There are game reasons as well that I make my decision; chiefly I don't want to suddenly pull the rug out from under Moskurg after they've had a weapon for a while and made plans around it.
You do realize you're just pulling the rug from underneath us by providing the enemy with a reality breaking device, that hence can't be countered? I mean, how do you deal with something that shouldn't be able to penetrate your armor, but does anyway? (I have to grasp at straws to even come up with a possible solution)
I mean, all my plans were focused on reality staying the course.
Anyway, the problem is not that the enemy have a Recoilless Rifle. The problem is that they have a recoilless rifle that breaks our armor via AP.
Recoilless rifle are characterized by having extremely low muzzle velocities.
The M67, designed in the 60's had a muzzle velocity of 213 m/s.
For comparison,
The Becker type m2 20 mm autocannon has a muzzle velocity of 490 m/s, and later more advanced autocannons were higher.
The shells the Hippo/Rhino fire are 2.2 inch (56 mm). The shells fired by our autocannon are 20 mm. This means the surface area of our bullet is almost 8 times smaller.
Now, for neither shell the weight is given. However, for our autocannon round we have the dimensions. Which I can't really use, so I'm going to guess about 200 gram. Similarly, no units for the Recoilless rifle. However, a similarly sized US WW2 gun fired 2.5 kg shells.
This gives us a kinetic energy of 24010 Joules for each of our bullets, and a kinetic energy of 56711 Joules for the Recoilless Rifle. Despite using WW2 or even cold war numbers for the Recoilless rifle, it's clear it has only twice as much energy as the Autocannon, spread over an 8 times larger surface area.
The result of this is simple. If the Recoilless Rifle can penetrate, then our autocannon should perforate.
All in all, I merely require the answer to two questions :
Why does the Rhino penetrate?Why doesn't our autocannon?Now, we didn't need all this calculator stuff. It should have been patently obvious from the beginning, that AP rounds on a recoilless rifle shouldn't work. We said that like 40 times.
What's happening here is if we designed a B-17 to use as a fighter craft. It's a design being successfully utilized in the area where it's weakness should lie. See, the enemy successfully exploited our RPG's weakness by designing Slat armor. We can't do that, because the RR doesn't have a weakness.