When I bed my rifles I don’t use bedding screws or blocks, instead I use the actual bottom metal and the action screws.
While I prefer this method, I typically end up with bedding compound stuck inside the stocks aluminum pillars in.
Note the Marine-tex in the pillars in the stock above.
Normally, I’ll chase the holes with a drill or reamer to clear them, however, I found another technique that works well.
I thread one of the action screws I used to during the bedding process into the epoxy that is still in the pillar and tap the screw with a hammer handle.
The hardened epoxy plus slides out. Done. No drilling, no reamers.
A quick caveat, this will only work if the top and bottom edges of the epoxy plug aren’t touching the bedding. If it is, the bedding can become chipped.