What to fill hollow butt with.
I have a 12ga Stevens 107B SS shotgun with the Tenite plastic stock. I'd like to fill it to make it solid and add a little weight. Mainly to reenforce it against cracking. I don't think expanding foam will do much. I trimmed the barrel to 19" and it's very compact especially when broken in two. Snaps back together in seconds. Thanks for any suggestions.
Dear Lord...I haven't spewed tea out my nose like this in a long time! Man, that didn't feel good! And now I've got to clean my keyboard and monitor!
I swear, skimming down the New Posts, right after your "What to fill hollow butt with" was "recommend me a grease".
If I had a plastic stock and I wanted to do what you're wanting to do, I'd probably consider filling it with an epoxy compound. Either any commercially available conventional epoxy or what they call in the electronics world an "epoxy potting compound".
An epoxy potting compound is a low-viscosity epoxy that's used to fill in the body of certain electrical connectors after the wiring is connected to the pins.
Epoxy potting compounds can be expensive, but you don't have to pay out the nose if you look around. You can buy epoxy potting compounds fairly cheaply at a website like mouser:
http://www.mouser.com/Search/Refine.aspx?Keyword=epoxy+potting
Mouser has epoxy potting compounds in 12 ounce sizes for the low 30 dollar range. When you consider how much it would cost you to buy the equivalent amount of epoxy by smaller tubes at your local Walmart or Lowes, it's probably a bit cheaper.
An epoxy potting compound would be very good for pouring into the stock because of it's low viscosity. It pours very easily and will fill cracks and voids much easier.
A few things here:
You've probably not mixed epoxy in large amounts...probably only small dabs for various projects. When mixing larger amounts there are two things you need to be concerned with:
1. You need to make sure you mix the epoxy components very well. Don't skimp on this. If you don't mix the epoxy thoroughly, it'll never set properly and you'll have a mess to clean up.
2. Epoxy doesn't "dry"...it "sets" as the result of a chemical reaction when you mix the hardener into. This chemical reaction generates heat. Mixing a large amount of epoxy can generate enough heat to feel very uncomfortable. It
probably won't be enough to melt the plastic stock, but you should still be careful.
3. I said epoxy potting compounds are low-viscosity. And I mean THIN. If there are cracks or holes in the stock, you want them sealed or the epoxy will run right out those areas. Mask off or plug as required.
4. Mix a sample batch to see how well it turns out. Most working life for potting compounds is about an hour at 70F. As you get close to that time, the epoxy will rapidly start to set. So mix a batch in a small paper cup for several minutes. (During one critical electronic connector job, I mixed the potting compound for 15 minutes to ensure it was thoroughly mixed, then monitored it to see how long it took to set so I'd know what the working time was. I'd suggest you do this, too.)
NOW, all that said...have you considered simply buying a replacement stock? They're not that expensive. The epoxy you will need will likely run you a minimum of $40, depending on where you source it and how much you need. A new wood stock will run you $65 at a site like this:
http://www.boydsgunstocks.com/ProductDetail/4D2711815117