It certainly sounds as if a previous owner d/t'ed it to accommodate a Unertl/Fecker/Targetspot/Litschert target scope. Were it mine I would round up the appropriate scope blocks (Joe's recommendation of Steve Earle is spot on) and mount one of those scopes on it in order to wring out the nth degree of possible accuracy from the rifle. Those scopes are nigh worthless in the deer woods, but are just the t*ts for massacring paper bullseyes.
"You can lead a man to logic, but you cannot make him think." Joe Harz
"Always certain, often right." Keith McCafferty
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