Woke up at 3:00 this morning thinking about an expansion test and decided I probably wasn't going to get much sleep until I had done something about it.
I like milk jugs for this but after searching all the hiding places there were not enough jugs of any kind to make that work.
Not to be deterred, I did a search here and came across Roy's with an unnamed media. Hmmmm
The farm supply store will be open today
A cardboard box 5 gallons of water an two bags of floor-dri and I was in business!
I layered saturated floor-dri in plastic bags with cardboard separators about every 4"
This was placed at 600yds and 3 shots were fired with an esimated impact velocity of 2200-2250fps.
The box was about 20" deep and the bullet jackets were recovered in the middle of the last bag.
The first pic is the last cardboard separator and the entrance holes.
The saturated media
separators at each depth
and the jacket fragments found in the last bag at about 18"