[Rupert]

Originally Posted by AlexanderHowl

While gyrocs sound cool, their performance in Ultratech leaves something to be desired. Weapons that use gyroc ammunition should be lighter and cheaper than conventional weapons, as they do not have to contain the stress of the detonation that accelerates conventional ammunition, and they should have a lower ST requirement and a lower recoil, since the user does not have to absorb the impulse from the detonation of conventional ammunition. In essence, they should probably have half the unloaded weight and base cost, with -2 to minimum ST and -2 to Rcl (minimum Rcl 1).

If you look at UT's gyrocs, they are very light (aside from the LSW, which is oddly heavy), do have low MinST levels, and they all have Rcl 1. The weapon stats are not the problem.

When it comes to ammunition though, pistols and SMGs should probably not be gyrocs (pistol and SMG rounds are just too short to justify the rocket engines), meaning that only longarms should be gyrocs. They should not have rifling, as spin is a negative for rockets, and should instead depend on a flat trajectory (no real change in Acc, just an explanation of the differences).

In the real world, gyrojet made pistols more than rifles, and they did spin - spinning is actually quite a common method of stabilising rockets in the real world. The reason gyrocs aren't great in pistols is the short engagements ranges of pistols.

15mm should probably be the minimum size, and 18.5mm and 25mm should also be available. Ammunition costs should probably by 8× for 15mm, 4x for 18.5mm, and 2× for 25mm to represent the expense of miniaturization. Viper rounds are +300% the base gyroc cost.

RL gyrocs were just over and just under 0.5" (12.7mm).

1/2D range would represent rocket speed. The rockets would use solid fuel to accelerate quickly and then use small fins to maintain their trajectory to Max range. In essence, the base damage represents the bullet slamming into the target.

If there's no sustainer motor, they don't have a flat trajectory unless they have actual flight surfaces (and that introduces rather a lot of drag).