This sounds like really long fight as I can imagine and yes I know about the shield part.What in terms of SFC game speed slider would this be at?
SFB turns didn't take a set time, it depended both on how decisive a person was and how long it took to roll and allocate damage (very time consuming). The battle was over in 3 turns (the length of time to arm a Plasma torpedo) as I
severely suckered the Fed. He went very quickly from "I have him where I want him" to "how can I survive?".
The Fed made several mistakes.
1/ Forgot the phaser capacitors and correctly didn't think that while charging phasers I couldn't move as fast as I did while reinforcing shields, but the Ph3 were charged on the 2nd turn not the 3rd. This meant I had substantial extra power and since I had been travelling slower the prior 2 turns than I had to he thought I had even less power than I did. All that power was on the #1 shield allowing it to (barely) survive the partially overload photon barrage (helped by a miss).
2/ Didn't understand the forward center line limitations of the CS and allowed me to get him there and keep him there for consecutive impulses.
3/ When his Photon barrage failed to knock down my shield he kept coming even though all his phasers had been fired shooting down my 6 drones (launched 2 each of the 3 turns of the battle to that point). Combined with #2 above this allowed 4 mizia volleys
4/ Assumed that because I fired 2 drones a turn that was all I could fire - I had 4 A-Racks. The extra 2 drones fired at point blank range added 2 extra Mizia volleys (6 total).
5/ Even though in serious trouble he stuck to his plan to pull a HET after the over run and position himself to hit me from behind on the 4th turn. This merely let me get 2 more volleys on his downed #1 shield with my aft Ph3. (8 total)
At this point he knew he was defeated and was unable to disengage so he tried (and failed) a sublight evasion (drop the warp engines and escape in the saucer hoping the location of the separation would not be detected). Given the condition of his ship he had to admit he could do nothing to stop my capturing it, which we did not play out.
Note: We were not using scatter packs or suicide shuttles so neither of us had to worry about them.