I had similar problems in a Browning. I put a section of carbon-fiber arrow down each side of the forearm, and filled the forarm with micro-balloon-filled epoxy.
The micro-balloons are available in hobby shops that cater to the remote control airplane crowd.
Good luck,
Don
The wood stock can be channeled out for a piece of aluminum I beam and glassed in full lenth...works real well.
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Ray Atkinson
Bill
Once you have a nice, deep and fairly uniform U shaped channel running the length of the forestock, cut about four strips of the unidirectional graphite cloth to fit within the channel. You will need to trim to get a good fit. You want to make sure that the cloth goes up the inside of the U shaped channel as much as possible (without extending past the top edge of the stock). After you have fitted the carbon fiber strips, take them out and coat the inside of the fore end with epoxy matrix (resin mixed with correct amount of hardener. Hereafter "resin").
Lay in your first strip of graphite cloth and then dab in some more resin (so you get a good wet out). Repeat the process, laying in all four pieces of carbon fiber cloth and make sure they are thoroughly wetted out
with resin.
Don't worry too much if some cloth extends up past the edge of the stock. You can trim it easily with a knife after it hardens. Be sure and mask the stock on the outside!!!
Let the lay-up cure. Do not use radiant heat to assist the cure!!! The carbon fiber cloth will warp and twist the stock. You can use a flowing heat such as a blow dryer.
The carbon fiber/epoxy matrix in a U-shape gives phenomenal strength and stiffness. The U shape gives much better stiffness than just using an arrow shaft or two. Be careful when working with the cured carbon fiber edges. They are razor sharp.
When finished, you can fill the channel with some expanding foam and then bed/float the barrel as you normally would.
Jordan