50-300 USd
54 million
4/100's of an inch. .50 cal = .5 inch .54 cal = .54 inch
around 3500 fps
54 million dollars.
50-150 USD
Remington didn't make a model 54, Winchester did but not in 22 (that I know of), Marlin model 54 is a shotgun.
Yes
1 and 48 twist
Maybe 300 or so
100-300 USD
Depending on the model and in top condition or new in box, they are selling as fallows. The KP-1 and MK-85 in .54 are selling around $225 +/- extras like stainless barrels and camo stocks are adding $50 to 75 to that.