Loading Data For Muzzle Loading Firearms Using Swiss Black Powder

Single Shot Target 
CalibreProjectileProjectile
Weight
Powder
Charge
Powder
Grade
Range
.33″.325″ Patched RB51 grains8 – 12 grains#125 metres
.36″.355″ Patched RB67 grains10 – 12 grains#125 metres
.38″.375″ Patched RB80 grains10 – 14 grains#125 metres
.40″.395″ Patched RB93 grains12 – 14 grains#125 metres
.44″.430″ Patched RB119 grains14 – 18 grains#225 metres
.45″.44″ Patched RB128 grains16 – 20 grains#225 metres
.50″.490″ Patched RB176 grains20 – 25 grains#225 metres
MLAIC DisciplineKuchenreuter
Percussion Revolver
CalibreProjectileProjectile
Weight
Powder
Charge
Powder
Grade
Range
.31″.325″ RB51 grains8 – 12 grains#125 metres
.36″.375″ RB80 grains10 – 12 grains#125 metres
.44″.451″ RB137 grains15 – 22 grains#225 metres
.45″.457″ RB143 grains15 – 22 grains#225 metres
MLAIC DisciplineMariette / Colt

The above loads are those generally regarded as suitable for muzzle loading firearms in good condition. In certain types of firearms (eg smooth-bore flintlock pistols, flintlock rifles and muskets firing patched round ball) slightly heavier charges and/or finer grades of powder are frequently used to obtain better accuracy. Particular care should be used in such cases and it is advisable to start with lighter loads and make increases gradually. Proof service loads should never be exceeded. We accept no responsibility for the contents and accuracy of, or omissions from, the above table.