Hello again,
 
After my efforts with the rockets I checked the rocket pods with CT Striker Book 3 Design Sequence 9 (DS 9) and discovered that my calculated weight of 50 kg appears to be wrong.
 
CT Striker Book 3 DS 9 p. 22 B. Launchers 1.a. Launch Rails: “Launch rails must be mounted on vehicles. They are mounted on the vehicle exterior, on any face of the chassis or turret. Each launch rail weighs the same as one missile and costs Cr 50 per kilogram.”
 
Looking on CT: COACC p. 69 under the table header of Rocket Pods a TL 6 120 mm rocket mounted on a launch rail is 60 kg and costs Cr 100.
 
Based on DS 9 a TL 6 or TL 7 120 mm rocket has the weight that I calculated to be 50 kg versus MT: COACC’s weight of 60 kg. Then we have the MT: COACC cost of Cr 100 for the launch rail which does not match the DS 9 requirement of Cr 50 per kg. Personally, I agree with the cost shown in MT: COACC.
 
The 3, 7, and 19 round rocket pods are what I consider to be tube launchers. DS 9 has the following instructions:
 
CT Striker Book 3 DS 9 p. 22 B. Launchers 1.c. Tube launchers: “ A tube launcher may be either field-mounted or vehicle mounted. If vehicle mounted the launcher weighs twice as much as a missile; if field-mounted, it weighs 4 times as much as a missile. It costs Cr 100 per kg.”
 
The cost of the 3 round 120 mm rocket is incorrect using DS 9 regardless of which weight is used.
 
Reverse engineering the TL 7 80 mm 7 round rocket pod 60/2/7 = rounding to two places is 4.29 kg, a TL 7 80 mm 19  pod is 200/2/19 = 1.58 kg, and the TL 6 120 mm 3 round rocket pod is 200/2/3 or 33.33 kg.
 
I’m going to have to ponder the issue further before suggesting what to do and any feedback would be helpful.
 
Tom Rux