Removing the action from the barrel ?.

[Alpha1]

I have never done this my self I just wondered obviously the barrel is clamped during this operation. The pictures I have seen of the spanner used to screw the action off shows the tool to be very substantial with a long heavy handle how much force is required to remove a action are they on that tight.

[ovenpaa]

A barrel torqued to an action at 100f/lbs such as the Accuracy International is going to require more torque to crack it off, possibly up to 40% more depending on when it was last done, condition of threads etc. Something like a Mosin Nagant could require in excess of 300ft/lbs.

Tips:
Use a good quality breaker bar, the torque wrench is for tightening something up not undoing it.
Use a torque wrench that is in calibration and back it off to zero when not in use.
Take care to use correctly fitted action keys/spanners/clamps as it is very easy to distort an action.
Make sure your barrel vice is attached securely to something solid and equally secure.
If using an internal action key support the rear of the action if possible.
Lead sheet is gripper that rosin or similar and does not mark the barrel or action (Usually!)

[The Gun Pimp]

I have never done this my self I just wondered obviously the barrel is clamped during this operation. The pictures I have seen of the spanner used to screw the action off shows the tool to be very substantial with a long heavy handle how much force is required to remove a action are they on that tight.

Like you wouldn't believe!

[ovenpaa]

There is a great YouTube clip of someone removing a Mosin Nagant barrel, he has a lump of scaffold pipe about 8 feet long and is all but bouncing on it. There are tricks you can resort to if the barrel is really tight however do not expect to use the barrel again afterwards.

Tip:
Remove the front rail screw if in doubt as it might be impinging on the barrel thread, same applies to any bottom screws on tube guns (I can think of at least one GB F/TR shooter who can confirm this)

[Alpha1]

What's the legal position can you remove the action from a rifle you have on ticket and re chamber it your self to a different calibre. 6.5x55 to .260 for instance. Or does it have to be done by a registered gun dealer/smith. I guess you would have to tell the plod what you were up to and get it re proofed.

[ovenpaa]

In theory you need a variation that allows you to hold a separate barrel and action however if you speak to your FEO he might be OK with what you are doing. No, you do not need to Proof the barrel if you are keeping it, however it will require Proof if you ever decide to sell it. The Action should already have a GBP (Gun Makers Proof)