Try again when the conditions are good and let us know how it works.
I haven't had the stock off the action between the shoots. There is clearance in the screw holes. There is no clearance around any part of the recoil lug. Should there be? Everything in there is clean and dry.
Thanks
Some people seem reluctant to ever take a bedded rifle out of its stock. I think this is a mistake, I think you should take the action out any time you need to - for example to dry it after you've been shooting in the rain, to adjust the trigger, to give it a through cleaning, or just to make sure there isn't anything wrong (e.g. bore solvent between action and bedding).
Sharp edges of the action can "shave" tiny little pieces of bedding material. Oftentimes the thing to do is to round off any sharp bits on the action that might do this, either before or after bedding it.
If any small bits of shaved bedding material or other dirt get trapped between the bottom of the recoil lug and the bedding material, it can hold the lug up - so that instead of the entire action contacting the bedding as intended, the recoil lug is the first to take up load.
One way to deal with this is to make sure that the bottom of the recoil lug slot in the bedding is clean before you reinstall the action - scrape it clear with a jeweller's screwdriver.
Another way is to put a couple of layers of masking tape on the bottom of the recoil lug when you bed the rifle, then remove the masking tape for the lug and/or scrape it off from the bottom of the bedding slot. That way you have designed in a little gap there, if any gunk gets in there is room for it to go. Since you didn't do this when you bedded your rifle (that's OK), do make sure that the recoil lug slot is scrupulously clean. And/or you could grind/file five or ten thou off the bottom of your recoil lugg.