I have only bedded a few rifles, but I do have nearly 40 years of experience working with epoxies. Five minute epoxy has only a few good characteristics; one, it's available in small quantities and two, it cures quickly. Absolutely every other feature is less desirable than those found in longer setting epoxies. Five minute isn't as resistant to water, every physical property is relatively low including strength and hardness, the viscosity is too low for easy bedding, and it has higher shrinkage.
Actually, when it comes to bedding, the speed of cure is a definite drawback and may be the one thing which will lead to disappointment in a process which otherwise isn't too difficult for the first-time DIY home gunsmith.
Devcon 10110 is the preferred product for bedding. It is superior in every way when compared with 5 minute epoxy, especially when it comes to viscosity. The only drawback is that it comes in 1 pound containers which is way more than you need for one rifle, so the forty buck price might be considered a drawback. A second choice might be JB Weld which is available in several flavors. Use the long setting product filled with steel. It's OK, but a little less viscous than Devcon. However, it's available in relatively small quantities and is much better than any of the 5 minute products.
One last comment. I would say removing the action when the epoxy is partially cured exposes the beginner to potential problems which outweigh the advantages. I prefer to leave the action in the stock until fully cured. A careful cleanup (after the action is settled into the stock but before the epoxy begins to cure) using Q tips and some wooden scrapers made from tongue depressors or Popsicle sticks and plenty of paper towels is well worth the effort. The next day a little trimming in the way of the magazine well, etc. with a Dremmel Tool finishes the job.