I think the Second Amendment is one thing and the RKBA is another.
If you want to support the individual RKBA, the right to CCW or shoot burglars or whatever, then there are lots of statistics which show that guns make us safer ... or you might talk about the fundamental right to self defense or that kind of thing.
And if you want to support the Second Amendment, then I think it becomes a matter of establishing that free government is superior to monarchy, and that free government requires an armed people.
But if you attempt to roll it all into one issue, and try to prove that the Second Amendment protects our individual right to CCW and shoot burglars or whatever, then I think you would no longer be pushing the RKBA or the Second Amendment but rather be pushing an extremist view of the 14th Amendment.