Ja i alle fall fra alle seriøse leverandører. Som S&L og mange flere. Her et utdrag fra brukermanual.
Schultz & Larsen barrels are cut rifled and every barrel is lapped. There is no need to “shoot in”, just take it out and start using it. The bore after lapping is micro rifled. Micro rifling are the very fine longitudinal grooves left in the surface after lapping. This micro rifling, together with the slight choke in the muzzle helps prevent copper fouling. The maker says you probably don’t have to do a thorough clean until 300 rounds. This will vary depending on calibre and load.