Time for a update in my jurney to get this gun fit for hunt. It's a long text, but I maybe some of you will find this interesting?
-After long delay, I finally got to test the gun. The ammunition who came along when I bought it, was in my opinion not good enough for the real deal. It had a 120gr bullet loaded with 5grains less powder than smallest load recomended. By calculation, it should have a velocity of 5oo m/s at V0. That low speed made me unsure about the deformation of the bullet, and also the impact energy would be less than I prefer. I shot some test rounds of this amunition, and was more dissapointed than expected. There where hardly any recoil, and I had a lot of misfire. I ditched the rest of the rounds, and started a search after the fault. I found two possible causes. The first was the primer. When reloading I discovered that the inner part of the primers who had fired was falling apart from the primer cup. It seemed to me that the primer was not pushed all the way into the bottom of the primer well. It was easy to fix that problem. I used federal primers, (because they have a softer cup) and made sure they got in all the way. The other problem I found was more time consuming to fix. The right hand side hammer is not the originale one. It was scrubbing against wood and metal before it hit the firing pin. This reduced the speed and the energy of the hammer. I took up my tools and started to file away excess metal. At the same time I made som adjustments to make it look more similar to the originale hammer.
It's not finished, but it now works.-)
Then I bought 160 grain hornady SST bullets, who will deform at low speed, and made a "loading ladder" starting from the bottom to the top in the loading chart. At the a new test shooting, the gun fired every round. I started at the low load, and worked my way up to the where I hit the target at a correct height, using the iron sight. They all hit far to the left, about 12-15 cm away from center. Then I reloaded all my cartridges with the correct load, and calculated how much I had to move the sight. I found it easiest to make a small washer at the left side of the rear sight.
Then I tested the gun again. The correction helped, but I still need to move it more over.(don't mind the 10, that was my fault)
I will make a thicker washer and give the sight some more room to move to the right.
Then I decided to adjust the old scope. This old Kahles "Hubertus" is fixed with the Wienna snap fit, and has no side adjustments, exept form the dowe tail at the back claws of the snap fitting. I can tell you I got some eyes looking at me with wonder, when i started to use a hammer (and a brass piece) on the gun :-) Of course the caliper was priceless for helping me see how far I had to go.
The scope works wonderful, and after a few shots, I could take the official test every hunter (and rifle) must take, to hunt in Norway.
The upward hit pattern is pretty much what to expect from a combination gun. I still have some job to do with the iron sights, but the gun is a joy to shoot.
/Joar
