You need to be a bit more specific about WHICH 22 rifle, but there were several that loaded through the buttstock. On those, the hole is where ammo is loaded into the rifle. Hole is typically an elongated teardrop shape.
Pillars embeded into the wood
100 and up
They started using wood in 1923 with their first rifle, and still use wood today on some of the models.
Yes
The slender metal part of the rear of the frame that extends into the wood of the stock.
The stock and forearm were traditional wood, but can be other materials. With the AR15 and M16 rifle, they are made from metals and plastics.
Value of Rifle by Norinco SKS 7.62x39 with and without wood stock?
The stock is the part of a rifle or shotgun that you place against your shoulder. Usually made of wood or plastic, they can have different shapes.
Sheets of different woods are coated with glue, pressed together, and when glue has set, wood is carved into a rifle stock. See the link below for pictures. Sometimes done for strength, sometimes for appearances.
Your first step is to go the library and check out books on wood working
Good collector's rifle value $70 - $150 USD in 2012. No major damage to wood stock and most bluing on metal intact.
What is your question?