Ya, something like that i would guess.. I get the feeling Scotty was doing whatever it took just get a few shots out from what charge they did get.
Wonderful, although I might be a bit biased! Seems perfectly accurate for the Romulans. It might be interesting to do a bit of speculation about the evolution of Romulan power sources while you're at it.
Definitely a topic worth revisiting, though. Especially since we've added the California class ships to the historical mix. The oldest of them seem to have come online around the same time as the Ambassadors.
I thought the California class was a contemporary of the Galaxy, launched round about Wolf 359? At the earliest I could see them existing, in a radically different form, is as contemporaries of the Springfield or Cheyenne based on the long thin nacelle shapes. I'd consider the Springfield & Ceyenne to be 2350s ships, alongside some of the later Ambassador class ships (which by then would be a ten year old design refit after the loss of the Enterprise-C). Going off purely ascetics, though, I'd have thought the California class were contemporaries of the Akira class, from the Dominion war period. They have a style that seems to owe more to the ships first seen in First Contact than anything else, which to me suggests a Dominion War era launch date. Even the Cerritos' old, faulty equipment seems to be TNG vintage at the oldest, and mid-late TNG at that!
The California-class incarnations of Robidoux and Solvang had registry numbers in the 12### range, close to the Ambassador (NCC-10521) and Horatio (NCC-10532). Mr. McMahon's been saying that the California class have been around "forever", right?