The wood behind the recoil lug is not reenforced. They can split there.
A cross bolt is not a bad idea. The forces of recoil tend to make the sides of the stock flex outward. Thats the force that splits the wood behind the lug.
Its common to relieve a little wood behind the upper tang. Not a bad plan,as the wrist curving down leaves that wood unsupported.
A good plan is to support the wood behind the recoil lug with the forward surface of the mag box, with some epoxy bed. Then epoxy behind the lower tang .Once thats done,the recoil is transferred to the well supported wood behind the trigger guard.
I learned this in a 1960 something GunDigest in an article on stocking Stopping Rifles.
The guard screws are not regular Mauser. I bought a new set for mine long ago from Forster.
Note the guard is a wide,full radius at the front guard screw, Its unique. You cant buy one easily.
Note there is a hole crossdrilled for the pin that is the hinge pin for the floor plate.
If you epoxy bed the guard floorplate in place,even with good release agent,I pulled on the trigger guard to remove the thing from the stock. When it came loose,the plate snapped in two right where that hinge pin created a stress riser. The boss around the front guard screw acts like a dowel pin in the epoxy . Pulling on the trigger guard tries to rock it out. It has to come out as a straight pull.
Its an unusually light receiver,and good for a light hunting rifle. Decades ago,Canjar made me up a trigger, I think you can get one from Timney,but its not the standard 98.
Mine is stamped "Tradewinds Husky 5000" on the barrel. I was able to find scope bases. I started with Weaver but I think it has Leupold weaver type now.
I bought it long enough ago it was $ 135 brand new at the gun store. I also bought a Remington 513 S 22 about the same time for $65. And a new Ithaca SKB Model 100 20 ga SXS for $230 something. 22 Rimfire was about 75 cents a box of 50 and CCI primers were about 75 cents a hundred.
I was buying Hodgdon 4831 bulk for $1.60 a pound.
New GI 30 carbine was 9 cents a round and GI 5,56 was 2 to 3 cents .
My Husky was a 7mm Rem Mag ,the barrel was,IMO,too short for a 7mm Rem.
The guard was broke and the stock repaired. I stripped the receiver from it.
Made the locking lugs full contact. Set it up on a surface grinder and lightly trued all surfaces,including the receiver ring face. Ordered a Lilja 30 cal barrel and an Elliot 30/338 reamer. And a 20oz HiTec Specialties stock.
It wears a Leupold 3,5 to 10x Boone and Crockett scope.
I used ballistic software to predict a 200 gr Nosler Accubond at 2900 fps would align very well with the ranges of the B+C reticle at roughly "Elk Altitude"
It worked!