Its got a birch stock so if that original, it's not super old.
IIRC "D" in Ruger serial numbers stands for "Duplicate" which means there's one out their with the same number (but no D).
Had a D80 Superblackhawk (3 screw).
You can clip the factory spring and stone the hammer to Volq type dimensions and end up with a good trigger pull for free.
Or you can buy a Volq hammer/spring and do a quick swap for 30 bucks.
Oldest ones I've had were a standard and a sporter (factory checkered) from '67.
Got my first 10/22 new in '76. Walnut standard.
Sold my '70 sporter last yr, poor thing shot crappy.
The known tweaks helped, but not enough
IIRC "D" in Ruger serial numbers stands for "Duplicate" which means there's one out their with the same number (but no D).
Had a D80 Superblackhawk (3 screw).
You can clip the factory spring and stone the hammer to Volq type dimensions and end up with a good trigger pull for free.
Or you can buy a Volq hammer/spring and do a quick swap for 30 bucks.
Oldest ones I've had were a standard and a sporter (factory checkered) from '67.
Got my first 10/22 new in '76. Walnut standard.
Sold my '70 sporter last yr, poor thing shot crappy.
The known tweaks helped, but not enough