So you just hijacked a ship from the emperium in the calixes sector. You find a sweet set of Power armour and take it for you very own.  Do you roll on the table to see what "customization" it has?  What about if you start with power armour, do you roll on the table?

I'm just curious  because it doesn't seem to fit if you raid a loyalist ship in the calixis sector and end up with armor that has "Remnents of Mutation".

I suppose it could be justified in some way.  Is rolling on the table optional?

Personally, I'd say you roll on the table for armor likely to have said custom bitz. If it's straight out of the box armor from a loyalist, it's not gonna have chain wraps or mutant adaptations or a carefully tweaked power source. Thus, no roll, though if a player loots it, I'd probably allow them a roll on said table if they intend to keep it and they go through some downtime where they can either fiddle with it themselves or hurl it in the direction of someone who can.

 I think the table in BC is for old legion armour, pre Mk. VII stuff that has been worn by one or more chaos space marine for some (warp variable) time.

 Whether to apply the table to loyalist astartes Mk. VII armour is your call, if you like the table stick with it and ignore the obviously inappropriate results or replace them.

Maybe Deathwatch has some features for this kind of thing?  I don't have that line but I suspect if it is anywhere it'd be in those books.

The Deathwatch core book has VII armour and an armour history table. The Rites of Battle books adds rules for armours from II-VIII and three more armour history tables. Some of the results would be fine for a renegade marine (to do with battle damage and enhanced systems), others are tied to loyalty and honour and not so appropriate.

Decessor said:

I think we have a winner.

Since we're talking about power armour subsystems, I'd like to pose a question:

What percentage do Chain Bandoliers have for destroying other weapons? It seems weird that simple chains would exactly the same likeliness to destroy a weapon as an actual power weapon.

the rules state that its as if blocked by a power weapon (which means 75%) it makes sense against primitive and chain weapons as the chains get caught in the teeth of the chainsword or simply shatter a mundane sword