I started out at 50 yards with the left barrel hitting about 8in high left and right barrel about 6 inch right. The first adjustment I went the wrong way and they went over 2 feet apart. On the next I went too far and they crossed about 6 inches apart left and right with the left Barrel about 8 inches high. I wedged the barrels into the picnic table to give them a clockwise twist if you're looking from the butt of the gun and a small adjustment of the jack screw. I then backed up to 100 yards and repeated this shooting a left and right with an adjustment in between 7 times. I reshot one time because I snatched one shot way low after holding too long and running out of breath. These were the last five shots of the day as it was starting to get dark. Not bad for 20 shots total with cast plane base 405 grain bullets. Everything works like clockwork when I made an adjustment to gun responded pretty much as I desired. I believe I will have it shooting pretty good before I finish the next box of cartridges.
https://ibb.co/niJa1w
<img src="https://image.ibb.co/cp9R8b/20180120_175122.jpg" alt="20180120_175122" border="0">

Looks good,should be a great piggie killer.

Hey Tex, How much room is around the right barrel and the muzzle collar on your gun? You can see light all the way around mine.

Fold I will take a look this weekend. I have looked at it close but never held it up to the light if there is any room it is very little. I'm going to say it to Snug slip fit. I had intentions of a silver soldering it in place once I had to go unregulated but it is regulating so easy as long as I don't have problems I think I will leave it to where I can adjust it in the future. So far every movement I have made of the jet screw has got an appropriate result on the target. I wasted two shots by turning it the wrong way, and one shot from snatching on the trigger. So I got it regulated to the point in the picture there in 12 shots with two of those being from over adjusting and having to come back. So far it has been an easy peasy even correcting the vertical.

I think that mine's broken. If I push down on the end of the barrel I probably have a .050"-.075" gap at the top of the collar.

Got one of these as well. Light to carry with nary any recoil. I too went through some ammo getting sighted in. Fun little gun that hits hard.

I have a 30-06 and a 45-70; neither has any room to spare around the front band. I have not fired the 45 but the 06 shoots into one inch at 50. That band is pinned to one of the barrels to allow the other one to move. If I had one that would not shoot I would also not hesitate to solder the band on both barrels and rotate it (hot) for regulation. Of course, horizontal regulation is done with the center screw/wedge mechanism.