Last reviewed: 2026-04-18 by Jake Terry, FFL07/SOT3, NRA-certified firearms instructor.
When you’re loading magnum rifle cases, burn rate and metering consistency determine whether your five-shot group measures half-MOA or scatters across two inches at 100 yards. Reloder 22 powder addresses both variables with an extruded granule profile that meters through progressive and single-stage presses without bridging, and a temperature-stable burn curve that maintains velocity across seasonal temperature swings. Alliant Powder positions this formulation in the medium-slow range of their smokeless lineup — slower than Reloder 19, faster than Reloder 25 — making it the default choice for .270 Winchester pushing 150-grain bullets, 7mm Remington Magnum with 160- to 175-grain projectiles, and .300 Winchester Magnum running 180- to 200-grain loads. Reloaders working with those cartridges will recognize Reloder 22 as the baseline powder cited in most published load data for magnum hunting applications.
The Numbers
| Spec | Value |
|---|---|
| Type | Smokeless extruded powder |
| Burn rate class | Medium-slow (magnum rifle) |
| Primary cartridges | .270 Win, 7mm Rem Mag, .300 Win Mag |
| Canister size | 1 lb / 8 lb |
| Manufacturer | Alliant Powder |
This powder sits between Reloder 19 and Reloder 25 in Alliant’s burn-rate spectrum, putting it in optimal territory for standard-length magnum cases that need complete powder combustion before the bullet exits a 24- to 26-inch barrel. Find additional reloading components and tools in our gun powder section.
Who It’s For
Reloder 22 targets handloaders building hunting ammunition for magnum-class cartridges where case capacity exceeds 70 grains of water and bullet weights run 150 grains or heavier. If you’re loading .270 Winchester with 150-grain Partitions for elk, 7mm Remington Magnum with 168-grain Bergers for long-range mule deer, or .300 Winchester Magnum with 200-grain AccuBonds for brown bear, this powder will appear in the mid-range of charge weights across multiple published manuals. The extruded granule shape meters consistently through most powder measures, reducing charge-weight variation shot to shot — critical when you’re working up a load that delivers both acceptable pressure signs and sub-MOA accuracy at distance.
Safe Handling & Compliance
Smokeless powder is a regulated propellant. Store in original containers in a cool, dry location away from heat sources, sparks, and open flame. Do not mix powder lots. Never exceed maximum published load data from recognized sources — overpressure events can cause catastrophic firearm failure, serious injury, or death. Always consult current reloading manuals and start at minimum published charges, working up in 0.5-grain increments while monitoring for pressure signs.
- Follow all four rules of firearm safety when handling reloaded ammunition — treat every round as live, never point at anything you’re unwilling to destroy, keep your finger off the trigger until ready to fire, and verify your backstop.
- Verify current federal, state, and local regulations governing possession and transport of smokeless powder before ordering — some jurisdictions limit quantities or require permits.
- Use a calibrated powder scale or electronic dispenser to verify each charge — visual checks alone cannot detect dangerous overcharges in magnum cases.
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