[JrsyJack]

Not to butt in but what was on the sheet? Had it recently ben in the wash with some type of fabric softener. The wet sheet may have trapped moisture against the stock and caused some type of reaction with the grease or whatever is used to treat or seal the grain. Most likely, however, the moisture trapped under the sheet may have simply caused the wood to swell and squeeze the grease out of the now smaller pours (sp?) in the obviously unsealed wood.

[hiredhand]

Not to butt in but what was on the sheet? Had it recently ben in the wash with some type of fabric softener. The wet sheet may have trapped moisture against the stock and caused some type of reaction with the grease or whatever is used to treat or seal the grain. Most likely, however, the moisture trapped under the sheet may have simply caused the wood to swell and squeeze the grease out of the now smaller pours (sp?) in the obviously unsealed wood.

That's a good question! I don't know if there was a fabric softener in the sheet or not. BUT...this "goop" came up even inside the stock...between the receiver and the stock...and left what felt like honey on the gun metal. When we lifted the rifles OUT of their stock, this "stuff" was stuck where the wood had been.

It's probably some little known property of this Yugoslavian rifle grease. :-)