Load Specifications
Load data in caliber .303 Savage with .308 | 130gr | Ferrobull Tripple Expand Jagd bullet and 11 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ADI AR 2207, ReloadSwiss RS 14 and Hodgdon TrailBoss.
Important Notice: DO NOT go below Minimum Charge or above Maximum Charge. Since we have no control over the equipment and components used, any responsibility and liability for the results achieved is rejected.
Only powders/loads that match the current filter criteria are displayed: max pressure of a load ≤ 90% of max. standardized pressure, fill rate ≥ 80% and propellant combustion ≥ 95%. Use the sliders above the tables to adjust these thresholds.
Charge: Powder weight in grains. Start with the minimum load and work up carefully.
FR (Fill Rate): Case fill as a percentage. Values above 100% mean compressed loads.
MaxP / %: Maximum chamber pressure in bar and as a percentage of the standardized maximum for this caliber.
V(0): Muzzle velocity in feet per second (fps) at the standardized barrel length.
z (Powder Burn): Estimated propellant combustion percentage at bullet exit.
A valid access license is required to use the Personalized Load Calculator.
You can find more information in our FAQ: How can I use the Personalized Load Calculator?
Max Load - Barrel Length: 22"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| ADI AR 2207 | <<locked>> | 88% | 34,592 psi | 88% | 2379 fps | 99.2% |
| Alliant AR-Compᴾ | <<locked>> | 100% | 33,156 psi | 85% | 2398 fps | 96.2% |
| Alliant Reloder-7 | <<locked>> | 86% | 34,418 psi | 88% | 2326 fps | 96.3% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 29,457 psi | 75% | 1539 fps | 100% |
| IMR 4198 | <<locked>> | 90% | 33,736 psi | 86% | 2313 fps | 96.3% |
| Lovex S053 | <<locked>> | 82% | 35,418 psi | 90% | 2300 fps | 99.9% |
| Norma 200 | <<locked>> | 90% | 33,765 psi | 86% | 2369 fps | 96.5% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 28,906 psi | 74% | 1572 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 82% | 35,404 psi | 90% | 2343 fps | 98.2% |
| SNPE Vectan BA6 1/2 | <<locked>> | 82% | 33,649 psi | 86% | 2156 fps | 100% |
| Vihtavuori N120 | <<locked>> | 88% | 34,882 psi | 89% | 2352 fps | 99.8% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 22"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| ADI AR 2207 | 23.7 gr | 80% | 26,716 psi | 68% | 2195 fps | 97% |
| Alliant AR-Comp | <<locked>> | 98% | 31,198 psi | 80% | 2349 fps | 95.3% |
| Alliant Reloder-7 | <<locked>> | 84% | 32,372 psi | 83% | 2283 fps | 95.6% |
| Hodgdon TrailBoss | 8.6 gr | 80% | 21,567 psi | 55% | 1375 fps | 100% |
| IMR 4198 | <<locked>> | 88% | 31,734 psi | 81% | 2264 fps | 95.6% |
| Lovex S053 | <<locked>> | 80% | 33,634 psi | 86% | 2264 fps | 99.8% |
| Norma 200 | <<locked>> | 86% | 29,733 psi | 76% | 2277 fps | 95% |
| ReloadSwiss RS 14 | 8.7 gr | 80% | 20,929 psi | 53% | 1401 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 80% | 33,272 psi | 85% | 2297 fps | 97.7% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 31,560 psi | 81% | 2116 fps | 100% |
| Vihtavuori N120 | <<locked>> | 80% | 27,093 psi | 69% | 2175 fps | 98.3% |
Recommended = one of the top powders for this cartridge and bullet combination.
ᴾ possible press load - work up slowly to this load while watching for signs of excessive pressure.
This overview compares 20 powders for .303 Savage loaded with the .308 | 130gr | Ferrobull Tripple Expand Jagd. Alliant AR-Comp delivers the highest muzzle velocity at 2,398 fps; across all powders the maximum-charge window runs from 1,539 fps to 2,398 fps. Accurate 2015 gives the best case fill at 100 %, and 20 of the 20 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (270 MPa), the top charges use 74–90 %, leaving at least 10 % headroom. The 130.0 gr projectile in 0.308" calls for a 1:15.0 twist; slower twists will usually not stabilise this weight. Accurate 2015, Alliant AR-Comp, Hodgdon TrailBoss reach 100 % fill or more at maximum charge, so these are compressed loads: they need a long drop tube to seat cleanly and react sensitively to the case capacity of your own brass lot. ADI AR 2207, ReloadSwiss RS 14, Hodgdon TrailBoss rank at the top here: for .303 Savage with the .308 | 130gr | Ferrobull Tripple Expand Jagd they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate 2015, Accurate LT-30, Baschieri & Pellagri 106 burn incompletely and react more sensitively to barrel length and temperature. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.