gadrin wrote:I'm using the Iron Heart 30mm Ramjet Auto-Cannon from Rifts Mercenaries p112.
Using standard it does 3D6/2D6x10 for single/burst
Using Depleted Uranium does ~3D6+3/2D6x10+17 (25% more according to Triax book;same for Uranium)
What would 30mm silver do to supernatch creatures/demons, etc ?
A standard ramjet round multiplies the damage by (very) roughly 5x, taking a 6d6 SDC weapon to a 3d6x10 weapon.
Going by that, the standard damage for non-ram-jet rounds with that auto-cannon would be roughly 1/5 of the listed damage.
3d6MD/5 ~ 2d4x10+10 HP per shot vs. vampires.
The 2d6x10 MD damage for 20 rounds.
2d6x10 MD/3d6 MD ~ 6.666
(2d4x10+10)x6.666 ~ 13.333d4+66.666 ~ 1d6x100 HP damage to vampires for a burst of 20 rounds.
Range would be reduced by 1/2.
Ammunition cost would be about 3x normal, but I don't see normal listed.
A 9mm ramjet round costs 5-10 credits each, and silver rounds cost about 3 credits each, meaning that ramjet rounds cost roughly 2-3x more than silver rounds.
Since a 9mm Ramjet round costs 5-10 credits, and a 14.5mm ramjet round costs 10-15 credits each, I'd say that a 30mm ramjet would cost about 15-20 mm each.
Put that at the high-end of the scale (slightly over, really), because of the limited demand of such rounds, so let's out to about 21 credits per round for a 30mm ramjet round.
Which would make it about 7 credits for a single 30mm silver round, and 140 credits per burst of 20.