Arright. If this is the case, the NY law is fully sideways from Heller on this count.
It goes like this:
Say you have an eight-shooter DA wheelgun by S&W or Taurus. Heller says you can have it in the home "for purposes of defense".
That has to include the ability to reload it and use it in combat.
Let's assume you meekly follow NY law and carry it seven-up, hammer on the empty chamber. There's a problem here we'll get back to but so far so "good".
Now what happens when you try and reload it?
Well you use speedloaders, or moon clips on some variants - S&W has an N-frame 8-shooter in 38Super for example. Here's the kicker: if you carry the moons and/or speedloaders with seven rounds as well, when you reload under stress there is a one in eight chance it will not go "boom" when you pull the trigger.
At that point the gun is not reliable for personal defense. It is a case of "reverse Russian Roulette" - it may or may not go boom following a reload.
So, let's assume you keep the moons and/or speedloaders set up with 8 rounds. OK, fine...except your first string was seven, right?
You are supposed to count your shots and keep a mental tally of how many are left!!! Any school of firearm self defense will tell you that, esp. where relatively low round counts and long reload times of revolvers are concerned.
Not everybody has a "Maurice" that will lock up and stop rotating once empty (because the follower in my mags runs forward and ties the cylinder up, providing tactile feedback that it's dry if I try and cock it dry).
Having a gun available in the home for defense has to include having the gun fully functional - and reloading is a normal defensive function.