Thursday, 24 December 2015

Weapons: Moon-Darts

 
Moon-darts.
Moon-darts are a family of weapons developed on the moon and provide a cheaper alternative to more sophisticated weapons such as lasers and micro-missiles. The moon dart gun resembles a six to eight inch cylinder of between one and one and a half inches in diameter with either 19 or 37 openings in one end. Moon dart guns are commonly referred to as “pepperpots”. Such a cylinder is both magazine and firing unit and is used by attaching it to and assembly with a grip, stock and sighting system. Rounds are fired electrically and the firing units may be used on their own or in booby traps if a power source is available to fire them.
 
Guns (Pistol) (DX-4, or most other Guns at -2)
Name
Damage
Acc
Range
Weight
RoF
Shots
ST
Bulk
Recoil
Notes
Moon-dart Pistol
3d (2) pi-
2
250/2,800
1.5/1
3
19(4)
6
-2
2
(1)
 
3d (2) pi-
2
250/2,800
2/1.5
3
37(4)
6
-2
2
(1)
 
Guns (Rifle) (DX-4, or most other Guns at -2)
Weapon
Damage
Acc
Range
Weight
RoF
Shots
ST
Bulk
Rcl
LC
Notes
Moon-dart Rifle
3d (2) pi-
5
2,700/3,300
5.5/1
3
19(4)
6
-4
2
 
(1)
 
 
5
2,700/3,300
6/1.5
3
37(4)
6†
-4
1
 
(1)
 
(1)   Ranges given are for the weapon used in lunar surface conditions:- a vacuum atmosphere and 0.17g.
The moon-darts themselves resemble steel nails of about 3.5mm diameter. A polymer ring of about 5mm diameter provides obturation and engages the rifling to spin-stabilize the projectile. At the rear of the projectile is what appears to be an aluminium cartridge case. This contains a propellant derived from rocket fuel, protecting it from extremes of temperature and related effects. The propellant charge has aspects of both a rocket and a conventional gun. Most of the gases are vented against the breech face but some also fill the barrel space behind the obturation ring.
Pepperpots are not true recoilless weapons but their light projectiles keep recoil well within human tolerances, even at one-sixth lunar gravity. The projectile is launched at a velocity of 1,000 yards/second and in the vacuum and gravity of the lunar surface it has lost little of this velocity on impact. The dart has very little stopping power but its high penetration makes it a deadly weapon against pressurized targets such as moon-suits. Under the weak lunar gravity the  moon-dart follows a relatively flat trajectory to more than 2,700 yards. The curvature of the moon gives a surface line of sight of between 2,460 and 2,820 yards so moon-darts are very effective weapons. Designed with simplicity in mind moon-darts do not have warheads and guidance systems would be extremely rare and likely to be custom made.
Moon-darts are not designed to be fired in an atmosphere and consequently have a very poor aerodynamic shape. Treat range and ½ range in a normal Earth atmosphere as a thousand times actual distance. Under such conditions Acc=0 and shooting skill is at a penalty of at least -1.
 
 
 

Weapons: 15mm and Point Five-oh Recoilless.

 
15mm Recoilless Rifle and Pistol
15mm Recoilless Rifle: A rifle-like weapon which fires 15mm projectiles and counters recoil by venting cold gas out the back of the weapon or via vents in the side of the barrel. It is designed to use the same warheads as 15mm micro-missiles but mounted on a more compact rocket motor to facilitate feed through a magazine.
 
15mm Recoilless weapons are more commonly encountered off-planet since it is more suitable for in zero-G combat than conventional caseless weapons. Ammunition is easily produced by minifac so it is a popular weapon with space-dwelling isolationists.
 
Available with the same warheads as 15mm micro-missiles but using 3d+1 pi++ for kinetic damage rather than 6d. A SAPHE projectile with Dmg 3d pi++ and a 1d-2 [1d-2] cr ex follow-up is also available.
 
Firing a round is a soft hissing noise unlike a normal gunshot. Use the 4-yard line on the Hearing Distance Table, p. HT(4e)158. Obviously, firing in space makes no noise!
 
Acceleration is slower than for micro-missiles so make their piercing damage by 1d+1 at 1 or 2 yards and by 2d+1 at 3 to 10 yards.
 
Guns (Rifle) (DX-4, or most other Guns at -2)

Weapon
Damage
Acc
Range
Weight
Rof
Shots
ST
Bulk
Rcl
Cost
Recoilless rifle 15mm
3d+1 pi++
4
200/1900
8.5/2
3
10
7
-4
1
$790
SAPHE
linked
3d pi++
1d-2 cr ex [1d-2]
 
 
 
 
 
 
 
 
 
HEMP
linked
5d x2 imp (5)
1d cr ex [1d-1]
 
 
 
 
 
 
 
 
 
SEFOP
4d+4 (2) imp
 
 
 
 
 
 
 
 
 

            Explosive damage is also incendiary.

            Firing a 15mm recoilless round puts very little stress on the weapon. A recoilless rifle  made from superior lightweight material and weighing 4.25lb has the same performance but costs 50% more ($1,185)..
 
A large but lightweight pistol using the same rounds is also available. The magazine well is ahead of the trigger and also accepts the 10 round recoilless rifle magazines. Spacers sometimes use these weapons to project lines and grapples. Under Earth conditions it can fire a grapple, harpoon, splat piton etc with a light line to 20 yards. Half this distance for a climbing rope.
 
The 15mm Holdout recoilless is a single round loaded in a tube that can be concealed up a sleeve. Lacking a vent for the exhaust it is not truly recoilless and may push the firer back if fired in microgravity.
 
Guns (Pistol) (DX-4, or most other Guns at -2)

Weapon
Damage
Acc
Range
Weight
Rof
Shots
ST
Bulk
Rcl
Recoilless pistol 15mm
3d+1 pi++
2
200/1900
2/1.2
3
6+1
6
-2
1
Holdout Recoilless
3d+1 pi++
0
200/1900
0.25/0.1
1
1
6
-1
1
 
Point Five-Oh Recoilless.
            This round is effectively the 15mm Recoilless round reduced slightly in size in accordance with US laws against explosive rounds of greater than 13mm calibre. This redesign gives the round a slight increase in velocity so in game terms it has the same performance as the 15mm round but cannot legally use rounds other than  non-explosive ammunition.