Simply put, no.
if it has a choke like poly and or screw in choke dont shoot slugs as it can dammage it
It is not recommended to shoot slugs with a power pack chock on a JC Higgins model.
yes.
If it was made to shoot steel shot and has interchangeable chokes.
There is a tool known as a choke gauge. It is a tapered length of metal that is placed in the bore, and measures the width of the muzzle. Or- shoot the shotgun, and determine how it patterns, Purpose of a choke is to to open or close a shot pattern- and proof is in what the gun does.
I see no reason that you cannot.The steel shot sould work fine in your ranger model 120 shotgun.
Slugs will shoot safely through any choke but Improved cylinder or full cylinder should work.
No.
100-600 USD, depending on model, condition and accessories.
Only with cylinder and improved cylinder choke tubes.
no
50m or so