You will need a gunsmith to know for sure.
You probably wont be able to. They would have to be specifically fitted to your receiver.
No
colt
The main body of the rifle/weapon into which the barrel is attached.
H&R and I believe Rossi have single shot rifles with interchangible barrels.
Heavy Barrel
On the receiver
Rifle Muskats Sub Mrines Rifle Barrels Cannons
Turnbull
Metal
rifle barrels may have a different external diameter. A rifle that is carried for hunting will usually have a "sporter" barrel- slender, to save weight. Target rifles will have more massive, stiffer barrels for accuracy. Those are "heavy" barreled rifles.
What do you mean by short barrel? They were all 24" barrels. The barrel is measured by putting a stick ( or whatever ) down the barrel from the muzzle until it hits the bolt, it is not the measurement from the muzzle to where it hits the receiver. True for all guns. That is the barrel length. The 241 is a "Takedown" Rifle, so you have about 3/4 of an inch beyond where the barrel meets the receiver that is threaded so you can assemble and disassemble the rifle.