I got a Brown Precision unfinished stock that came with recoil pad and sling studs installed.
It was a short-action stock for .308 WCF that I reworked in 1990 to go on my 1981-vintage .30-06 M77 Roundtop.
Imbedded some steel cross bolts in the recoil lug area and epoxy bedded the longer-forward action.
Worked very well, 1/2 MOA for 3 shots with 150-gr Remington Bronze Points or handloads.
My bubba heart treasures that rifle still.
The barrel is about 0.555" diam. at 22" muzzle, under barrel band.
A Ruger M77 Mark II .30-06 was 0.560" at 22" muzzle likewise.
That is the same make & chambering of rifle used by the naked guy Glen Villaneuve on LIFE BELOW ZERO.
He used it as a walking stick, etc., took a lickin' and was still tickin', 2013-2019, until he left show.
I think the producers got tired of blurring out his privates during 20-below-zero outdoor bathing etc.
Proof that the tupperware stock is rugged and I will vouch for accuracy of many rifles so stocked.
A Ruger M77 Hawkeye .30-06 was 0.656" diam. at 23.5" length where threading of muzzle started:
That last one is almost a number 4 sporter contour, a bare minimum, IMHO, for .458-cal if shortened to 20" from 24".
The first two are about like number 1 sporter contours, featherweights.
All the Ruger M77 rifles in 7mm RemMag I have seen had similar contours as on the .30-06 rifles but lengthened to 24".
I have two take-off 7mm barrels in storage from Ruger M77s rebarreled to .257 WbyMag and .416 Taylor.
They were skinny.