SinterFire Special Duty (SD) ammunition is a specialized centerfire handgun load engineered for home defense and high-stakes personal protection. Featuring the .38 Special caliber with a 110 gr projectile, this round utilizes a lead-free frangible hollow point (LFHP) designed to dump energy rapidly upon impact. The frangible nature of the bullet significantly reduces the risk of over-penetration and dangerous ricochets, as the projectile is designed to break apart upon striking hard surfaces. Each box contains 20 rounds of high-performance ammunition seated in quality brass casings. This load is an ideal choice for shooters seeking maximum terminal performance and safety in close-quarter defensive environments. Safety Note Always verify your firearm is specifically chambered for .38 Special. While frangible ammunition is designed to break apart on hard surfaces, it still possesses lethal force; always follow safe firearm handling practices and be certain of your target and what is behind it.