I had the action of my mod 70 in 375 H&H glass bedded before we went to Africa. Got back the end of august and finally got around to cleaning the guns. When I took the 375 out of the stock several pieces of bedding material fell out. It all came from the side of the stock by the recoil lug. The bedding on the bottom side of the stock (where the receiver rests) appears to be solid. The rifle has seen about 300 rounds since the bedding was done.

Questions
Would pressures in the plane cause this?
If not, what would cause this?
Should I be worried about it?

How thick were the flakes of bedding that came out?

Sounds like it might have been too thin (maybe enough wood wasn't removed.)

Or the mixture might not have been correct, i.e.: too brittle.

Without seeing it, those are my best guesses.

Thanks for the reply new guy.
Both pieces that came off are .006 thick, 1.2 to 1.3†long and .4†tall.

Could be oily wood when bedded, or moisture in the wood under the bedding.

If the wood isn't roughed up prior to bedding the epoxy doesn't get enough purchase and will come off. However, from your description I doubt you'll notice any adverse effects, but it certainly can be redone.

Dick, Epoxy does not adhere well to old epoxy so make sure to chemically clean the old bedding with MEK or lacquer thinner. The usual safety disclaimers regarding eyes, lungs, stock finish, etc. apply here. When roughing up the surfaces make lots of small holes with bottoms larger than tops using small rotary ball file. They act like dovetails to lock the new bedding to the old.
Mike

The area where the bedding came out is probably not that critical. It would only be important if the action was so sloppy in the inletting that you needed the lateral support. Since the bedding is still solid on the bottom of the action and around the recoil lug, I would ignore it.

I find the practice of removing wood from the sides of the inletting, to allow a thicker coat of 'glass, carries more risks than rewards. Cosmetically, you don't want a line of 'glass showing if you can avoid it.