Two years ago when I first joined the IAA, one of my very first forum posts was a question regarding “Onslaught” ammo and what it was. I had one rd of it which appeared to be a flat lead disc projectile flush with the case mouth of a brass 357 case with a Midway headstamp. Last April at SLICS I had the good fortune to find an original & full box of the Onslaught ammo, and so here now is all the info and photos on it:
Packaged 12 to a case in MTM plastic cases.
9 similar lead disc projectiles stacked tightly & flush with case mouth.
Package label shows 9 impact marks on the right side of the label
Package label shows “Ammo Exchange” as the company - Anbody know more on that?
Each projectile weighs between 17gr - 18.5gr and appears perfectly similar.