[Mobhack]

If you want to know the game basics, please refer to the Game Guide, introduction section (the first paragraph of text in the GG).

A sabot (AKA APCR) rating of 56 is 56cm penetration at the muzzle. SP games deal in centimetres. Details of the technical stuff can be found in the Mobhack help file. Penetration formulae cannot be published due to the original agreement with SSI, however.

As to your other post - perhaps someone with an interest in scenario design may answer that at some time. But your scenario should be OK, barring any major re-jigging of the OOBS in question. You may have to use scenhack (if a CD owner) or delete and repurchase some things if that happened. Best to make a backup, on the off chance.

Cheers
Andy