It's funny you should mention Schultz & Larsen, there's an interesting story to our rifling machine. I'll copy/paste it for you.

"In the middle of our workshop in Denmark, we have a piece of world history. This very rifling machine was build by Pratt & Whitney in 1895 and since then it has lived a glorious life. It started out working in the U.S. Armory of Springfield Massachusetts, where it, powered by belts from the ceiling, supplied the U.S. military with barrels up until the first World War. Allegedly this machine then found its way to Germany, where it kept working throughout the war until the Versailles peace treaty put a stop to the production of all weaponry in Germany as of January 10th 1920. Afterwards the machine was bought by the Danish rifle maker Schultz & Larsen, and with this machine the company became legendary world wide for its barrels of unparalleled precision. Sadly though, the famous factory in Otterup was shut down in 1994 and all of the equipment was sold. A decade later the machine was recovered by the founder of Jensen Rifle Company and due to its poor state is was given a much needed full restoration. Being 117 years old you'd think that the machine belonged in a museum, but even by todays standards this machine is legendary when it comes to precision. With its new lease on life this machine remains the heart of our production of rifles here in Denmark and so the legendary Danish precision is back."