Man I'd send that tube back and get a lighter contour!
Especially if you are going do a lot of walking to hunt with that thing. .338-06 works fine with a 20-24" sporter contour barrel since the recoil isn't punishing. Yours looks 26" plus assuming that is a 22" barrel on the donor. Ideal weight for me is 8-8.5 lbs. all up for the .338-06.
Since it is a budget build I'd buy a Boyd's Classic in walnut to save weight over the laminate.
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