Fully understanding that energy is the square of velocity times mass, this is the lightest bullet I offer for use AR-15 and is capable of the highest velocity. This bullet is hand made from pure copper strip into a custom jacket and a hybrid core consisting of 99.9% lead and 0.1% polymer to achieve a weight reduction of 12.5% from its 200 grain brother yet keeping the 200's length. Built to stand up to the rigors of auto-loading with sturdy construction yet yield impressive expansion at typical .375 SOCOM velocities. Demand for my bullets has increased dramatically and with this being the most difficult to make, lengthy delays of 3 to 6 months can be expected depending on where in my production your order is received. I hope to post pictures soon!