Check Federal Law, don't ask on here.
Added: Read the federal criminal code from the following statute: 18 USC, Para: 921, paying particular attention to the dates of manufacture.
Do NOT subscribe to the commonly made error of following the BATF definition of blackpowder arms, it does not apply to felons in possession.
You will need a lawyer for a current, correct and legal answer.
No. Absolutely not. A felon may not purchase, possess, or have access to firearms. Period.
When you say Air Rifle you are referring to a pellet rifle not a firearm. At present there are no 300 Cal air rifle being made.
It all depends on the rifle, pellet and power source.
OKAY: What is you queston?
No sn data available; 10-100 USD
Definitely Yes it can.
Rodents and small game.
Gamo Hunter Extreme 1650 FPS - Air rifle .177 Cal Air Force TalonP 900 FPS air pistol .25 Cal Hatsan AT P1 Air Pistol .177 870 FPS The Air Force TalonP is faster in .25 Cal than the Hatsan .177 Cal
Rodents
Some air rifles were available in .22 caliber.
No. Just have to be old enough!
The Benjamin 132 is an air pistol not a rifle, it uses .22 caliber pellets, not .177 caliber pellets. The 130 series of Benjamin pistols were models: 130 shot .175 Cal BB's 132 shot .22 Cal pellets 137 shot .177 Cal pellets If yours is a rifle then I have NO idea what it shoots