There are some pretty good intermediate eye relief scopes out there by Burris, Leupold, and other high quality makers. If you could get the scope mount to where the eyepiece is over the front of the action, this type of scope will give you better groups and clearance for your loading/unloading. And yes, a jam screw at the front of the base will help with consistency. Also, have you considered that the stock and bedding might be part of your accuracy problems?
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