Originally Posted by hay
is it possible to rechamber a .22 RIMFIRE rifle to a .22 hornet CENTERFIRE rifle? i would think the bolt action would also be changed? this a a remington model 514 single shot .22 rimfire to be modified. just curious if it could be done and possibly how? by professional or home novice "gunsmith"? any comments are appreciated. thanks.
Chambering the barrel isn't the issue and the gun would probably shoot quite well actually. (let me explain before you get the flame throwers out)
A 22 rimfire uses (we'll simplify this) a "tight bore" where's a 22 Hornet uses a "loose bore" (centerfire dimension) barrel.
What is often done is using a "tight bore" barrel for a Hornet. The trick is knowing this ahead of time so that the reamer has the right pilot.
Correctly done the Hornet will typically shoot a little better. While your at it have it done in a K hornet or Ackley to get a little more velocity out of it.
Here is your challenge though. you have a receiver intended for a rimfire, the Hornet is a centerfire cartridge.
1. rimfire operates at much lower pressure so even if you could get it to go bang the lug surfaces are a bit small (surface area) to be putting up with this increase in pressure.
2. The firing pin is out of location by about .06" of an inch. It'll never touch the primer and even if it did the gun would probably shoot poorly because rimfire striker springs are no where near the power that a centerfire delivers. Weak primer strikes cause guns to shoot like crap.
Your best bet is hang onto that rifle and just go find a hornet. Then get a nice rimfire barrel and have it fitted up so it'll really shoot.