I am looking for the most accuracy and want to weigh out a charge of 120 grains by volume for the triple 7 2f....does anyone know the conversion factor? I came to about 85 grains actual weight..????? Am I close?
In my brass powder measure, 85 grains weight T-7 FFG is equal to 109 grains volume. 95 GW = 122 GV.
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Things I've Learned: (1) It's not possible to please everyone, but quite easy to piss everyone off. (2) If you love animals as I do, then you're not a vegetarian. (3) There's no need to act stupid, even if you're very good at it. (4) If you eat right and exercise, don't smoke or drink, you're going to die anyway.
Your results also depend a great deal on the volume measure you are using. They are not all that consistent.
A bunch of us weighed 100 grains by volume of FFg T7 and got results that were all very close to 80 grains weight. That would indicate .8 times volume ~= scale weight.
.8 x 120 yields ~96 grains by measured weight. Several others have indicated getting results nearer to the 85 grains that you got for 120 grains volume. I don't see how they or you would get that result unless your powder has a considerably different density than the samples many of used.
But I would advise you to use your own equipment and your own results.
One thing that some are not looking at is each bottle can be a little bit different, each lot is different, and as you progress down through the bottle the weight can change depending on how that bottle was stored or exposed to the elements.
Just the humidity of your location can change the whole weight thing.... Just to many varibles... as I have said before.
Theory has often said the name 777 comes the weight of a hundred grains and it might be as it comes off Hodg humidity controlled manufacturing line...
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I agree there are a bunch of variables that affect volume to weight comparisons - the measure, how you fill it, humidity, powder lots, etc.
So, I just don't worry about it. I made my own chart as a "general" guide to give me an idea of what the volume equivalents are likely to be for whatever weighed charge I'm using. I know it's only a close approximation. Doesn't make any difference. What's important is that when I make up a batch of weighed charges, they will all be the same.
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My wife says I'm totally nuts, but I think I'm Semisane.
Things I've Learned: (1) It's not possible to please everyone, but quite easy to piss everyone off. (2) If you love animals as I do, then you're not a vegetarian. (3) There's no need to act stupid, even if you're very good at it. (4) If you eat right and exercise, don't smoke or drink, you're going to die anyway.
And it really doesn't matter much so long as you stay considerably distant from any maximum loads. The only difficulty is trying to communicate EXACTLY what load you are shooting to someone else.
SL, Understand about density changes, lot numbers, and such - that was why I suggested always using your own results when setting your scale. I need to go weigh some BM3.
so is 95 grains weighted on my scale safe and close to the max load for 777?
Thanks
After you have it weighed out, just for kicks, dump it back into a powder measure and see what volume it produces. If it is 120 grains or under, you should be fine to shoot it. If your rifle is made for such loads. Some rifles only recommend 100 grain of loose powder, like Hodgdons does. Know what your rifle manufacturer's recommendations are, stay within them guidelines and you should (I hope) be fine.
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Weighing 777 ?
