Been doing some ponderizing and note comparing, and it seems that if a person loads a bp cartridge with 35% of the blackpowder charge of 5744, things seem to work out pretty well.
For example the 45-70 with 500ish grain bullets 25 grs of 5744 gives nearly the same velocity as 65-70 grs of 2f.
Same goes with the 40-65, and others I've loaded with 5744 when I'm feeling to lazy to clean cartridge case. Just figure how many grains 35% of the blackpowder charge would be, load that many grains of 5744 , and go have a good shootin session.
