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Tubular Ammunition Standards

Tubular Ammunition

Ammunition must be constructed as described in the CONSTRUCTION STANDARDS section of this handbook.

Here are Step-by-step illustrated instructions for constructing tubular ammunition.

Combat archery arrows and bolts must be made out of 100 PSI OR 125 PSI irrigation/water pipe or tubing with a 1 inch ID or 1 ¼ inch OD. (See Sil-o-Flex/equivalent tubing section in this Handbook for details). 

Tubular shafts are NOT permitted to have any slits or holes.  A nock is NOT considered a slit.

The tail end may have a nock cut in up to ½ inch in depth.  (A nock is a straight or v-shaped cut into the end of an arrow to hold the string in place for firing.) 

The end of the shaft must be open to permit inspection. 

Nothing may be inserted into the tube except a rubber stopper tip.  (Nocks made of wood/tubing/etc. are prohibited.)  The back side of the tip must be visible. 

Tips must be size 6.5 rubber stoppers or modified Baldar Blunts.  (~Soc) 

Rubber stoppers must have a 1/4 or 3/8 inch hole through the center.

Any classic style of Baldar Blunt can be used, whether 1 or 2 piece mold or designed for fiberglass or wood.  It is modified by cutting the support fins away from the collar.  (~Soc)

The resilient padding on the tips must be at least ½ inch (and maximum 1 ¼ inch) thick after taping.  (~Soc)   

Rubber Stopper heads require side wraps; Baldar Blunt heads do not.  (~Soc) 

Tips and padding must be secured with filament-reinforced strapping tape.  (See the CONSTRUCTION STANDARDS section for details.) 

After all padding has been secured, the heads must be completely covered with red duct tape.

After taping, the heads must be at least 1 ½ inches in diameter.  (~Soc) 

Tubular ammunition may have fletches made of duct tape.  They must be securely attached and can not project more than ½ inch from the shaft.  No other materials can be used in fletches. 

Sil-o-flex/Equivalent Tubing

Sil-O-Flex/equivalent tubing is made from Polyethylene (PE) plastics with specific chemical formulas and manufacturing standards.  Industry standards require marking this information at frequent intervals, so at least some ammunition will probably have the relevant data marked. 

100 PSI tubing must be PE 3408, PE 3608, or PE 3710. 

125 PSI tubing must be PE 4710. 

Tubing size must be 1” ID (inside diameter) or 1¼“ OD (outside diameter).  (~Soc) 

1” ID tubing must be ASTM D2239. 1¼“ OD tubing must be ASTM D2737.