I recently bought a Savage 24 22 long rifle over 20ga. Eyes are getting older and kind of hard to focus on the open sites. The 22 barrel is grooved for a 11mm dovetail scope mount. But when looking at the receiver it is stamped do not fire shotgun barrel with scope mounted. Just wondering if any one knows why and if it is an issue or is this just something from years past that had to do with very poor eye relief scopes. Did a search and no info came up. Thanks, B-78