They COULD be called riflemen and/or riflewomen- but most are simply called shooters.
Repeaters
Repeaters
Better than 90% of the people who shoot them.
No
Yes
DO NOT SHOOT AMMUNITION IN A WEAPON NOT CHAMBERED FOR IT. If you do, bad things will happen.
Shooters or Gunners
There called C02 air rifles or PCP air rifles
The 5.56/.223 Remington rifles can be. Other calibres cannot be, unless the upper is replaced.
jobless
Pretty much any bolt action.
Needs to be examined by a gunsmith.