Interesting thread! I have a drilling fetish, that has been plaguing me for several years... I live in Norway and have been importing several drillings from Germany. I have been restoring them, using and selling after a while. Currently I own three drillings:
1. Merkel 691LS rifle drilling with two 8x57IRS rifle barrels over a 20-76 shotgun barrel.
2. Merkel 96k drilling with two 20-76 shotgun barrels over a 6,5x57R rifle barrel.
3. Krieghoff Neptun Primus drilling with two 16-70 shotgun barrels over a 7x65R rifle barrel. This comes with a gold plated trigger and gold plated sidelocks that are detachable by hand, and an insert barrel in 22mag.
In my view the drilling shines as a hunting weapon when there is a mixed bag. I have shot capercaillie, geese, ducks and foxes while hunting deer. I absolutely love the versatility of the three barrels. I usually hunt by myself with the drilling using the open sights, and I bring a scope along for situations when the opportunity longer shots present itself.
Here are my preferences when it comes to drillings:
- 16 or preferably 20 caliber shotgun barrels. I find that 12 bore shotgun barrels make the drilling clumsy and ruins the balance.
- Rimmed rifle cartridge. It can be hard to extract a spent case during cold winter days. I have a love affair with the tiny 6,5x57R cartridge. Scandinavians have appreciated the long-for-caliber 6,5 bullets in 6,5x55 long before the advent of the 6,5 Creedmore cartridge.
- Soldered barrels. The balance and handling ability of the drilling is way better with slim barrel sets. The fee floating barrels are better at the range, but the gun gets heavier and clumsier in the field. And soldered barrels become stiff and often offers a very precise first shot. Sighting in can be a hassle, since the POI rises with soldered barrels. But is of little consequence in the field.
- I absolutely hate the Greener safety… I need the safety to be on top of the stock, like it is on a double-barreled shotgun.
- A quick detachable scope of high quality. I prefer swing mounts over claw mounts, because it is easier to change the scope. We hunt in twilling here in Norway, and I prefer a scope with high enough light transmission, without ruining the balance. I have a Leica Magnus 1,5-10x42 on the K96, and that is perfect for me.
I find that the rifle drilling is a completely different animal than the traditional shotgun drilling. The two rifle barrels on the rifle drilling makes it perfect for big game driven hunts. It is in essence a double rifle with a shotgun barrel available. I used to have one with rifle barrels in 9,3x74R, but I am happier with the one that I have now, in 8x57IRS. 200 grains 8mm bullets flatten wild boar and deer with authority, without the excessive recoil of the 9,3x74R caliber. I regard the shotgun drilling foremost as a shotgun, with a rifle barrel available.