The 6.5-284 Norma is a centerfire rifle cartridge standardised by SAAMI in ANSI/SAAMI Z299.4. SAAMI sets its maximum average pressure at 58,000 psi. This guide sets out SAAMI’s published reference velocity for each bullet weight, computes the muzzle energy each one carries, and compares the 6.5-284 Norma with the 6.5 Creedmoor on the same basis.
6.5-284 Norma ballistics chart: SAAMI reference data
SAAMI publishes one nominal mean instrumental velocity for each reference bullet weight, measured at 15 feet from the standard test barrel. It does not publish energy, so the ft-lb column is computed. Where SAAMI lists more than one velocity for a weight, both ends of the span are shown.
Scroll the table sideways for the remaining columns.
| Bullet weight | Reference velocity | Computed muzzle energy |
|---|---|---|
| 130 gr | 2,900 fps | 2,427 ft-lb |
What the numbers mean for a shot
SAAMI lists a single reference bullet weight for the 6.5-284 Norma: 130 grains, listed at 2,900 fps, which computes to 2,427 ft-lb. SAAMI publishes no other weight for it, so the table has one row. For any other bullet weight, use the figures the maker publishes for that item.
None of this is a downrange figure. SAAMI measures at 15 feet, so retained velocity, energy and drop depend on the bullet’s ballistic coefficient, which SAAMI does not publish. Each product in our 6.5-284 Norma ammo range lists whatever its maker publishes for that item.
Twist rate, chamber and pressure
The maximum average pressure is 58,000 psi. Fire 6.5-284 Norma ammunition only in a firearm chambered for it. Several unrelated cartridges share a number, so match the full designation on the box to the marking on your barrel.
6.5-284 Norma vs 6.5 Creedmoor: the SAAMI comparison
A figure from one maker’s catalogue cannot be laid beside a figure from another’s: each picks its own test barrel, zero and bullet, and many publish no test barrel at all. SAAMI is the shared basis, because it fixes one standard test barrel and one way of measuring velocity for every cartridge it lists.
Scroll the table sideways for the remaining columns.
| SAAMI specification | 6.5-284 Norma | 6.5 Creedmoor |
|---|---|---|
| Maximum average pressure | 58,000 psi | 62,000 psi |
| Standard test barrel length | Not read from the drawing | 24.000 in |
| Test barrel twist rate | Not read from the drawing | 1 turn in 8.00 in |
| Test barrel groove diameter | Not read from the drawing | .264 in |
| Lightest reference load | 130 gr — 2,900 fps / 2,427 ft-lb | 95 gr — 3,300 fps / 2,297 ft-lb |
| Heaviest reference load | 130 gr — 2,900 fps / 2,427 ft-lb | 140 gr — 2,690 fps / 2,249 ft-lb |
SAAMI standardises the 6.5-284 Norma at 58,000 psi and the 6.5 Creedmoor at 62,000 psi, so the 6.5-284 Norma runs 4,000 psi lower. SAAMI lists no bullet weight in common for the two, so there is no like-for-like velocity row to compare.
What SAAMI cannot settle is anything past the muzzle. It publishes no ballistic coefficients and no downrange data, so it cannot say which cartridge shoots flatter at distance; that depends on the bullet. We stock the other side of this comparison too: 6.5 Creedmoor ammo.
6.5-284 Norma ballistics questions
What is the maximum pressure of the 6.5-284 Norma?
ANSI/SAAMI Z299.4 sets the maximum average pressure for the 6.5-284 Norma at 58,000 psi.
Is the 6.5-284 Norma more powerful than the 6.5 Creedmoor?
SAAMI lists no bullet weight in common for the two, so there is no like-for-like row. Its highest computed reference energy is 2,427 ft-lb for the 6.5-284 Norma (130 grains) and 2,475 ft-lb for the 6.5 Creedmoor.
What is the effective range of the 6.5-284 Norma?
Effective range is not a SAAMI specification and it is not a measured figure. SAAMI measures velocity at 15 feet, so it says nothing about performance at distance; that depends on the bullet and the shooter.
How much does the 6.5-284 Norma drop at 300 yards?
SAAMI publishes muzzle velocity only, so it cannot give a drop figure. Drop depends on the bullet’s ballistic coefficient and on the zero range. A drop figure is unusable without its zero, so use the figure a maker prints for the specific load.
Where to buy these loads
Hilltop Armory carries 6.5-284 Norma ammunition from CorBon, Black Hills Ammunition, Norma, HSM Ammunition and Nosler. Browse the full 6.5-284 Norma ammo range.
