Powder head-to-head
IMR 4198 vs Reloader 7
Both powders on one page: burn-rate position, temperature sensitivity and the 3 cartridges they share, with the substitution note from the reference.
Burn-rate position
FastestSlowest
Substitution
Similar burn rate for small cases and pistol magnum loads. Work up from starting data.
Confidence: Community. Always start at published minimums and work up.
Side by side
| IMR 4198 | Reloader 7 | |
|---|---|---|
| Manufacturer | IMR | Alliant |
| Burn-rate rank | #41 | #48 |
| Burn category | Rifle Fast | Medium |
| Grain shape | Extruded | Extruded |
| Temperature sensitivity | Moderate | Moderate |
| Applications | Rifle | Rifle |
| Suppressor-friendly | No | Yes |
| US availability | Common | Moderate |
| Status | Active | Active |
Shared cartridges
FAQs
- Can I substitute IMR 4198 for Reloader 7?
- Similar burn rate for small cases and pistol magnum loads. Work up from starting data. Confidence: Community. Always start at published minimum charges and work up.
- Which burns faster, IMR 4198 or Reloader 7?
- IMR 4198 is the faster-burning of the two (rank #41 vs #48 — lower rank burns faster).
- What cartridges do IMR 4198 and Reloader 7 both load?
- Both powders are listed for .223 Remington, .222 Remington, .22 Hornet.