Hornady Bore Driver ELD-X 45 Caliber/.449in 280gr Muzzleloader Bullets - 12 Pack - Fast and easy to load, the Bore Driver delivers the ultimate in muzzleloader performance. At the heart of the system is a polymer base (not a sabot) that seals the bore to deliver maximum energy transfer and accuracy. Atop the base is an ELDX bullet, featuring a rugged gilding metal jacket coupled with polymer tip technology and an InterLock ring that delivers maximum lethality. When you have one shot this muzzleloader season, make it count and use the best - Hornady Bore Driver! FEATURES: Loads Fast and Easy: Without a sabot, the Bore Driver seats quickly and easily for shotaftershot performance. Maximum Lethality: ELDX bullets incorporate an InterLock ring that helps retain bullet weight upon impact that when coupled with a tough copper alloy jacket, delivers deep penetration and expansion for the ultimate in ongame lethality. Polymer Tip: Upon impact, the polymer tip drives into the lead core like a wedge, initiating lightningfast, yet controlled expansion. Performanceboosting Base: The polymer base features a post that fits into the bottom of the bullet. This post swells in diameter at ignition for better torque engagement from inside the bullet and the centering petals grip the bullet's boattail while the skirt engages the rifling to maximize energy transmission. COLORADO COMPLIANT: Hunters in Colorado can rest assured, this projectile is approved for use in Colorado.