Just a couple of thoughts.

If the lever is truely full open like in the picture -db- posted,,and the breech bolt is still only 1/2 way open, there would be some disconnect betw the lever and the bolt,,and that isn't supposed to be. Replacement lever, breech bolt or link parts are expensive on the 99 (especially earlier mfg.)

You mention it has replacement wood on the gun.
If the lever only opens about 1/2 the distance as in the picture, and the bolt the same,,the new wood could be interfering with the internal operation. It may need some more inletting or perhaps the person that installed the wood glass bedded it and the bedding material is interfering inside.

The butt stock is a thru-bolt affair and an easy one to remove and work on.
I think the thru-bolt can interfere with the lever if turned in too far. Something to check I guess. Just thinking about the replacement stock again.
Sometimes they bore the stock bolt hole shoulder a little too deep on after market replacement wood.



$110 is an awfully good price for a 99 in 300Sav.
Check all the other things out on the rifle too before jumping in.