Gunbroker.com has four rifles like yours for sale right now. All four of those rifles are larger caliber than yours. They range in price from $425 to $490.
I have this nice Bob Owens cue. It is a 6 point cue (3 high 3 low). Forearm is nicely figured Coco. Points are birds eye maple with four veneers. The joint is stainless steel with a 3/8-11 brass pin. It has a textured leather wrap. The butt is also nicely figured coco with 3 boxes with mitered veneers. Between each box is Ivory inlays in the shape of dot diamond dot. Nice ring work at all the locations. The butt weighs 14 7/8 oz and rolls straight. Shaft 1 weighs 3 3/8 oz measures 12.91mm and rolls straight very minimal play. Shaft 2 has never been played weighs 4.0oz and measures 12.91mm. I value this cue at $1,000.
I would be willing to trade my cue for your rifle and $550 cash.