The 40 / 10MM Caliber 170 grain Flat Point Non-Lube Groove is sized to .401″ with an OAL of .614″. It was cast from certified 92‑6‑2 lead alloy and coated in ACME’s red Hi‑Tek Supercoat. The non-lube groove (NLG) bullet profile has a longer driving band and may result in greater accuracy.