As always, be careful with what you say about "Castle Doctrine" or "Stand Your Ground" laws. They are NOT a foolproof path to justifiable homicide bliss. They simply reduce your burden of proof
in one category when you offer your affirmative defense for the homicide you've committed.
You may use deadly force against anyone who puts you in fear for life.
Anywhere you have the legal right to be.
That is, when someone puts you in actual jeopardy or
reasonable fear thereof. If the DA decides that your fear was not realistic, you will still be charged. Your claim of fear of deadly violence may be disputed and you certainly may still end up on trial. These castle doctrine laws do NOT change the requirements that you verifiably establish that your attacker had the ability and the opportunity to put you in jeopardy -- those being required in any jurisdiction to be able to claim "self defense."
What they can do is to define certain circumstances (such as someone violently entering a home or sometime a car) under which their motives may be assumed to be worthy of a lethal force response. And, in general, they may remove the requirement for you to have exhausted every other avenue of conflict aviodance, such as retreating.
It does NOT matter wheather you use a sharp stick, or a 40mm grenade launcher.
If you use deadly force in self defense, you CANNOT be sued.
This hearkens back to several other threads we've had recently. If you use deadly force in self defense -- and your claim of "self-defense" is accepted and upheld by the DA and/or jury -- you are immune from further civil lawsuits. If the totality of the circumstances do not support your claim, and your self-defense claim is rejected leaving you convicted of manslaughter or something worse, then there is no protection for you against civil lawsuits.
Useing "less than lethal rounds", will get you charged with shooting to mame. In that case You CAN be sued.
Can you provide us with a citation or some case law on that? If your justification for shooting is sufficient, it doesn't matter what kind of force you used. If your justification is found to be
insufficient, less lethal rounds don't get you off the hook. Under what aspect of law do less lethal rounds place you in special jeopardy, legally?
Now, less lethal rounds are NOT a good idea -- you're still using a firearm and that means deadly force, so your standard of ability, opportunity, and jeopardy remains just as high. If you can't lawfully fire on someone with buckshot, you can't lawfully fire on them with any other firearm round, either. So there's no value in using them. They're just a less effective form of lethal force, from a civilian defensive standpoint, so you might as well use something that is known to work in most cases, like buck or slugs.