I have a Remington 710 that I want to free float the barrel on. I also want to add epoxy to fill the open areas of the stock to add some rigidness to it. Which epoxy should I opt for? I am thinking I will need something that has good structural qualities but will also be able to handle the possible high temps from the barrel. I will also need more epoxy than you average 5oz tube of JB Weld. I have found a structural epoxy called t-88 but am concerned about the high temp issue. Before you say sell it and get a 700, well that's just not going to happen.

What we used for years was Brownells Acraglas. It may cost a little bit more but it is designed to strengthen the stock not just be a filler.

We used Acragel Lots easier than Acriglas. Many years ago. Bisonite works good also

Just make sure you use lots of releasing agent...

Good suggestions above. I have used acraglas and acragel and prefer the gel as it is easier to work with. Cannot express enough on the release agent comment you do not want to epoxy your action into the stock

Thanks for seconding the release agent comment, I was out in my shop and saw my can of it. I came back to update my post.
I have never used the gel but will have to give it a try.

acraglas for wood, devcon for plastic, marine tex for fiberglass composite stocks

Thanks everyone. I am going to go with the acragel kit.