IMR 4451 Load Data: 3,595 Published Loads in 53 Cartridges
Empirical Precision indexes 3,595 published loads for IMR 4451 across 53 bottleneck rifle cartridges from 8 reloading sources, spanning projectile weights from 40 gr to 350 gr.
Published Loads3,595
Cartridges53
Sources8
Bullet Weights40–350 gr
Always start low and verify against the original published source before loading.
Powder Data Sheet
- Manufacturer
- IMR
- Grain Type
- Single-perforated Extruded
- Bulk Density
- 960 kg/m³
Burn Rate Position
Position #92 of 145 rifle powders on the Empirical Precision relative burn chart (ordered fastest to slowest).
- Nearest Faster
- Winchester 760, RS62
- Nearest Slower
- H4350, Reloder 16
A burn chart is a guide, not load data.
Cartridges Published (53)
Sources Publishing Data (8)
| Publisher | Published Loads |
|---|---|
| Sierra | 2,046 |
| Hornady | 829 |
| Hodgdon | 488 |
| Lyman | 120 |
| Speer | 54 |
| Nosler | 48 |
| Barnes | 6 |
| Federal | 4 |