SS88. The scope mount rails on ours have never been problems. Of course the mounting screws were immediately checked after purchase and lock-tite was applied cause I don't trust ANY scope mounts that I, myself didn't do.

The rails are indeed mounted DIRECTLY on the barrels, as there are no "receivers" on these accutely accurate single shots.

We love the accuracy we receive from our H&R's and to be absolutely truthful, haven't needed second shots.

Uncle Matt (in IL)