Trigger guard looks like Winchester 70???

[Cooeyrepair]

Has the round trap door release button on the trigger guard, but measures 8 1/8 inches between hole centres?

 

[Hitzy]

Dunno, seems too long for any M70.
Maybe an original Ruger M77 long action, pre-MK2?
Some odd magnum M98 maybe?

 

[FatCatsDad]

My Mod. 70 has a 2 piece bottom metal.
Meaning it has 3 screws that hold it on.

 

[9.3mauser]

That looks like a Husqvarna 1640.

 

[pathfinder76]

That’s not model 70 bottom metal

 

[Lodi]

Looks like an earlier Mk V Weatherby, but I don't recall the hole spacing.