glass bedding?

[Jack]

That's a difficult question to answer with certainty. Glass bedding might very well help- or not.
A simple trick you might try first is to put a piece of business card stock between the barrel and the forend, near the forend tip. Do it in such a way as to add a bit of up pressure between the barrel and forend. Then shoot a group and see what you get.
Often, light contour barrels like yours do better with a bit of up pressure at the forend tip.
At any rate, that's a simple thing to try.
I would say in general that glass bedding is beneficial. I just can't say for sure it will work on your individual rifles.