A fellow club member has a Browning Buck Mark Pistol. This model employs a takedown screw to secure the barrel to the frame in a similar fashion as your Victor does. After a period of time, that screw on his pistol tended to loosen a little, allowing the barrel to "wobble" a bit on the frame.
I have no experience with the SH High Standard Pistols, so this loosening problem may or may not happen to you. As a solution, he applied the following to the screw on his Browning:
Retains assembled screws tightly but still allows occasional turning or adjustment. Works especially well on fine-threaded aluminum and very small diameter screws. Screws ...
Do click on and read the one review that's there of that LOCTITE Product. If it proved worthwhile for the reviewer, it should be useful for your application as well, if the need should arise.