They DO shoot high when they get wet (usually about five minutes high) and it is a fair criticism of a rifle which can reasonably expect to be used in a variety of weather. And the author is referring to the 7.62 ones, so knock off all this stuff about the Somme. A combination of oily cartridge plus strong rain WILL run up pressures and people who think they can repeatedly develop something approaching proof pressure without consequences are fooling themselves.

Geez, anyone would think someone had just spat on the flag. Lighten up.