If you plan to stay put in SHTF then I agree with the others, practice 3-50 meters for house to house and block to block. If you plan to bug out to a more open area like the mountains then you should beef up on long range rifle. No matter what you should practice both if this is what you are planning on, but I would put my money on tactical shooting with a pistol for an urban environment. Definitely practice on moving targets and from odd positions.