Step 1: Start with large sheet of heavy duty aluminum foil. Fold sheet to make a rectangle large enough to wrap 3 times (6 layers) around your cartridge form. (A cartridge form can be made from tubing or a cylinder with an O.D. near the I.D. of the bore)

Step 2: Fold and roll foil around the form. Remember to keep an excess of foil at the bottom of the tube. This will be folded over and tamped to make a thick seal for the bottom end of the blank cartridge.
 
Step 3: After foil has been tamped and inspected, remove the foil cartridge from the form. The powder charge may now be placed in the cartridge.

Step 4: Fold the foil in on itself to seal the top of the cartridge. The foil should be formed to make an extremely good seal. The end can be color coded to mark type and load of the blank cartridge.

This is information is for blank rounds only! Many other factors must be addressed in the construction of blank rounds. Do not attempt making blank or live rounds without proper instruction and supervision.

Never store Primers and Rounds in the same area.

Type g or sporting powder - Cannon, Fg & FFg are suitable for blanks. Cannon and Fg may be used to fire projectiles. The potential for extremely high pressures is too great with FFFg or FFFFg for blanks or projectiles. Use of FFg is limited and requires reduced loads.

Type A Blasting Powder - (3FA-lFA) Can be used in most blank rounds. 3FA and 2FA are similar to cannon grade powder and 1FA is much coarser and has been used for projectiles fired in bores larger than 4 inches. Lifting powder and type A powder is often used as cannon grade powder for making blank rounds.

Basic blank load for Fg and other cannon grade powder is 3.oz (1312.5 gr.) per inch of bore. For most blank rounds, this is a good starting point. With bores less than 2.5” the amount should be adjusted down and for bores larger than 3.75” this may be increased to the point that rounds do not butterfly down the bore. This is for blank rounds only and many other factors need to be addressed for projectiles.

Pyrodex  -Pyrodex is limited to very few uses with projectiles and should never be used for blanks.This is not a suitable powder for artillery! Do not experiment!

Type B Blasting Powder -Has very unpredictable results when used in Cannon. (Should never be used)

Note: There are 7000 gr. Per pound of powder (all types Cannon, Fg, FFg, FFFg or FFFFg) Granule size does vary, cannon having the largest and FFFFg the smallest, but all have 7000 gr. (weight) per pound.

1 ounce = 437.5  gr.
1 grain =  0.002285714 ounces
1 pound = 7000 gr.

This is information is for blank rounds only ! Many other factors must be addressed for firing projectiles. Do not attempt making blank or live rounds without proper instruction and supervision. Never store Primers, Powder or Rounds in the same area.