NO!!!! 45 Long Colt may fit in the bore, but centerfire pistol cartridges run higher pressures than shotgun, and it could lead to a catastrophic failure.
Needs to be checked by a gunsmith
How much is a 60 year old Harrington & Richardson Handy Gun, 410 gauge worth?
BAY STATE MODELS WERE MADE IN THE 1950 ERA
50-100
H&R / Harrington & Richardson
Serial numbers were not required before 1968
About $75-90 depending on condition.
50-200 USD
Serial numbers were not required until 1968
In really nice shape, about $125.
Probably Harrington & Richardson
100 USD give or take