BudsGunShop.com - boat tail

Yes, "These 5.56 cartridges push a 62 grain projectile designed with a boat tail, lead core, and a special steel “penetrator” tip. The specified muzzle velocity of M855 ammo is roughly 3,020 feet per second. The primer and case mouth are chemically sealed, just like M193 ammunition."

yes they are a boat tail bullet

Tristan, yes Sir the bullet is a Boat Tail design. Pictured here : https://botach.com/winchester-m855-5-56mm-62gr-green-tip-ammunition-150rds/