleans)
WOW! A one-day response from CVA/BPI. I'm impressed.
Van,
Our powder measures are calibrated as if the volume was being filled with
original Black Powder. Each powder has a different density and we calibrate the
measures to be a by volume equivalent to original black powder. Loose Triple 7
has a lighter density and 100 grains by volume of loose Triple 7 if weighed on a
scale would weigh less than 100 grains. Blackhorn 209 powder lists the maximum
charge to be 120 grains by volume. The actual weight of 120 grains by volume is
only 84 grains on a scale. One hundred grains by weight of Blackhorn 209 would
exceed the safe usable limit established by the Blackhorn 209 manufacturer.
Because of the actual weight variations of each powder we use only a by volume
equivalency of original black powder.
Ken Morgan
Customer Service Supervisor
800.320.8767
Our powder measures are calibrated as if the volume was being filled with
original Black Powder. Each powder has a different density and we calibrate the
measures to be a by volume equivalent to original black powder. Loose Triple 7
has a lighter density and 100 grains by volume of loose Triple 7 if weighed on a
scale would weigh less than 100 grains. Blackhorn 209 powder lists the maximum
charge to be 120 grains by volume. The actual weight of 120 grains by volume is
only 84 grains on a scale. One hundred grains by weight of Blackhorn 209 would
exceed the safe usable limit established by the Blackhorn 209 manufacturer.
Because of the actual weight variations of each powder we use only a by volume
equivalency of original black powder.
Ken Morgan
Customer Service Supervisor
800.320.8767
