Hornady MonoFlex bullets in .45 Caliber (.458-inch), 250 grains (brand part no. 45010), are a monolithic bullet with a soft, flexible polymer tip specifically designed to be safe in tubular-magazine lever guns, bullets built for hunting with tubular-magazine lever-action rifles. Sold 50 per box, these are component bullets for handloaders who want to build their own .45 Caliber (.458-inch) ammunition rather than buy factory loads.

Key Specifications

• .45 Caliber (.458-inch) caliber, matching this bullet to that bore diameter.
• 250 grains, a weight suited to hunting with tubular-magazine lever-action rifles.
• Built on Hornady’s MonoFlex platform: a monolithic bullet with a soft, flexible polymer tip specifically designed to be safe in tubular-magazine lever guns.
• The flexible tip is designed so recoil-driven contact with the primer ahead of it in a tube magazine can’t set off a round, unlike a rigid polymer tip.
• Monolithic (solid, non-lead-core) construction is built to hold together for deep penetration on big game.
• Well suited to lever-action cartridges such as .45-70 Government that load from a tubular magazine.
• The tip still promotes expansion on impact despite being soft enough for magazine safety.
• Lead-free, all-copper construction meets game-meat and range regulations in areas that restrict lead projectiles.

Frequently Asked Questions

Are cases, primers, or powder included? No. These are component bullets only — you’ll supply your own brass, primers, and powder as part of handloading.

What is the MonoFlex bullet built for? Hornady’s MonoFlex line is built for hunting with tubular-magazine lever-action rifles.

Why does the tip matter for lever-action rifles? A tubular magazine stacks cartridges nose-to-primer. MonoFlex’s soft, flexible tip is designed so recoil can’t detonate the primer of the round ahead of it, unlike a rigid polymer-tip bullet.

Buy Hornady MonoFlex .45 Caliber (.458-inch) 250gr Bullets

Handloaders building precision .45 Caliber (.458-inch) ammunition should look at Hornady’s MonoFlex bullets for consistent, repeatable performance. Order them from Hornady and browse the rest of our reloading bullets from a Lubbock, Texas gun shop for fast, insured shipping.