The cost is a combination of:
Proof House charge for proof test. (about 45 from memory)
Carriage from USA to Registered firearms dealer in UK.
Preparation for proof (jointing must be VERY tight - it is freed off afterwards - and all woodwork removed.
Carriage to proof house and back after proofing.
Freeing off, post proof, and re-assembly.
Carriage back to USA from UK.
It is quite an involved and costly process.
It is also tough on the gun. Unless your gun is out of proof, don't do it. They fire two proof charges (125% of maximum CIP service pressure for the type of ammo intended).
Now the CIP chamber dimensions are being rigorously enforced, you will probably need the chambers re-cut to conform. Many guns are failing re-proof due to this recent imposition.
Last edited by Small Bore; 11/10/14 02:47 PM.
