Properly executed, bedding does one thing; it provides a tension free register for the barreled action to sit in that is inert to changes in environmental conditions.
It will not make a sow's ear into a silk purse. If a gun shoots great, it'll make it exceptional, if it's good, it might make it great, etc.
A **** will only become a slightly more polished ****.
There's an infinite number of opinions on how to do it, but the above is pretty nuts on. I've been building guns for 13 years now and every rifle I've built was bedded.
The only exception to the above is rimfire. They behave a little differently and significant gains can be achieved with a good pillar bedding job.
If your going to go with an H/S stock then just bolt it and go. The alloy block makes it very, very difficult to bed with any kind of resin. Aluminum oxidizes almost instantly after its machined and this does not lend itself well to epoxy bonding to it. Unless your going to be really invasive you'll end up with a skin layer that'll more than likely chip and flake away over time.
Here's a link to another site that I frequent. Photos of my bedding/stock work are posted. Judge for yourself. (NesikaChad is my screen name on other forums)
http://www.longrangehunting.com/forums/f37/bedding-question-52589/#post359568
Good luck.
C