National Safety Rules and Procedures
for Shooting Muzzleloading Artillery, as adapted by the
American Artillery Association
These rules adapted by the American Artillery
Association, March, 2000, from rules which were compiled by
The Artilleryman magazine and reflect a consensus of safety procedures
developed from historical records and practical experience of many present
shooting organizations. They were written and edited by Matthew C. Switlik,
author of The Complete Cannonneer; George McDonald III, Clark's
Battery, N-SSA; Bernard Kurdt, 120th NYVI, N-SSA, Union and Confederate
Volunteers, and American Artillery Association; and C.Peter Jorgenson,
Artilleryman editor and publisher. The original
version of the rules is now available on the Civil War News website http://188.8.131.52/artillerysaftey.htm.
Copies are available from The Artilleryman, 234 Monarch Hill Rd.,
Tunbridge, VT 05077
Note: If you are studying for the Commonwealth Of
Massachusetts Certificate of Competency for Mortar/Cannon, 527 CMR does
not agree with the National Rules in more than one place. My suggestion:
study 527 CMR, but you will also need to know the Ten
Step Standard Procedure (see below). For more information,
contact the Office of the State Fire Marshal (978) 567-3700.
This information presented by the American Artillery Association.
For comments to the AAA, email CannonADE@email.msn.com.
Comments on the page to firstname.lastname@example.org
The following safe shooting procedure presumes the crew
is firing projectiles with a muzzleloading artillery piece
made (or altered) to modern safety standards. (If firing blanks skip Step
VII and see Safety Rule 9.) The bore should be lined with seamless steel
tubing with a minimum 3/8-inch wall thickness and a yield strength of 85,000
psi or greater. The breechplug should be threaded and pinned; welded and
pinned breechplugs can be equally strong but require expert installation
by competent manufacturers. Sand cored bores are not recommended for shooting.
The vent should be drilled in a threaded copper bolt similar to original
cannon vent liners of the 1840-1865 period) in order to provide an unbroken
passage through the casting and the liner, into the bore.
Establish a 50-foot wide safety zone between the spectators
and the gun. No one is to be forward of the muzzle at any time. Only Association
members are to be in this zone unless escorted by an Association member. All pieces shall be
brought into battery so that muzzles are in alignment. No muzzle shall be forward of
others regardless of the size of the piece. Axel hubs of pieces shall be at
least five feet from one another, allowing for free movement around each piece.
Changes will be determined by the Safety Officer in charge. No person
under the age of 16 shall handle powder. The Safety Officer shall wear some
type of distinguishing clothing so that competitors may easily identify him or her.
Two men minimum. Ammunition box with self-closing lid restricted
to opening at no greater than 80-degree angle. Vent brush or cleaning device.
Vent pick. Thumbstall. Heavy welders or fireproof gloves. Haversack
for use as ammunition pass box and another for priming materials. Straight or tapered single piece rammer
with no head.
Wet sponge. Dry Sponge. Worm. Water bucket. Primers. Priming power device
(if used). Linstock and slowmatch or lanyard. Gimlet. Individual
safety containers for powder charges.
Ten Step Standard Procedure
I Clean the Vent
Clean the vent as the first step in each cleaning, loading and
firing sequence. Proceed as follows:
- Use a .22 caliber or appropriately sized bronze cleaning brush on a suitable
rod and brush the entire vent twice.
- If no brush is available, the alternative method is to run the priming
pick or gimlet up and down the vent twice, twisting to make sure the vent
is completely free of powder bag remnants.
II Stop the Vent
Seal the vent with thumb pressure during the entire cleaning
and loading process. This means no air should escape the vent from the time
the worm enters the muzzle until the rammer is removed after the projectile
has been seated. Use a leather thumbstall or heavy glove to protect your
thumb to protect your thumb and make a tight seal.
III Worm the Bore
Using a tool with two sharp steel points which replicates
an original cannon cleaning worm, worm the bore until all debris is removed. Turn
the worm at the breech to pick up any powder container
remnants and to loosen any powder residue. The worm should fit closely so
the points will pick up debris easily.
