Re: Bedding Sendaro H-S stocks
If you can do wood, you can do H-S. I'll second the Steel bed recommendation (officially Devcon 10110 Plastic Steel Putty). I don't drill holes in mine, as I feel the stock surface will adhere to the epoxy well (and haven't had any trouble doing it as such), but I can't imagine it would hurt (provided you didn't get to crazy with the drill).
I assume your planning on floating the barrel?
Empirical results rule!