Equipment: Fantasy Gyrocs

Equipment: Fantasy Gyrocs

GURPS Low-Tech has stats for TL3 rockets - highly inaccurate explosive weapons. The description says that the stats are for a typical rocket, implying variations in size and power. What if we were to miniaturize the rockets and launch them not from sticks (like on the picture in the book), but from a handheld matchlock launcher? Yeah, I'm going to make TL4 gyrocs.

Wyrm Gun
This weapon consists of a tube, a musket butt, and a matchlock mechanism designed to ignite miniature rockets. Rockets aren’t fired blind (p. B389) but are unguided. Rocket attacks are the ranged equivalent of Wild Swings (p. B388); they have -5 to hit and maximum effective skill 9, and can’t target specific hit locations.
It takes three seconds to reach full range and explode, traveling 50 yards in the first second, 150 in the next, and 250 in the third. As well as a crushing explosion, it does 1 point of burning damage over a two-yard radius and fills that radius with smoke. Smoke imposes a -5 to Vision and acts as a respiratory agent with a 10-second delay and a HT roll to resist. Causes coughing (p. B428) for the time spent in the smoke plus one minute times the margin of failure. Further, the burst is loud; anyone who takes crushing damage must make a HT-2 roll or suffer a Hearing penalty equal to his margin of failure for (20 - HT) minutes, minimum 1 minute. Failure by 10+, or critical failure, means deafness. Roll to recover from crippling injury, or suffer lasting or permanent Hard of Hearing or Deafness. Any failure on the initial HT roll also stuns the victim; roll vs. HT each turn to recover.
 
Wyrmling Gun
This weapon consists of a tube, a pistol grip, and a matchlock mechanism designed to ignite miniature rockets. Rockets aren’t fired blind (p. B389) but are unguided. Rocket attacks are the ranged equivalent of Wild Swings (p. B388); they have -5 to hit and maximum effective skill 9, and can’t target specific hit locations.
It takes three seconds to reach full range and explode, traveling 30 yards in the first second, 90 in the next, and 180 in the third. As well as a crushing explosion, it does 1 point of burning damage over the entire hex and fills that hex with smoke. Smoke imposes a -5 to Vision and acts as a respiratory agent with a 10-second delay and a HT roll to resist. Causes coughing (p. B428) for the time spent in the smoke plus one minute times the margin of failure. Further, the burst is loud; anyone who takes crushing damage must make a HT-1 roll or suffer a Hearing penalty equal to his margin of failure for (20 - HT) minutes, minimum 1 minute. Failure by 10+, or critical failure, means deafness. Roll to recover from crippling injury, or suffer lasting or permanent Hard of Hearing or Deafness. Any failure on the initial HT roll also stuns the victim; roll vs. HT each turn to recover.

GUNS (GYROC) (DX-4 or most other Guns-4)
4	Wyrm Gun	1d+2 cr ex	0	450	4/1	1	1(15)	$270	7†	-6	1	[1]
4	Wyrmling Gun	1d+1 cr ex	0	300	1.7/0.6	1	1(15)	$140	8	-4	1	[1]

[1] A rocket for a wyrmling gun costs $12. A rocket for a wyrm gun costs $18.