That is a beautiful rifle.
Although it had been waning a bit, every April there is a schuetzen match at the Bridgeport, CT R&P club.
Indoor 50ft with rim and centerfire. The real draw is to see some of the rifles that come in for the event, as there are a number of fairly serious collectors usually present.
Nice to see them shooting the guns as well.
Typically a number of martinis and system Aydts. Some vintage American guns, as well as newer models like CPAs.
I have a Buchel Meister (similar looking to the Aydt) in the 8.15 that I shoot the match with and I get my bullets from Bob Hayley in Texas. I finger seat the stop ring over a small charge of green dot and they cut one hole at 25 yards, so more than adequate for indoors.
I believe that ch4d makes dies as well.
I still find it amazing that back in the day, there were people shooting cleans at 200m- wearing a suit and tie.