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November 7, 2015
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Chuck-
I have restocked a couple of M70’s and replacement stocks generally have a generous recess for the recoil lug and bedding the lug to the stock is usually necessary. Some like to bed the rear tang as well. Factory stocks generally have a tighter fit. I saw a 2009 vintage Super Grade that had a bead of what looked like hot glue across the recoil lug recess. 
I generally try “tight” on the front and rear screws, snug on the middle, apparently I follow the same “conventional wisdom” as Lou. The front and rear screws pull the barreled action into the stock, I only tighten the middle screw enough to keep it from vibrating out. Overtightening the front and rear screws compresses and damages the wood between the screw and the barreled action, IMHO. The new “conventional wisdom” favors pillar bedding but that has no place in a collector firearm like your Model 70. On rifles like my BACO M70 Super Grade the middle screw has been omitted.
Mike
I think I have finished the bullet seating depth tests. At first I thought .010″ from the lands was going to work out the best. But not so.
After firing these 4 times here is the average of the groups.
.005″ from the lands 2.106″
.010″ 1.672″
.015″ 1.138″
.020″ 2.142″
.025″ 1.651″
Here is the latest target. I am going to load 50 rounds and test what happens when I change the screw setting in the forearm that goes into the band on the barrel. This should change the barrel harmonics and possibly the group size and point of impact.
If this was my target rifle I would load some seated at .013″, .014″, .016″ and .017″ to find how wide the bullet seating node is and then seat in the middle of the node. Often after this I’d do a fine powder test to make sure I’m still in the middle of the powder node. But, and this is a big but, this barrel will never shoot sub 1/2 MOA groups consistently. There is a possibility that it may shoot better with a 130 gr. bullet or different powder or primer.
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