Supreme 780 Load Data: 500 Published Loads in 16 Cartridges
Empirical Precision indexes 500 published loads for Supreme 780 (Winchester) across 16 bottleneck rifle cartridges from 3 reloading sources, spanning projectile weights from 75 gr to 300 gr.
Published Loads500
Cartridges16
Sources3
Bullet Weights75–300 gr
Always start low and verify against the original published source before loading.
Powder Data Sheet
- Manufacturer
- Winchester
- Grain Type
- Spherical / Ball
- Bulk Density
- 992 kg/m³
Burn Rate Position
Position #122 of 145 rifle powders on the Empirical Precision relative burn chart (ordered fastest to slowest).
- Nearest Slower
- Reloder 26, IMR 7977
A burn chart is a guide, not load data.
Cartridges Published (16)
Sources Publishing Data (3)
| Publisher | Published Loads |
|---|---|
| Hornady | 378 |
| Berger | 62 |
| Barnes | 60 |