I personally have bever shot a v-block bedded action. I would recommend that if you do go with the milled out aluminum that you do not heat treat it. It will definately distort. maybe only not sure how much. maybe only .002 of an inch in straightnes maybe totally warped. Hard to say. I would also talk to the heat treater and see if he can give you any type of tolerance that he can hold. I would say if he can guarantee straightness of plus or minus say .010 then go for it. I would personally go with resin. Much simpler in my opinion. It is what I know and am comfortable with. Ultimately it is what you feel is best for you and your demands.
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