'M-S in celebrity hunt' ?...
So, you're not saying that it's now legal to hunt celebrities with an MS?

I'm glad you linked the text with the pics, as it's rather interesting.

Here are some photos of John Huston with a pair of MS during 'on location' filming of The African Queen. It has been said that the reason he agreed to direct the film was so he could hunt elephant, though he never had before. His daughter, Angelica, has a ranch near here that she visits. If I ever run across her I'd like to ask if she, by chance, has his Mannlichers.

Huston (with MS), some fella named Bogart and 'Bogey's young wife, 'Betty' Bacall.

Cleaning time - note the two MS' alongside.

Detail of MS'
Per the film (and book) White Hunter, Black Heart, they were both 6.5mm (M1903). One is a stutzen (full stocked carbine), the other a half stocked rifle or, perhaps, a takedown.

Clint Eastwood portraying Huston in the film.
"I'll take a couple of these Mannlichers, the six - point - fives", says Eastwood as Huston.
Eastwood is holding a Takedown Model (forend pin is visible), perhaps with larger bore than 6.5mm.

Additional photos of MS with takedown pin more plainly visible, held by Eastwood and co star: