Can someone please explain Gunner and Target Locks to me again? How many re rolls do I get?

I shoot and he evades. No hits. I use gunner. I shoot again. I roll two blanks. Can I spend my TL now and reroll them again?

I'm ashamed to admit this, but I get confused every time I see this.

Gunner is counted as a separate attack so yes, you can use a TL with the Gunner attack.

Entry on Gunner in the FAQ:

"Using Gunner’s ability is a separate attack, which means that the ship can choose to declare a different target for the second attack, and any abilities to modify attack dice (such as spending a focus token or a target lock) must be used for each attack separately.

When Gunner is used to perform a primary weapon attack, any additional attacks (such as from Cluster Missiles) are forfeited."

You can use one TL during either attack. Not the same TL during both.

If you have two TLs (weapons engineer, FCS), you can use both: One during each attack.

What is the "you may not attack again this round" statement?

Originally it was to prevent you from triggering gunner off of a gunner attack. I shoot-miss, gunner-miss, gunner again-miss, gunner a third time, and so on.

Since then there are cluster missiles, Coran Horn, huge ships with multiple weapons...

Most of the time though it isn't relevant. It is just a special clause to avoid some corner cases that might break the game.

Thanks, Troy.