So, basically, my beam weapons can have a maximum range of anything up to 8x my current FC tech (4x for the increased-size FC, and 2x because max range is double 50% range), but anything more than that is wasted (aside from the increase in damage with larger focal size)?

For instance, say I have the 40,000km tech. That means that the maximum range for a default FC would be 80,000km, and for a maxed (4x) size FC, it would be 320,000 (but it would say would say "50% at 160,000km"). Is that right?