Buckstix-
Here's a photo that shows Jack Lott working on what's probably your rifle. It is a scan from his article, "The Bolt Action Stopper Stock", in Gun Digest, #38, 1984.
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It appears to me that this is your rifle, judging from the front site with the forward-pivoting cover, the mount for the rear sight, front sling attachment, ebony forend tip (not really clear in the scan), etc.

The "slot" to which the caption refers is the cut that some gun builders make in the stock to clear the bolt handle. The article is adamant that the slot may weaken the stock leading to breakage under heavy recoil.

On page 194, what also appears to be your rifle is shown in side view with a selection of other heavy rifles.
--Bob