The SIM-X SUBMASS™ core(s) are approximately 80% – 90% lighter than lead core ammunition, but with equal or greater impact and tensile strength. Combined with muzzle velocities nearly twice that of pistol and carbine rounds these SUBMASS™ projectiles are light weight but have heavy impact. All of this is accomplished without firearm modification or the need for +P pressures.
SIM-X proprietary synthetic core is a heavy-duty material that behaves as a solid but has the characteristics of a non-Newtonian fluid. The result is a lightweight, SUBMASS™ projectile that achieves a better gas seal in the bore. This translates into very high velocities combined with perfect control over penetration and expansion, cycling the firearm without the need for weapon modification or +P pressures.
SUBMASS™ core technology yields an additional important benefit, namely weight savings. 50 rounds of SIM-X .45 ACP are approximately 53% lighter than the same quantity of LEAD 230 grain .45 ACP. The advantages of lighter ammo are obvious, but here’s what our friends in the military have to say about it.