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This document describes methods for measuring dynamic forces, pressures, and projectile fragment distribution patterns during an impact between a soft or frangible projectile and a rigid flat inclined surface. It also describes the hardware, setup, and instrumentation required. In this test method, a soft body projectile impacts a rigid plate inclined at a specified angle to the direction of flight. The rigid target plate is backed up by a rigid structure, and sandwiched between the plate and the structure are force sensors to record reaction loads. Optionally, pressure transducers may be embedded in the target plate to record the pressure-time history of the impact. The target plate shall be sufficiently large so that the projectile flows across the surface without passing behind the plane of the plate impact surface, therefore capturing all of the impact load.