I just went to the local hobby shop and bought the 2 part epoxy glue that comes in the plastic bottles. I stayed away from the "super fast" or 5 minute setting type stuff. The fast cure stuff gets brittle and sets up before it has a chance to "seep in" to the gaps between the head and the handle. I buy my epoxy and "crazy glue" at the hobby shop instead of the home depot or super stores because you get more product for the $$ and the hobby shop is locally owned, the big box stores are not.
This is what I used on at least three handles (axes, mauls, hatchets) and has held up for 3 seasons on my maul:
Bob Smith Industries SLOW-CURE 30 Minute Epoxy (9oz) [BSI206] | Glue, Oil & Cleaners - A Main Hobbies
Again, the above was purchased from my local hobby shop. Even though it says "30 minute epoxy", it does not fully cure for 24 hours (at least). It is best to let it set up for 48 hours at room temp of about 70 degrees. The colder the temp, the longer the fully cured time. "fully cured" means it does not reach it's full strength till "fully cured" or till the 2 part reaction (setting, bonding, curing chemical reaction, whatever) is complete.
Also, I did a little search and found this:
Devcon 35345 1 Oz Clear 2 Ton Two Part Epoxy: Sealants, Fillers & Adhesives : Walmart.com
Hardman Epoxy | Urethane | Silicone | Epoxy adhesive | 04001
Woodworker.com: Structural Epoxy Adhesive Is Gap Filling And Waterproof, T-88 Epoxy 12pt adhesive&searchmode=2
The thing is (and I learned this the hard way), the fast setting stuff gets brittle after awhile. Not something you want with an axe or maul head. When I was just searching for a link to the glue that I used, I found out that there is such a thing as "impact resistant" glue/epoxy, so I provided the links.
Also, unrelated, but a little nice to know information on glue (from past experience with railroad model building): You can ad a little paint to epoxy to change the color (just mix it in to the resin before mixing the hardner), or powder like baby powder, printer toner powder (to make it black) or baking soda to make it thicker. It probably weakens the epoxy a little, but if cosmetics are what your looking for anyways or like gap filling, who cares about strength.
Also nice to know info, when using crazy glue, if you need it to set up instantly, or to fill gaps, or to build up/fill a hole, put the crazy glue on, join pieces together, and then sprinkle baking soda on it. Instant set up of the crazy glue and you can repeat as many times you want to "build up" a surface or fill a gap. Works great for a quick fix on something.
Lastly, JB weld is good stuff for what it is intended for, but it is pretty thick and sets real slow. If you warm it up with a heat gun or hair dryer after you mix it, it will flow or run like pancake sryup. Helps when you need it to "run down" into gaps or whatever. The heat will also make it set up alot faster. Just remember to heat the parts you are glueing and not just the JB weld. Not sure how it affects the strength.
Anyway, more info than you asked for, but hope it helps. KD