777 FFFg weight (not volume !)

[Thatcher]

I have a powder flask with a nozzle that throws 17.8 grain weight of H777 FFFg.

Sadly the nozzle has no markings so I'm not sure what Blackpowder volume it is (as I have no blackpowder) - I'm guessing its going to be either 20/25/30.

Does anyone know the H777 weight / Blackpowder Volume calculation so I can get the blackpowder volume of my nozzle ?

I know its a bit long-winded but the flask/nozzle are very consistent (always throw to the same 0.1gr) so I want to use them if I can confirm the 'real' bp volume.

 

[sundance44s]

sundance44s

I don`t own a scale right now but i do see one in my near future ..

 

[gmatov]

Hodgon site, set your measure to the black powdewr volume, pour the same volume of 777, and you will have a hotter shot.

777 should be reduced by 15 % by volume for the same performance.

SO, 20 grain BP, 17 grain VOLUME 777, 30 grain BP, 25.5 or thereabouts 777.

You ain't gonna blow these things up. You might get a charge that kicks a little more thn you expect, but if you shoot cartridge, with any kinda velocity, you probably get more kick.

Cheers,

George