Powder head-to-head
Reloader 26 vs Retumbo
Both powders on one page: burn-rate position, temperature sensitivity and the 4 cartridges they share, with the substitution note from the reference.
Burn-rate position
FastestSlowest
Substitution
Similar burn rate; reduce 3–5% when substituting.
Confidence: Community. Always start at published minimums and work up.
Side by side
| Reloader 26 | Retumbo | |
|---|---|---|
| Manufacturer | Alliant | Hodgdon |
| Burn-rate rank | #79 | #78 |
| Burn category | Medium-Slow | Magnum Rifle |
| Grain shape | Extruded | Extruded |
| Temperature sensitivity | Low | Moderate |
| Applications | Rifle | Rifle |
| Suppressor-friendly | No | No |
| US availability | Moderate | Common |
| Status | Active | Active |
Shared cartridges
FAQs
- Can I substitute Reloader 26 for Retumbo?
- Similar burn rate; reduce 3–5% when substituting. Confidence: Community. Always start at published minimum charges and work up.
- Which burns faster, Reloader 26 or Retumbo?
- Retumbo is the faster-burning of the two (rank #78 vs #79 — lower rank burns faster).
- What cartridges do Reloader 26 and Retumbo both load?
- Both powders are listed for .300 Winchester Magnum, .300 Remington Ultra Magnum, 7mm Remington Magnum, .338 Lapua Magnum.