The Crosman Phantom is still in production and sells for $90
the CS6M22X I believe is the .22 version of the Crosman Phantom .177 cal rifle. See the link below for the .177 version of the parts list.
The Crosman Phantom is designed to shoot ONLY .177 pellets NOT BB's, they will ruin the rifling in the barrel.
No it is not possible (in the USA) Crosman only makes the Phantom in a 177 Caliber. However I believe the Phantom .22 is made for Canada and Yes it will kill a bird.
I think you will have to contact Crosman directly to get an answer to this. See the link below
Crosman doesn't advertise the "Foot Pounds" of their airguns but they do state the FPS "Feet Per Second". The Crosman Phantom .22 is rated at 495 FPS. If you still want to know the Foot Pounds I suggest you contact Crosman at the link below.
6.2 Lbs without scope
China
Crosman pellets are fine. however if you really want quality pellets I suggest H&N pellets
See the link below for the drawing.
I don't believe that Gamo it still making the Hunter Sport anymore. But It may still be in stores. The Crosman Phantom 1000 has great reviews but I would lean towards the Gamo as my choice. But it's all up to you.
Yes, I suggest using Hollow point ( Hunting ) pellets