The same Volume of 777 will weigh less than the equivalent Volume of BP - thats why you MUST measure out 777 by Volume !
Chart here http://www.curtrich.com/BPConversionSheet.htm
Cheers
Roy
.
The same Volume of 777 will weigh less than the equivalent Volume of BP - thats why you MUST measure out 777 by Volume !
Chart here http://www.curtrich.com/BPConversionSheet.htm
Cheers
Roy
.
Think of it this way, if you were to fill your 20gr(vol) spout with fine lead shot do you think it would weigh the same as the same volume of BP? of course it wouldn't.
All powders have a different weight per volume, this includes some BP. The chart Roy linked to shows the comparisons, its not perfect but it helps.
The guns are not fussy about slightly higher or lower loads, but variation is not good if you are trying to improve accuracy.
For my own loads I use the powder dispenser I use for my cartridge reloading, volmetricaly dispensed (17.5gr by vol) but then I double check and weigh each load.
“If a cricketer, for instance, suddenly decided to go into a school and batter a lot of people to death with a cricket bat, which he could do very easily, I mean, are you going to ban cricket bats?” :- Prince Philip said after Dunblane
As Smokeless says - it is consistency that you need to work towards (having found a load that approximately suits) . and I also use a powder dispenser and I use vials .....
I'm not as 'accurate' as Smokeless - about each 10th one gets a check - but I do give the vials a 'tap' & eyeball' that they are all the same level of powder..
Cheers
Roy
.
Thanks that makes things alot clearer especially with the chart.
If I was to weigh my charges out on the scales how many grains of 777 would you recommend for a Remington 1858 ?
You could be anywhere between 9.3 and 15.6 by weight, thats 15 to 25 by volume.
Mine weigh in at 10.7
Use the 777 adjusted column on the chart. And check if your range has a lower limit, my range has set 15gr vol as minimum to make sure the balls penetrate the linatex curtain, we used to get the odd bounce back.
Last edited by Smokeless Coal; 23-01-2012 at 01:46 PM.
“If a cricketer, for instance, suddenly decided to go into a school and batter a lot of people to death with a cricket bat, which he could do very easily, I mean, are you going to ban cricket bats?” :- Prince Philip said after Dunblane