Gun Stats says it can do cannon. In fact, they give us the detailed process of making the 120mm M256 firing the M829A3 APFSDSDU round.
So I decided to see if the numbers I pulled out of my ass for Twilight 2000 were even close.
The initial APFSDSDU round did 6dx19(2) pi++ inc out to 4,800/16,600. This round didn't last long in testing and never got an XM designation.
XM885 (Delta 3) APFSDSDU round did 6dx25(2) pi++ inc out to 4,800/16,600.
XM885 (Delta 6) APFSDSDU round did 6dx28(2) pi++ inc out to 4,800/16,600. Delta 6 might have become M885A1 if development had continued.
XM884 HE-AB did 6dx11(0.5) pi++, follow-up 6dx3 [4d-1] cr ex out to 2,400/8,300.
Gun Stats says:
XM885 (Delta 3) does 6dx21(2) pi+ inc out to 9,340/30,600
XM885 (Delta 6) does 6dx25(2) pi+ inc out to 9,340/30,600
XM884 does 6dx12(0.5) pi+, linked 6dx3 [4d-1] cr ex out to 4,670/15,300.
I get more range, regardless; but less damage for the KE rounds. I'm giddy how close my original XM884 round was!
The delta 6 is calculated as a "long rod" round, delta 3 was not, but there's some speculation that it was also heavier than the delta 3, which could up the damage.
If delta 3 was always a long rod and 6 is heavier... But I don't think that 2.91kg is realistic.
Acc changed from 8 to 5+4. ST changed from 70M to 62M. Rcl changed from 10 to 4.
I think I can live with these numbers.
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