I would like to use some of these pictures in another forum if I could and make a thread about the stuff you have found.
I would be really careful with the PAK 38 round.
A group of US soldiers went to a range at an army base in the US and one of them picked up a shot bazooka round from WW2. He took it back over to the motorpool area and threw it to one of the other soldiers in his squad. The guy didn't catch it, and when it hit the ground it detonated and killed 2 of them and wounded several others. I went out to the range about a year after that and there were bazooka rounds and chains of machine gun ammo sticking out of the dirt.
I think at the end of every machine gun belt were several red tracer rounds to let the operators know they were nearing the end of the belt.