I have a Savage 1899 takedown in 22 High Power made in 1913.
The muzzle is threaded and on the bottom of the barrel below the front sight there is a small notch.

The threading I would assume is for a suppressor. what is the notch for?
Was this done by a gunsmith after the gun was purchased or was this a factory option?

I have owned it for many years but never fired it. Brought to the range and it supprized me how accurate it shot.
With handloads at 50 yards Iron sights a 7 round group measured 1.2 inches.

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