The 35 Whelen is a centerfire rifle cartridge standardised by SAAMI in ANSI/SAAMI Z299.4. SAAMI sets its maximum average pressure at 62,000 psi, and measures its reference velocities in a 24.000 in standard test barrel rifled 1 turn in 16.00 in. This guide sets out SAAMI’s published reference velocity for each bullet weight, computes the muzzle energy each one carries, and compares the 35 Whelen with the 30-06 Springfield on the same basis.
35 Whelen 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 |
|---|---|---|
| 180 gr | 2,900 fps | 3,361 ft-lb |
| 200 gr | 2,660–2,800 fps | 3,142–3,481 ft-lb |
| 225 gr | 2,600 fps | 3,377 ft-lb |
| 250 gr | 2,385 fps | 3,157 ft-lb |
What the numbers mean for a shot
SAAMI lists 4 reference bullet weights for the 35 Whelen, from 180 to 250 grains. The lightest, 180 grains, is listed at 2,900 fps, which computes to 3,361 ft-lb. The heaviest, 250 grains, is listed at 2,385 fps, or 3,157 ft-lb. The most energetic reference load is the 200-grain at 2,800 fps: 3,481 ft-lb computed.
SAAMI lists more than one reference velocity for 200 grains. Its own note says this is because a weight can carry several introductions meeting different market needs, such as reduced-recoil loads, or because propellant and loading advances allowed higher velocities after the original load appeared.
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 35 Whelen ammo range lists whatever its maker publishes for that item.
Twist rate, chamber and pressure
SAAMI’s standard test barrel for the 35 Whelen is 24.000 in long and rifled 1 turn in 16.00 in, with a .357 in groove diameter. That is the barrel every reference velocity above was measured in, not a statement about your rifle: a shorter production barrel will usually give lower velocity, and a twist slower than a bullet needs will not stabilise it. The maximum average pressure is 62,000 psi. Fire 35 Whelen 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.
35 Whelen vs 30-06: 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 | 35 Whelen | 30-06 Springfield |
|---|---|---|
| Maximum average pressure | 62,000 psi | 60,000 psi |
| Standard test barrel length | 24.000 in | 24.000 in |
| Test barrel twist rate | 1 turn in 16.00 in | 1 turn in 10.00 in |
| Test barrel groove diameter | .357 in | .308 in |
| Lightest reference load | 180 gr — 2,900 fps / 3,361 ft-lb | 55 gr — 4,050 fps / 2,003 ft-lb |
| A weight both list | 200 gr — 2,660–2,800 fps / 3,142–3,481 ft-lb | 200 gr — 2,540 fps / 2,865 ft-lb |
| Heaviest reference load | 250 gr — 2,385 fps / 3,157 ft-lb | 220 gr — 2,400 fps / 2,813 ft-lb |
SAAMI standardises the 35 Whelen at 62,000 psi and the 30-06 Springfield at 60,000 psi, so the 35 Whelen runs 2,000 psi higher. At 200 grains, a weight both list, SAAMI’s 35 Whelen reference load is 2,800 fps and 3,481 ft-lb computed, against 2,540 fps and 2,865 ft-lb for the 30-06 Springfield. On that row the 35 Whelen carries the more energy. Their standard test barrels differ (24.000 in, 1 turn in 16.00 in for the 35 Whelen; 24.000 in, 1 turn in 10.00 in for the 30-06 Springfield), so compare the reference rows with that in mind.
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: 30-06 ammo.
35 Whelen ballistics questions
What is the maximum pressure of the 35 Whelen?
ANSI/SAAMI Z299.4 sets the maximum average pressure for the 35 Whelen at 62,000 psi.
What twist rate and barrel length does SAAMI use for the 35 Whelen?
SAAMI’s standard test barrel for the 35 Whelen is 24.000 in long and rifled 1 turn in 16.00 in. Your own rifle may differ, and a twist slower than a long, heavy bullet needs will not stabilise it.
What bullet weights does SAAMI list for the 35 Whelen?
SAAMI lists 4 reference weights, from 180 to 250 grains: 180, 200, 225 and 250.
Is the 35 Whelen more powerful than the 30-06 Springfield?
Power is not a SAAMI measure, but reference muzzle energy is a fair proxy. At 200 grains, a weight both list, SAAMI’s 35 Whelen reference load is 2,800 fps and 3,481 ft-lb computed, against 2,540 fps and 2,865 ft-lb for the 30-06 Springfield.
How much does the 35 Whelen 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.
What is the effective range of the 35 Whelen?
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.
Where to buy these loads
Hilltop Armory carries 35 Whelen ammunition from DoubleTap Ammunition, Buffalo Bore, Federal, Barnes and Hornady. Browse the full 35 Whelen ammo range.
