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|05-23-2019, 03:18 PM||#1|
Join Date: Aug 2018
Synthetic stock filling.
Ok so quick version, I bought a Remington 770 270. Black synthetic stock. It's light weight about 7.6-7.8 pounds. I am looking to add weight to the buttstock that is hallow and stiffen the front end a bit.
It was and still is a cheap bush gun and a training rifle for my younger family members. Its kicking like a mule to them. Problem is I'm not sure what to use as the filler. I am using steel bbs for the weight and I know I need an rtv epoxy or silicone of some sort. But what will be best for the recoil and not falling apart after a few shots?
|05-23-2019, 04:10 PM||#3|
Join Date: Dec 2002
I'm not sure how it would work in your case, but some people fill hollow stocks with expanding foam to stop the hollow "THONK" when the stock is bumped.
You could partially fill the butt area, let it fully expand and cure, then put in a bag of buckshot, lead bullets, or car tire weights and finish filling.
You might want to do the foam fill in smaller stages to prevent the solvents from softening or damaging the plastic.
Another option a buddy used was to shred up some of the plastic foam used as packing material and pack it into the stock. In the middle, wrap some lead bullets or buckshot and pack it tightly in place and finish filling the stock with more.
The type of foam he used is the type that is in sheets and is wrapped around items that are shipped.
To stiffen the forearm you can drop in a steel bar and fill with epoxy.
You have to do this carefully because epoxy generates a surprising amount of heat when it "kicks over" and starts to cure.
It could be enough to damage the stock.
When working with epoxy you need to give it help to adhere because it won't stick to most of the nylon based fiber bearing plastics uses in stocks.
To do that cut many shallow under-cut holes in the area where the epoxy will be added.
The undercuts give the epoxy a mechanical lock so it can't vibrate loose.
Last edited by dfariswheel; 05-23-2019 at 04:12 PM.
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|05-23-2019, 04:11 PM||#4|
Join Date: Jan 2008
Location: San Antonio, TX
I suspect that a combination of "slow set"mepoxy resin & micro-balloons or plain old sawdust (IF you are a CHEAPSKATE like me!!) would work fine.
(In the event that you ever decided to remove that "filler" it would be "a real trick" to ever remove it. = "Peanut Butter" is stronger by weight than steel, once fully cured.)
Note: A member of a boating club to which I used to belong, "armor-plated" a plywood Grady White runabout with epoxy/sawdust/fiberglass matte.
Several months later, the member hit a pier with the boat at about 30MPH (The steering/throttle "locked up") & severely damaged the PIER. = Other than "cosmetic damage" to the finish, the boat was undamaged. =====>Epoxy/composites are TOUGH.
Last edited by Doughboy; 05-23-2019 at 04:16 PM. Reason: clarity/typos
|12-28-2019, 03:44 PM||#5|
Join Date: Dec 2019
It depends on how heavy you want go. For back end of the stock.. rough it up with a bastard file in side and then tape off a dam of tape. Fill the bottom of the stock with devcon or marinetex filled with #8 shot to get your weight. Roughing it up gives it something to bite on. Let that set, trim so it's flush.. file /sand as needed. Then fill the rest with an expanding foam insulation (tape off your stock.. that stuff bonds to anything). Again, sand smooth and you've filled in your stock.
I've seen folks route a couple of grooves in cheap savage plastic forends and place some carbon fiber arrow shafts cut down in there to provide lightweight strength. Then they filled er up with devcon (I haven't seen the inside of your stock, but savages had hollow cavities that could be filled).
You will want to create a mechanical lock.. a lot of the cheap stocks are just made from some material (that I used to know the name of and have long since forgotten) that just doesnt bond to anything..
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