I've looked but can't find the specs. So, what is the bore of a barrel of a .22 long/long rifle barrel compared to a .22 magnum barrel. How much does accuracy suffer when shooting non-magnum ammo, in revolvers (like my Heritage) that have interchangable cylinders, in order to handle the magnum bullets? I would "mike" a couple of bullets but I don't have a magnum cylinder or any magnum ammo, yet.