void fill media for bedding

[Hopkins]

I have a bedding project that involves a limber forearm that has 125c.c.'s of void in a honey comb configuration. I can fill it completely with Devcon which is pretty heavy or fill partially and then bed it. This forearm is a virtual trampoline so I really need to stiffen it up. I am wondering what might be used to fill the voids under the bedding. Any suggestions will be welcome.

 

[StevenDzupin]

Glass micro balloons, Fiber Glass powder, Carbon Fiber !

Also a lot of Epoxies. No real need to pack everything with Devcon.

Any good Boating supply will have these and more that I can't think of.

Jamestown Distributors comes to mind. Google is your friend.

Regards,

Steve

 

[holl]

Ive read that people have inletted steel rods in synthetic forearms to make them stiffer. Or, if that is too much weight how about the spray insulating foam to fill the honeycomb, and Devcon on top?

 

[Alex Wheeler]

If I had a real limber stock and planned to use it, I would inlet carbon arrow shafts from the tang area out to the end of the forend and epoxy them in. I think epoxy alone may crack up without something to strengthen it, like rebar in concrete.

 

[PhulesAu]

Since you said Honey Combed , I'll assume it's not a Remington stock. The carbon fiber arrows are a neat trick, just make sure to scuff them lightly. If this is a Remington stock aka tupperflex, Do Not Bother.

 

[Hopkins]

The stock in question is for a Steyr M Professional. The rifle has a rotary magazine which also contributes to stock flex. The gun suffers from a shift in POI with every change of position of support on the forearm. I have considered inletting an Anschutz accessory rail under the forearm but it seems impractical . At this point I have pillar bedded it and have concluded the only solution is to bed the barrel from chamber to the end of the forearm.

 

[itchyTF]

Not so sure bedding the barrel will work in your favor. It may be drastic, but have you considered another stock?

 

[Hopkins]

At this point I cant think of any other stock modification to try without glueing the action and barrel into the stock.

 

[ar15topgun]

Have you considered cutting a channel in the barrel groove and epoxying in a 1"x1/4" piece of flat aluminum running from just in front of the pillar to about 1" from the forearm tip? This will stiffen up the forearm without adding much weight. I have done this and it works well.

 

[jpretle]

There may be flex in the forend, but I wonder if there is more flex where the stock accommodates the rotary magazine, that is really causing the problem.

 

[Hopkins]

I considered inletting under the barrel channel for a hidden aluminum rib and may resort to that if the full length bedding fails to deliver.
The rotary magazine well contributes to the stock flex but unless I convert the gun to a single shot there seems little I can do remedy that. The rifle is capable of very satisfactory accuracy when coddled on a bench on a rest.