Filling in the stock.

I filled the synthetic stock on my Marlin 60 with play sand. Didn't mix in any glue or anything; just made sure it was topped off. Worked like a charm. Rifle has better balance and is much more stable with off-hand shooting. Didn't do anything for recoil because... well... there wasn't any to begin with.
 
Polyurethane foam. "Great Stuff" (as mentioned by a previous poster) is one brand. Works perfectly. Just tape off the outside of the stock, to prevent any spill over from bonding to the outside of the stock. The poly foam is VERY sticky, so it will permanently bond to the inside of the stock - and won't ever get loose. It will automatically fill all the spaces and voids inside, so you don't have to pack it in, as you would something like Bondo - so it's much easier. The foam will deaden the hollow sound of the stock nicely. It will also make the butt area of the stock much more rigid.

The poly foam is light weight, so it adds little to the stock by itself. You can add additional weight simply by pushing some other material into the foam, such as shot, metal washers.....almost anything. You can easily balance the added weight by not adding it to the rear portion of the butt stock, but rather, further forward. Just apply the foam in "lifts", or layers. In other words, add a small amount of foam into the forward most part of the cavity, then add some weight....then add more foam, etc. etc. It's quite easy.

After the foam is set, simply trim any overflow with a razor blade...and re-install the butt cap or pad. Voila.

I've done a bunch of stocks this way, over the years.
 
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I read the instructions on the "Great Stuff" can and it said that cleanup before setup can be done with acetone, but I used "Break Free Powder Blaster" to clean the application tube and nozzle and it worked fine. It probably contains acetone anyway.
 
Did not work well for me !!!

The foam will deaden the hollow sound of the stock nicely.
Click to expand...
Perhaps it's the difference in stocks but I used Great-Stuf, in one of my in-line hunters and it had very little effect on reducing the sound. I too layered my application and it did fill the stock nicely but that's about it. ..... :(

Be Safe !!!
 
i recently used half inch cpvc filled with 7 shot and capped on both ends.cut it to length and held it dead center while i filled in with spray foam.balanced out really nice and it was fast and easy.also put 3 inch masking tape on the stock for easy clean up.i also shot a bottle of gorilla glue into the shot to keep from rattling no problems so far.it cost me about 10 bucks.
 
I used geat stuff in the rear portion of the stock and epoxy and steel rods in the front. Night and day difference how rigid it is.
 
Regular Great Stuff expands as it cures..... could be bad ju-ju.

They make a "Windows and Doors" formula (blue can) that does not.

Liquid Nails shrinks as it cures.... could also be bad, if used without something for an aggregate .....
 
So I used the great stuff foam. And maybe it needs longer to cure (been about 9 hours) but it didn't get as hard and rigid as I thought it would. It's all still pretty soft and spongy.
 
"So I used the great stuff foam. And maybe it needs longer to cure (been about 9 hours) but it didn't get as hard and rigid as I thought it would. It's all still pretty soft and spongy."

It helps to put a little Viagra in it. :eek:
 
Picher.... nevermind....
On the stock filling, I used 1/2 of a 1lb ankle weight, in the buttstock of my son's Turk Mauser, the new barrel will be a 26 inch Douglas fluted with muzzle break, and I figure it would help balance it out for pointability.:)
 
I'm gonna see if I can dig the foam out of there and find some kind of resin to fill it in with. maybe something I can pour in there. I'm gonna use bondo on the forearm but looks like i would need quite a bit of bondo and stuffing it in there could probably get annoying.
 
So for those interested...

Used loctite epoxy putty to fill in the forearm and it stiffened it up nicely and added a nice bit of weight. Also used the putty to fill in the trigger guard area then epoxied it in place (had to grind some of the putty out to allow proper fitting of the trigger)

All that's left is filling in that hollow butt stock after I finish digging all the foam out. I've had to dig it out little by little. Pry a hardened chunk out, let the still wet foam underneath cure, pry that out etc. Almost got it all out.

I had used loctite instant epoxy to fill in some of the smaller holes in the stock and that worked great hardened nicely didn't shrink. Does anyone know of something liek that I can buy in a bigger quantity than the little tube they sell at walmart? I think it'd work great but can't imagine how many of those little thigns I'd need to fill in even half of the buttstock.
 
Why the heck would you "dig the foam out" after filling the butt with it ? The poly foam is NOT supposed to become rock hard....and that doesn't matter anyway. Filled with the cured foam, the butt stock is much more rigid than before - as rigid as it ever needs to be.

If you insist that it be hard as a rock....I would suggest filling it with concrete. Then, you'll get that "rock hard" feeling you want.....:rolleyes:
 
worms

Adding "real" weight (BB's, lead shot, etc) to the butt only, always makes a longgun feel all out of balance to me, way too whippy and muzzle light.

I have used the foam worms, , couple of handfulls dropped in and tamped flush quited them down well.
 
I actually had some bondo, returned it, and bought a whole bunch of epoxy putty that i used to fill the forearm and trigger guard area. Worked great. Contemplating just using the same stuff on the stock, and I'm going to leave a little space in there for a small survival kit (plus the recoil pad inserts into the stock)
 
Fill

I recently bought a Tikka CTR in .308 . I was preparing to fill the butt stock with cut up memory foam. When I removed the rear plate I discovered that it was already factory filled with dense foam with a plastic honeycomb grid. I don't know if this is Tikka s.o.p. or something that has been recently adopted. Either way I can't make it any better
 
You guys better hope you never have to take the stocks off of your rifles!
If you must fill the stock, do it with something that can be easily removed, otherwise you have Bubba'd up your gun.
 
There's a 2 part epoxy called Magic Sculpt. It's an art product but it sticks to almost anything and it's strong. Once mixed, you work it like clay. The best part is it's non toxic and it has almost no smell. Once cured has a consistency similar to hard wood.

I've used it to repair motorcycle side covers for years and later on I used it in the forearms of a couple plastic stocks to stiffen them up...

Tony
 
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