For example , the . 50 - 90 Sharps has a . 50 - inch bore and used a nominal charge of 90.0 grains ( 5.83 g ) of black powder .
In older black powder cartridges , the second number typically refers to powder charge , in grains .
The . 50 - 90 Sharps has a . 50 - inch bore and used a nominal charge of 90.0 grains ( 5.83 g ) of black powder .
In older black powder cartridges , the second number typically refers to powder charge , in grains .