everything will come under scrutiny in a civil case..doesn't matter how justified the shooting..there its all about the money..not about innocence..
everything is defensible as long as you are justifiable in your shoot.
and were not negligent.
your training will be called into question, do you compete, do you reload, what other guns do you have, etc..
if a trigger job makes the gun better for you too shoot and makes you more accurate..that is defensible...
no matter what happens..it won't be fun..