I've only played a few times, and only once have I played a 100 pt game to its conclusion. However, that game took 3.5 hours including set up (assembling minis, distributing tokens, building squads as we didn't have pre-made lists, I would say this took about 30 min). Does this seem typical? Both of us were new players, so I am sure we were going slower, and we wouldn't hesitate to pause to make sure we were playing something right, but that only happened a couple times. I know that with attacks in this game, lucky hits could make it very short, and cold streaks could make it very loooong.
What would you say your average home game length is, assuming you are playing until one side has no ships left?