Moisture is the biggest problem here. That is how neighbor's bricks "exploded" when hit by lightning running along chain link fence. We were finding pieces up to 20 ft away from the house.
Have you had any storms lately?
"A well regulated Militia, being necessary to the security of a free State, the right of the people to keep and bear Arms, shall not be infringed."
Life Member NRA
Life Member NAHC
Former President of the ECPT (Eifel Combat Pistol Team)