Not recommended.
Yes, Ruger made them
50-200
Ruger.
Ruger's web site has extensive sn data.
Ruger 1022 .22cal rifle (semi-auto) Remington 572 Fieldmaster .22 (pump)
Depends on what caused the jam.
75-300
Check the receiver and barrel
50-225 usd
50-200
it is worth ..............$$$$
Depends on the store.