To solve the problem of the lack of standardized verification projectiles for non-lethal blunt ballistic impacts in China, three equivalent strategies of equal density scaling, equal mass scaling and equal volume scaling were proposed based on NATO SIR-X projectile, and a finite element model of 38mm composite projectile was constructed. Through the impact simulation experiment of rigid wall and human chest target, the multi-dimensional equivalence of the model was verified by the criteria of momentum, kinetic energy, specific kinetic energy, bluntness and viscosity (VCmax). The results show that the equal-mass scaled projectile B is the closest to SIR-X projectile in terms of impact characteristics (mean absolute difference between displacement-time curve ≤1.19 mm) and damage effect (VCmax deviation ≤2.53%), which verifies its feasibility as a domestic standardized test projectile, provides a theoretical basis for the design of composite non-lethal kinetic energy projectiles adapted to the caliber of riot guns in China. The proposed comprehensive evaluation method based on multi-dimensional damage criteria can provide support for the intrinsically safe design of new non-lethal kinetic energy projectiles.