Last reviewed: 2026-04-18 by Jake Terry, FFL07/SOT3, NRA-certified firearms instructor.
Hornady Custom 44 Magnum ammo delivers a 300-grain XTP jacketed hollow point at 1150 feet per second and 881 foot-pounds of muzzle energy — a hunting-weight load for medium game at handgun ranges. The 44 Remington Magnum cartridge has anchored deer, hogs, and black bear since 1956; this particular load pairs that legacy with modern bullet engineering from Hornady, a manufacturer known for precision swaged cores and controlled-expansion designs. You chamber this round in revolvers with 4-inch to 10-inch barrels or lever-action carbines, expecting consistent expansion from 900 fps to over 1200 fps across platforms.
Built for the Box
The XTP (eXtreme Terminal Performance) bullet anchors this load’s reputation. Six serrations divide the copper jacket into symmetrical sections — engineering that allows the bullet to open reliably at lower velocities without fragmenting at magnum speeds. The swaged lead core locks to the drawn jacket via a mid-body cannelure, preventing core-jacket separation on impact with bone or heavy tissue. Brass cases carry Boxer primers and are reloadable; each case headstamps with Hornady’s lot code for tracking. The factory specifies non-corrosive propellant and primers, so you store these rounds in standard cool-dry conditions without concern for moisture-accelerated degradation. Country of origin: United States.
Specs at a Glance
| Spec | Value |
|---|---|
| Caliber | 44 Remington Magnum |
| Bullet weight | 300 grains |
| Bullet type | Jacketed Hollow Point (Hornady XTP) |
| Muzzle velocity | 1150 fps |
| Muzzle energy | 881 ft-lbs |
| Rounds/box | 20 |
| Case | Brass |
| Primer | Boxer |
| Corrosive | No |
| Reloadable | Yes |
| Lead-free | No |
| Intended use | Hunting |
| Manufacturer | Hornady |
This 300-grain load sits at the heavy end of the 44 Magnum spectrum — heavier bullets trade velocity for penetration and momentum retention through hide and bone. Hunters running 6-inch or 7.5-inch revolvers see velocity dips of 50-75 fps compared to the factory spec, which references a test barrel; carbine-length barrels add 100-150 fps. For additional 44 Magnum ammo options across grain weights and bullet profiles, browse our in-stock inventory.
Safe Handling & Compliance
Federal law requires purchasers to be at least 18 years old for rifle and shotgun ammunition, and at least 21 for handgun ammunition. Ammunition cannot be shipped to certain states, counties, and cities — review our ammunition shipping restrictions before ordering. Store ammunition in a cool, dry location away from heat sources and out of reach of unauthorized users.
- Four rules of firearm safety apply every time you handle a loaded revolver or carbine — treat every gun as loaded, finger off the trigger until sights are on target, know your backstop.
- Check state and local hunting regulations for caliber restrictions, bullet-type mandates (some jurisdictions prohibit hollow points for game), and season dates before heading afield.
- This load contains lead components. Per California Proposition 65, lead exposure can cause cancer and reproductive harm. Wash hands after handling; do not eat, drink, or smoke while shooting. Sweep up spent brass and dispose of primers according to local hazmat guidelines.
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