IV Wet Sponge the Bore
- Sponge with a wet (but not sopping) tight-fitting sponge
with a head of lambswool or wool carpeting over a wooden cylinder affixed
to a shaft at least one foot longer than the bore. The end of the sponge
head should conform to the shape of the breechplug.
- Seat the sponge against the breech with hand pressure and give two full
rotations of the shaft. Withdraw the sponge half-length, twist, then reseat
against the breech and give another two full rotations.
- Remove the sponge. If any powder container remnants or unburned powder
comes out with the sponge, repeat the entire process, starting with Step
V Dry Sponge the Bore
After wet sponging, the same procedure is used with the
dry sponge. The dry sponge is cleaned and dried off periodically with an
absorbent towel-type rag. (The purpose of the dry sponge is to remove excess
moisture from the bore; if water is left in the bore it may cause incomplete
burning of the next powder charge, leaving dangerously glowing residue.)
VI Load Powder
- Use a crooked shaft U-shaped rammer if available. If
not, use a plain wooden pole without a head, or with a smoothly tapered
head (made like a U.S. Model 1841 "Mississippi Rifle" ramrod),
so that it might force the hand open should premature ignition occur.
- Mark the rammer in advance in two places, one to show the amount of shaft
which should be sticking out the muzzle when the charge is seated and the
other to show when the projectile is seated.
- The ammunition chest should be located 25 feet behind the gun and 25
feet forward of the spectator line.
Powder charges should be prepared in advance as specified in Safety Rules
1 and 2 below, wrapped in heavy-duty aluminum foil.
- Open the chest only long enough to remove one charge in its safety container.
(Do not open chest following warning that a gun
is about to fire until 10 seconds after that gun has fired to prevent hot vent
debris from falling into the chest.)
- Carry charge to gun in fireproof safety container. Do not proceed to
load unless 3 minutes has elapsed since the gun was last fired. Check your watch.
- Open safety container. Remove foil-wrapped charge and place it in the
muzzle with one hand while wearing heavy leather gloves (see above).
- Wearing heavy gloves, stand to the side of barrel with as much of your
body as possible behind the plane of the muzzle. Grasp rammer underhand,
with one hand, thumb to the side. Seat the charge lightly with smooth
strokes. Do not pound the rammer against the charge.
- Immediately upon feeling the charge reach the breech, drop your hand
away, releasing the rammer. After 10 seconds and after ascertaining the
charge is fully home (according to the rammer marks) remove the rammer,
one hand, underhand, thumb to the side. This may require grasping
and releasing the shaft a few times. Never two hands on the rammer.
VII Load Projectile
- The projectile loading procedure is the same as that
for powder. The rammer is operated with short strokes, one hand, underhand,
thumb to the side, until the mark shows the projectile has been fully
- No projectile should fit the bore so tightly as to be difficult to seat.
All projectiles should pass wasily through a bore sized ring gauge.
- Be sure the projectile is seated fully against the powder charge.
- Upon completion of loading, person ramming shall indicate to the person holding
the vent that the gun is fully loaded. The vent
may then be released.
VIII Pick the Charge
- To insure ignition, pick the powder charge wrapper through
the vent with a pick or gimlet held by the shaft, between glove protected
- The pick shall be constructedof a non-sparking material.
- Priming the vent depends on the type of ignition used.
Typical systems are: linstock and priming powder, fuse, priming quills,
friction primers, .22 blank, and percussion cap.
- If priming powder is used, prime from an open topped container constructed
to hold just enough 4F or 3F powder to fill the vent. The priming device
should have a handle so that the hand is never over the vent when pouring
the loose powder. Priming is not done directly from powder horns or flasks.
- Hot debris is apt to be blown out the vent on discharge. Crew members
should wear hats for protection, spectators kept at a safe distance, and
all ammunition chests closed whenever any gun is firing.
