I suggest shoot it and see how it goes.

Many years ago I had a Lithgowicon No.1MkIII* manufactured in 1919 still in its original wood. It had a warp very similar to this in the forend when I bought it, unbeknownst to me.

I found upon shooting it that the pressure it exerted on the right side of the barrel near the muzzle caused the rifle to throw shots left to the order of about 1 inch at 25 metres. However despite throwing them to the left the thing strung 10 rounds through a ragged 0.5 inch hole with one flier at this range the first time I shot it.

I duly drifted the sight and stretched the rifles legs finding it to be an excellent shooter.

I pondered trying to straighten the wood in the long term.

However I ended up deciding that even though the aesthetics of having a sight drifted all the way over to the left are unpleasant it was outweighed by how well the rifle shot and elected not to mess around with the wood.