You did not dream it however the barrel's solder must be liquid (by heating it) in order to do the twisting of one barrel up and the other down. Watch the "Inside Holland & Holland video where Steve mounts the barrels on a somewhat precision block plate and makes certain that each barrel at the muzzle is down against the forward block while the solder cools back to a solid.
You can make such a tool to insert into the barrels at the muzzle--twisting fork, or make a twisting fork to fit over the outside of the barrels. Which ever you prefer. You need the fork because the barrels are hot, however you can twist them by hand while hot by using a thick insulated leather glove. The fork like tool is shaped somewhat like a blacksmith's scroll bending fork, with the part that is inserted into the barrel 90 degrees to the fork handle.
You must measure where the barrel are in relation to a horizontal plane before you attempt to twist them; and then measure where they are to the plane afterwards. In your case you will only need to twist them a very few thousands of an inch.
A good barrel regulator like Steve at H&H can align the barrels horizontal by eye, hold them down while they cool and "Bob's your Uncle" he has them spot on.
I am certain there are gunmakers in America that can show you this adjustment--which is easy to accomplish.
Last edited by bushveld; 05/27/12 11:24 AM.
