I prefer Marine Tex with Brownell's Accra Release Spray release agent. Over the years, I have seen more guys have problems with Wax than any other release agent. Why, you ask. It is hard to get wax down in the lug area in the action, and in very tiny places with small cracks, screw holes, screw heads, etc. With Brownell's Accra Release, you spray on brake cleaner first(degrease the action), let it dissipate, then give two coats of the Accra Release...you will NEVER have a problem, NEVER.
Next, wash off the Accra Release off the Action with the brake cleaner.
PS. I spray the lug area and chamber also in case bedding compound goes up through the front action screw hole. Then, if bedding compound gets in the lug area, it comes out very, very easy.
The only rifle I ever stuck was with using Pam spray that you spray on cooking pans, and I am not the only one.
Biggest mistakes that new guys make are:
1. not de greasing parts prior to applying Release agent(brake cleaner is cheap, best to degrease twice
2. use of wax, leads to incomplete coverage where a liquid under pressure can squeeze into.
3. trying to use both ends of a Q tip to remove excess bedding compound as the action and
stock is bolted together, leads to getting bedding compound all over your hands and stock. Use one end of the Q tip and throw it away. Also, does not hurt a thing to tape up the entire stock if you are messy. If you do tape up the entire stock, if bedding compound gets up under the tape around the edges of the action, you are going to have a very ugly finished job.
4. Not degreasing and coating of stock screws, two coats
5. Brownells sells some modeling clay for bedding guns, it will not dry up like Play Dough, and I have found it very useful in keeping bedding material out of areas of a stock that I want to keep "clean".
I have helped a lot of friends bed their first guns over the years. There have been so many problems with the use of Wax as a release agent, If and he wants to use wax or PAM, I will NOT help him. Why you ask. Well, when the guy pulls the gun apart, and part of the stock is glued to the action, guess who gets blamed? When bedding material gets in to hard to access places, and they have to pull the barrel off or work for hours with a dental pick, they loose confidence in bedding a gun. Wax is cheap, and when you go to bedding a gun for the first time, it is not a time to be cheap. So,use the Brownell's Accra Release and use any kind of bedding material you want. Don't forget to degrease the action and screws so the release agent can stick to the metal.
There is a paint on Accra release also, but I like the spray much better.
R.W. Hart sells a bedding material called Bisonite. This is perhaps one of the very toughest materials to bed with, but you have to weigh the hardner on your scales using a little piece of tin foil. I think that the Bisonite is tougher than Devcon Steel.
Devcon looks better than a Marine Tex and Bisonite job. Devcon is more expensive.
A lot of guys use JB Weld, I have used it on some of my guns when I just wanted to bed the recoil lug, and it is very good for this purpose.