Mit: Since you're starting with a forend already opened for the H barrel, why not try setting it up conventionally, as a baseline, before going on to this epoxy approach? The sort of precision being shown and talked about here is all achievable with standard techniques. If you were unhappy with the results you could then proceed with the epoxy and make a bit of an interesting experiment out of it. I try to keep an open mind but I've never seen much that would suggest this epoxy bedding is either a sure-fire path to accuracy or a way to salvage decrepit forends. On the other hand, I'd be interested in seeing a well documented before and after test. My own H barrel is fully floated forward of the barrel reinforce and I took the somewhat unusual approach (with a walnut forend) of using copper blocks on the all important draws. It allows, via thin shims behind the blocks, for fine tuning of the contact on each side and it has stood the test of several hundred rounds. Good luck with whatever you decide to do and be sure to show us the results. Regards.
Ridolpho