They compared the accuracy of 12 OU double rifles with 3 types of ammunition (RWS TIG, Norma Oryx and S&B SP) at 50 meters:
- Beretta 686
- RWS
- Zoli Focus
- Fabarm Asper
- Blaser 2000
- Chapuis Super Orion
- Verney-Carron Sagittaire NT
- Browning CCS 25
- Sabatti Luxe
- Rizzini Small Action
- Heym 2005
- Fair Safari

The Sellier & Bellot ammo gave the worst group (13 cm) in the Browning. RWS TIG and Norma Oryx gave 4,5cm and 5 cm groups.

In the second part of the article, they tested the regulation rings. The author didn't believe at the start of the article that it would work. He chose RWS T-mantel 196 grain ammo (instead of Winchesters with Nossler Partition 200 grain bullets which were used to regulate the gun at the factory).

All rings gave different group sizes. The best being 1.5 cm at 50 meters (worst was 19 cm).