Yes.
Basically they are the same. But a long Barrel and a long shoulder stock make a gun a Rifle.
a rifle comes to mind
A rifle or cannon
Rifle, handgun and shotgun can all have "long" barrels
A rifle is a long gun with a rifled barrel designed for accuracy at long distances, while a shotgun is a long gun with a smoothbore barrel designed for shooting multiple projectiles at close range.
gun shop, gun show, on line auction, egunparts
Take the rifle to a gun shop so they can figure out what make, model and caliber rifle you have. There is no 84 caliber long rifle.
Chipmunk
Gun can refer to a long gun or a hand gun. A rifle is very particular. It has to have grooved barrel which spin the bullet when it is going down the barrel. This spin action on the bullet makes it more accurate.
If the round won't fit into the handgun, then it's probably not chambered for long rifle rounds.
Go to Numrich Gun Parts Corp.They should have what you need.
The model 2025 is a rifle not a gun and it's 33.5 inches long.