volume = weight

[500Linebaughbuck]

i was making my loads(70gr of bp/volume) and i decided i could weigh mine on the powder scale. i choose 6 out of 24. this is what i got.

volume - weight
70gr - 75.4gr
70gr - 74.8gr
70gr - 75.1gr
70gr - 75.3gr
70gr - 74.4gr
70gr - 74.6gr

now i could do it on a powder scale, say 75gr. but i like my powder measurer so i'll continue 70gr/volume.

does anyone use their powder scale? are the numbers close?

[mozeppa]

well to start with....it depends on the powder you use as to whether or not the numbers would ...
or would not be "close".

while you can achieve the same volume of powder using any powder...their weights will vary greatly!

use the load books ...don't guess ...be safe.

[Larry Gibson]

^^^^^^^^

Also, besides the make of powder, any variation will depend on the granulation (Fg, FFg or Fffg) your measure was calibrated with/for.

[mooman76]

Some bench shooters will actually weigh powder but it's not practical out in the field. Even reloaders who load and shoot center fire guns typically use a volume measure. They may weigh a few loads to make sure they are on track but when they load they are using a volume measure. That is not including bench shooters or someone that wants the exact precision.

[idahoron]

My load is 80 grains of Pyrodex P. That weighs an actual 64.5 grains. I did this so I can test the calibration and if the measure gets moved I can get it back to where it is supposed to be.

[rodwha]

It's as Larry mentioned.

All powders weigh differently. And then measures are calibrated differently as well (F, FF, FFF).

My adjustable rifle powder measure throws 30 grns of 3F Olde Eynsford, which weighs about 33 grns according to the few times I weighed it to see.

[sharps4590]

With BP and muzzleloaders volume measurement has always been accurate enough.

[charlie b]

I have done the same kind of thing with measures. The finer the granulation the better the measure will work.

For example, with Pyrodex RS the variation between measured loads is a few grains. With Pyrodex P it is within a grain most of the time. When using the coarser powders I weigh the charges. Also, 70gn measured of coarse powder weighs differently than 70gn measured of finer powder. I have also found that any change in throw technique can change the charge, eg, tapping the measure or moving it faster or slower.

FYI, different powder measures will throw differently. If your measure has a thinner, longer chamber it will not do as well with the coarser powders.

When I load smokeless stuff (mostly .223) I use a measure for loading. I check every tenth load or so with the scale. I also use mostly ball powder as it goes through a measure more accurately, usually +/- 0.1gn

[500Linebaughbuck]

thats why i still use a bp powder measurer. i used my scale just because.

[Edward]

I weigh each charge for my C Sharps 1874 45/70 to get as close to same everytime I build one of those long range missiles , but volume is fine for muzzle loaders when hunting/ casual target . /Ed