Gentlemen,

I recently purchased a .300 WM SxS double rifle marketed by Flaig's back in the 1970s.
My gun was proofed in 1970 and built by Ludwig Borovnik of Ferlach, Austria.
Barrels are approx. 24 ". Does anyone have any idea what bullet weight was used to regulate these rifles...150 gr or 180 gr or ???

Any information about the rifle is greatly appreciated.

Regards,
JMV375