I would recomend a ROSSI multi barrel package.It is a single shot break action rifle.It has one lower assembly and as many interchangable barrels as you choose.You can then have a 22lr,20ga,12ga and a center fire like a 308 or 30-06.It is technically one gun as the lower assembly is what is tracked by its serial number.For cleaning the barrels I prefer BORE SNAKES.They make cleaning stupid simple.I would not reccomend a semiauto for some one just starting out.The disassembly to clean can be a little intimidating.

BOATMAN
John