Gun shows, gun shops, online retailers.
Problems are its a very nice gun
Go to Ruger's web site.
A Smith & Wesson .44 Magnum revolver.
It depends on the gun, but usually 5 or 6.
Check Auction Arms, Gun Broker, or just do a web search
The Mysterious Stranger's Gun Is A 44 Magnum Revolver And Are Quite Rare, But Obtainable.
.44 Magnum
You need the services of a trained professional
Take it to the NRA.
Not safely. Despite the tales you have heard about this, the pressures of a .44 Magnum are well above the design pressure of a .410. WHEN (not if) the gun fails, someone is going to be hurt. No. Don't.
Yes, .44 Russian and .44 Special can be fired safely from a .44 Magnum revolver. They are the same diameter, shorter, with less power. Also darned hard to find and expensive.