Hopefully I'm in the correct forum for this subject. And please forgive me if this topic has been covered before. My feeble eyeballs have not spotted a previous discussion.
A current cowboy action shooter friend of mine, also a retired police officer, as well as a guy who, like me, spends a fair amount of time with his family bashing along very, very rough Colorado 4WD off-road routes visiting remote mountain mining ghost towns and creeping along abandoned railroad grades.Then hitting about 70 m.p.h. with the CJ 7 Jeep for several hours on Sunday driving back home via paved highways.
He states that the gunpowder in the interior of shotgun shells, rifle or handgun cartridges, in fact anything containing gunpowder, eventually grinds against itself while bouncing around in a vehicle, and the grinding action will eventually effect and lessen performance. He said he heard about it from a long-time officer who was about to retire just as my friend was starting with a big city force several decades back. So he changes ammo in the firearms he hauls along on the mountain outings after every trip. I realize he's not doing any harm, and he's probably out-smarting me!
I rotate my ammo maybe every 6 weeks or so and use the rounds I've been carrying in the holster or in a vehicle for target practice. It's a habit I picked up years ago. But I've been curious about my friend's statements.
Can you really beat ammo, or actually it's powder, to death by vehicle bounce? It seem's like it would take a very long time.
Thanks in advance.