I know you are very busy so I have done as much research with all the numbers in and checked double checked everything so its right and put in references so anyone can check real quick.
Thats tricky about the ranges Ill try to learn it. When I looked in mobhack about it like you said I found some mysteries which I solved for you. Here they are. I got to say that looking up all this was like kicking the hornets nest, every time I thought I had nearly worked it out it just got more tricky.
British weapon 109 4.6in rocket isnt real, how tricky is that. I was looking for a red herring. So I looked for what rocket the units that fired that rocket really had.
British Units are.
101 LCT(R).
176 Assault Pioneer.
567 Land Mattress.
654 Assault Pioneer.
I looked and the internet says LCT(R)s always fired the naval 5in shell on a RP3 rocket. Same as the land mattress fired. The 5in naval shell, British weapon 188 gets HE Kill of 15, but the 5in naval shell on a Rocket gets a HE kill of 17. They both have 7 lb of explosive.
The Assault Pioneers really fired RP3 rocket with either a 21 lb warhead, 4 lb of tnt or a 60 lb warhead, 16.75 lb tnt. But with the fins cut down so they fire them very inaccurate and the useful range was really really short.
The Indian, Canadian and Australain/NZ LC/T(R), unit 101 are also firing the 4.6in Rocket really they fired the 5in rocket.
And just when I thought I was finished. Yes you are right the US and maybe the USMC used LCT(R). Your US LCT(R)s fire the US 4.5in rocket, but really the US LCT(R)s still fired the British 5in rocket. US LCI and LSM are the ones that fired the us 4.5in. And then it gets worse, The US 109 4.5in rocket is 3 different rockets Its the M8 4.5in, M16 4.5in, but mostly its meant to be the 4.5in Beach Barrage Rocket. Which means US Weapon 109 has some wrong numbers.
109 4.5in Beach Barrage Rocket. range is now 5200m really was 1100 yards.
109 4.5in Beach Barrage Rocket. HE Kill of 17 is to high with only 4.3 lb of explosive.
109 4.5in Beach Barrage Rocket. warhead size is 5, USMC 109 4.5in Beach Barrage Rocket warhead size is 4.
173 M8 4.5in Rocket. HE Kill of 19 is to high with only 4.3 lb of explosive.
M16 rocket. range is .
M16 rocket. has 4.3 lb explosive warhead.
M16 rocket. range is 4800m for USA 143 honeycombe and USMC 143 T66 RL.
M16 rocket. is more accurate with spin stabilisation.
I looked at who in USA fired the 109 rocket and here the ones that dont fire the beach barrage rocket.
023 T34 Calliope RL. fires the 4.5in Beach Barrage Rocket (109) really fires 173 M8 4.5in Rocket.
061 Assault Eng. fires the 4.5in Beach Barrage Rocket (109) really fires 173 M8 4.5in Rocket.
083 LCT(R). fires the 4.5in Beach Barrage Rocket (109) really fires British 5in in rocket.
143 Honeycomb RL. fires the 4.5in Beach Barrage Rocket (109) really fires the M16 rocket.
143 Honeycomb RL. available from is 11of44 really was 4of45.
and then in USMC these dont fire the beach barrage rocket.
013 RL T34 Calliope. fires the 4.5in Beach Barrage Rocket (109) really fires 173 M8 4.5in Rocket.
048 Assault Eng. fires the 4.5in Beach Barrage Rocket (109) really fires 173 M8 4.5in Rocket.
076 LCT(R). fires the 4.5in Beach Barrage Rocket (109) really fires British 5 in rocket.
143 T66 RL. fires the 4.5in Beach Barrage Rocket (109) really fires the M16 rocket.
143 T66 RL. available from is 11of44 really was 4of45.
Im hurting that was some effort.
Im still working on the mystery of the RP3 British weapon 174 I cant match it to any rockets on the internet anyone know about what it is meant to be?
How about all that for some hot detective work.
Here is references I checked if you like I can give all the exact relevant bits out of each one as well.
for 5in rocket warhead
https://en.wikipedia.org/wiki/Landin...t_Tank_(Rocket)
for 5in rocket
https://en.wikipedia.org/wiki/RP-3
https://en.wikipedia.org/wiki/Mattress_(rocket)
https://en.wikipedia.org/wiki/Unrotated_Projectile
for looking at US using British LCT(R)
https://www.combinedops.com/US%20LAN...T%20ROCKET.htm
for looking up 4.5in Beach Barrage Rocket and who fired them
https://www.wikiwand.com/en/4.5-Inch...Barrage_Rocket
https://laststandonzombieisland.com/tag/barrage-rocket/
https://www.usni.org/magazines/naval...e/rocket-ships
and you can look up, double triple check everything, but ive already done it, here
https://www.bulletpicker.com/index.html