I repaired the armor damage to my cruisers (1st Terran Strike Fleet) from the first encounter and resupplied them with missiles then tagged the 3 destroyers (1st Terran Patrol Fleet) as an escort group 100k km ahead of them.
Not at home to copy in the ship stats, but this is what I had.
1st Terran Strike Fleet:
1 SCL - sensors and Jump Drive
3 CA - 10 size 5 missile launchers loaded with 50 strength 6, 50m km range 14k km/s attack missiles (previously used strength 2, 80m km, 17k km/s missiles) - 2 FCs
3 CE - 10 size 1 missile launchers loaded with 610 strength 1, 1.1m km range 26k km/s defense missiles (same as first battle) - 2 FCs
1st Terran Patrol Fleet:
3 DD - as mention above, 120k km range triple turret at 12k km/s tracking.
The NPRs had actually placed a picket on the otherside of the JP that I had used to enter their system, so they had an advanced picket of 3 missile ships at an estimated 17k tons.
They spammed missiles like they were going out of fashion, and these ones were strength 6 this time (last battle they were strength 3). 3 salvos every 40 seconds I think, 2 of 14 missiles and one of 9 (the missile ships were two separate classes) at 9k km/s. During the whole engagement they only hit one of the destroyers 3 times and that was because I did some time increments too long. My PD missiles performed at about 75% interception overall, they were set to 1vs1. The destroyers didn't get much of a test in the PD role because I was heading into the fire at a combined speed of 13k km/s and the PD missiles were taking out most attack missiles before they got within my inner envelope. If I was the one being chased then I would have had the DDs go their full 5k km/s and directly away from the missiles, possibly giving me 3 shots before they got to attack range. The triple lasers were getting about 33% success rates I think.
I fired a total of 1700 PD missiles, at a 1v1 PD setting and 75% success rate that means the NPR ships must have had BIG magazines, especially since their missiles were size 5.
I fired a total of only 75 attack missiles myself, just so I could get the intelligence reports when they hit and to see if I could knock a couple of launchers out. The reason I was attacking was so I could test my DDs out and I didn't want to waste ammo.
They finally ran out of ammo so I detached the DDs and they sped after the NPRs. I had them set to follow at 100k km but that wasn't working well with the time increments so I just went with plain old 'follow' and had the lasers set to open fire. They did one point per hit at 120k km, max range. They did 4 points per hit at 60k km and less.
Didn't take long to chase the NPRs down and whack them!
I had to head home after the battle though, down to just 61 PD missiles and 75 attack missiles so if I tried to force the JP I would have been stuck with just the 3DDs for combat power.
I have another 3DDs cooking and am near ready to finalize the design on my Destroyer Leader which will have a 4ship Jump Engine. I am also going to design and build a collier for attack missiles and in the future give my missile attack ships more than just 50 missiles!!