Just my $0.02, but since the rifle has zero collector value (restocked, etc), I would install a Weaver side mount base to the left side of the action.
I've successfully used it on several older .22 boltguns, that were sans scope mounting grooves.
The base will accept either 1" or smaller(older) Weaver bracketed rings, which will hold a scope in a low central overbore position.
http://www.midwayusa.com/eproductpag...eitemid=119028
http://www.midwayusa.com/eproductpag...671&t=11082005
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