Filling those hollow stocks

[RodBuster]

Those cheap synthetic stocks with the hollow butt section are annoying to me. I have two Remingtons and one Encore that I don't like. I wondered if some of that Great Stuff expanding foam would help.

Anyone ever done this?

Thanks

PS funny how they(factory)stuff a piece of packing material in there to make it sound solid.

[kyelkhunter3006]

Yes, the expanding foam will work.  Fill the stock in steps, use a little and let it dry, then use some more, etc.  Gradually fill the space, don't try to do it in one step, invariably, you'll use way too much if you do.

[drdougrx]

Hi Guys,

Here's another piece to this.  I have a Rem 700 BDL SS with a hollow plastic stock.  I used the expanding foam insulation that you get at Hm Dpt, in a black can.  I did it in one shot...filled er up and reattached that recoil pad.  A year later, the recoil pad fell off.  What the heck? 

Seems the moisture or the components of the foam rusted away the screws holding the pad to the stock!  So...Kyelkhunter is right on the money...fill the stock a bit of the time and let'r dry before reinstalling the pad.

[RodBuster]

Thanks for the reply.
I'll give it a try.

[springer222]

I used a filler material and then fiberglass resin. I also added a mercury recoil reducer for the heavy recoilers. This not only fills, be also adds weight. I also did in "batches" because of the heat as the resin cures. You will have to find a filler material that the resin does not melt!

[NONYA]

There is a 2 part product called Liquid platic,it works great,bonds to everything!

[RodBuster]

drdougrx,

Did you by chance get your gun wet while hunting? Seems there shouldn't be any moisture in the foam. I do know that those screws on the BDL are pretty small diameter, and are probably mild steel. I have seen some rust on some of mine.

Maybe I'll replace them with something in stainless.

NONYA,

Does the liquid plastic add weight? i would like to keep weight down.


Thanks for all the input.

[kyelkhunter3006]

It wasn't moisture in the foam or after the foam was put in the stock that caused the problems with the screws.  The chemicals used in most expanding foams are very corrosive to most types of steel, including stainless. That's one of the reasons that window frames are made from aluminum (besides being easy to form into shape), because the expanding foams are most often used and, in fact, I believe, were first developed to fill the gaps between windows and the frame of the house during window installation.  I should add that once the chemical reaction is complete and the foam dries, the chemicals are inert and longer pose a threat to the metal.

[NONYA]

iT DOES ADD WEIGHT BUT IT DECREASES FELT RECOIL AND MAKESTHE RIFLE FEEL AND SOUND SOLID,THE FOAM STILL FEELS WEAK,i HAVE USED BOTH.

[quickdtoo]

You can achieve the same results by stuffing the stock with foam shipping "peanuts", and they're removable if you want to ever get at the stock bolt, no weight and it deadens hollow stocks very well, a form of recycling, if you will!!

Tim

[BIG Dog454]

using expanding foam around windows will cause the windows to jam, the foam expands and puts pressure on the window frame. So I would question using expanding foam.  They do manke a non-expanding foam that dosent cause that pressure, I would think that if anything I would use that,because I wouldn't want a racked stock.

[tradegun]

I have filled several hollow core stocks on rifles and shotguns with spent (well used) walnut shell tumbling media. It only needs slightly in wieght, however deadens that "HOLLOW" sound very well.
As pointed out prior if you need to remove or tighten a stock simply pour out media. The one point that was brought up earlier however is a good point avoid getting water in stock and if you do dump media ASAP.

[drdougrx]

Hi All,

Nope...never got that one wet (yet!)

I suspect the foam was corrosive....pretty hard or cured now I guess.

[bluebayou]

I have to disagree with the use of expanding foam.  I heard all of these wonder stories and tried it with a Stevens 200.  It sounded hollow and scratchy before the foam.  It sounds hollow and scratchy with the foam.  It didn't do jack for me.  This was the Dupont expanding foam, whatever it is called. 

If you do use it, then fill it slowly but at one time.  I taped around the end of the stock to keep it clean, just in case.  Then used 2" tape to build a dam around the end of the stock.  Once dry, it cut the foam down to size. 

[RodBuster]

The stocks were filled with Great Stuff in layers. it turned out OK. It did help the stock feel a little more rigid, but not as much a had hoped. I then painted the stock with fleck stone paint in a sand color. very happy with the look, and it defintely helped the feel of the stock.

[DDelle338]

   I thought about using the foam in one of my hollow stocks, but then got a better idea. (at least for me it was better) I filled it about 1/4 with RTV, then put a piece of copper pipe filled 3/4 full of sand and capped on both ends. Trying to keep the pipe aligned with the barrel. Then filled the stock the rest of the way up with the RTV. I did this in steps, letting it cure in between. I wanted some more weight because the gun just felt out of balance, to darn muzzle heavy for my taste. My thoughts on the sand filled pipe were that it might smooth-out the recoil some. I think it did, but that's just me, I may just be trying to qualify my harebrain idea.

[bluebayou]

At least you tried to solve the problem.  Too many people accept an "okay" product. 

[papajohn428]

Okay, I'll bite.  What the heck is RTV?

Papajohn

[quickdtoo]

RTV = Room Temperature Vulcanizing

http://www.permatex.com/products/automotive/automotive_gasketing/gasket_makers/Permatex_Sensor-Safe_Blue_RTV_Silicone_Gasket_Maker.htm

http://www.acehardware.com/product/index.jsp?productId=1422866&cp=2568447.2624903.2624913