Loading Data For Muzzle Loading Firearms Using Swiss Black Powder

Flintlock Smoothbore
CalibreProjectileProjectile
Weight
Powder
Charge
Powder
Grade
Range
.44″.430″ Patched RB119 grains20 – 25 grains#225 metres
.50″.490″ Patched RB176 grains25 – 30 grains#225 metres
MLAIC DisciplineCominazzo
Flintlock Rifled
CalibreProjectileProjectile
Weight
Powder
Charge
Powder
Grade
Range
.44″.430″ Patched RB119 grains18 – 25 grains#225 metres
MLAIC Discipline
Military Smoothbore
CalibreProjectileProjectile
Weight
Powder
Charge
Powder
Grade
Range
.65″.640″ Patched RB393 grains20 – 25 grains#225 metres
.69″.680″ Patched RB472 grains20 – 25 grains#225 metres
MLAIC Discipline

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.