X Fire the Gun
- The person designated to ignite the charge calls out "Ready to fire" in a loud
voice to alert other crews on the line that a gun is about to fire and
to notify the gun captain that the piece is primed. At this call, any open
ammunition chests are immediately closed. The gun captain makes a quick
visual inspection of the range forward of the muzzle to make sure no one
is in danger and then commands "Fire".
The time between "Ready to Fire" and "Fire" should be
at least five seconds. The primer is then ignited.
- Priming powder, fuse and priming quills are ignited with a linstock which
is long enough to allow the cannoneer to stand outside the wheels. The linstock
holds the burning slow match made of cotton rope impregnated with potassium
nitrate or lead acetate to make it burn.
- If a lanyard is used to ignite friction primers, or to activate a lock using
percussion caps or blank cartridge, it should be long enough to allow the
cannoneer to stand outside the wheels and out of the way of recoil.
If the primer ignites, but the gun fails to fire:
- Command: "Do not advance, the primer has failed." Check your watch.
Wait 3 minutes.
- When 3 minutes has elapsed, step inside wheel from the front of the axle
so you will be out of recoil path should the gun discharge unexpectedly.
- Do not get in front of the muzzle at any time. If gun barrel is under
5 feet this position might put you in danger
of muzzle flash so you will have to work from behind the axle. Use good
judgment. Estimate recoil distance and stand well back from the axle.
- Reset the projectile with a lambs crook provided by the Safety Officer. Do not
use straight rammer.
- Wearing gloves, use a gimlet to clear the vent. Grasp by shaft only.
Keep head away from vent. When vent is clear, reprime and fire.
- If three attempts fail to fire the gun, use a CO2 fire extinguisher (with
horn removed) to blow down vent and force powder (and projectile) from the
barrel. If CO2 is unavailable, flood bore and vent with water and worm after
Ten Basic Safety Regulations
- Powder charges should not exceed 2 oz. of Fg or 3 oz. FFA or Cannon Grade
Goex powder per inch of bore diameter. No excessive charges. Use black powder only.
- Prepare powder charges in advance using heavy duty aluminum foil. Baggies
may be used inside the foil, taking care not to allow excess air in the baggies and
removing excess plastic where unnecessary.
- All crew members should wear ear protection devices.No person
under the age of 16 is to handle powder. It is strongly recommended that all persons, especially
children under the age of 11, wear protective gloves while handling lead.
- No one should cross in front of the muzzle at any time
during the cleaning, loading or firing procedure.
- The interior of the ammunition chest shall be lined with a non-
sparking material and the box itself shall be stoutly constructed of wood or
metal. A copy of these safety rules should be posted inside the ammunition chest.
- Firing shall be at approved targets only.
- No drinking of alcoholic beverages at any time on the line.
Any consumption of alcoholic beverages will disqualify a member from shooting
for the duration of the day. No smoking at any time within the safety zone.
- Projectiles shall be constructed so that they easily pass through
a sizing guage with finger or thumb pressure only. (The sizing guage to
be a length at least 1.5 times the length of the projectile and in inner
diameter no greater than bore size when the barrel was new.)
- No wadding shall be used at any time. This includes firing blanks.
- All new guns shall be inspected and approved by the Association.
Inspect your gun tube regularly for signs of stress. Existing guns shall be
Make sure each crew member has knowledge
of procedures and safety rules. Walk. Do not run. Work at a smooth, steady pace.
If you are in doubt about ANY part of these firing or safety procedures,
ASK THE RANGE OFFICER OR SAFETY OFFICER.
Anyone observed breaking any of the above rules will be subject to the removal
of their piece from competition for the duration of the event and any score eliminated.
for more on shooting muzzleloading
for a look at the history ..
Suggested Sources for Further Information
The More Complete Cannoneer; M.C. Switlik; 3rd Edition, 1990;
Museum and Collector Specilaties Company
Field Artillery Weapons of the Civil War; Hazlett, Olmstead and Parks;
University of Delaware Press