I have taken elephant, buffalo, a lion and a leopard with my Krieghoff Teck O/U double rifle, with interchangeable barrels in .458 WM and .375 H&H. I have also taken eland and greater and lesser kudu with the same rifle.

At the time I bought the rifle (1970), Kynoch had ceased manufacturing ammunition for the classic double rifle cartridges, hence the use of rimless cartridges. However, the extractors/ejectors have never failed to work as designed.