Don't bed the tang. Make sure the tang is free floated. I usually bed right over the top of the rear pillar and thats it. Drill some 1/8" shallow holes where you are bedding to give the compound somewhere to form a mechanical lock with the stock. As far as the lug goes I tape the edges and that's it. I personally don't bed any part under the barrel. With the nut I used plumbers putty to fill in the notches. If you can remove the mag box if it's a SF and it makes for an easier job.
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