Load Specifications
Load data in caliber 10.3 x 60 R Swiss with .416 | 300gr | Reichenberg Super Penetr. bullet and 23 powders. The key underlying parameters are shown in the table above.
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: 23.62"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2015 | <<locked>> | 86% | 34,069 psi | 87% | 2192 fps | 98.8% |
| Accurate 2460 | <<locked>> | 84% | 34,214 psi | 87% | 2215 fps | 96.1% |
| Accurate 2495 | <<locked>> | 96% | 35,259 psi | 90% | 2287 fps | 99.3% |
| Accurate 4064 | <<locked>> | 98% | 35,302 psi | 90% | 2303 fps | 97.4% |
| Alliant AR-Comp | <<locked>> | 88% | 33,417 psi | 85% | 2254 fps | 100% |
| Alliant Reloder-10x | <<locked>> | 82% | 34,722 psi | 89% | 2211 fps | 99.6% |
| Hodgdon H322 | <<locked>> | 82% | 33,692 psi | 86% | 2211 fps | 97.3% |
| Hodgdon H335 | <<locked>> | 82% | 33,765 psi | 86% | 2218 fps | 96.2% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 32,372 psi | 83% | 1457 fps | 100% |
| IMR 3031 | <<locked>> | 90% | 33,924 psi | 87% | 2274 fps | 98.2% |
| Lovex D073.6 | <<locked>> | 92% | 34,708 psi | 89% | 2274 fps | 95.8% |
| Norma 202 | <<locked>> | 90% | 34,403 psi | 88% | 2238 fps | 96.5% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 32,169 psi | 82% | 1493 fps | 100% |
| Rottweil R 901 | <<locked>> | 86% | 33,823 psi | 86% | 2185 fps | 96% |
| Shooters World Match Rifle | <<locked>> | 92% | 34,708 psi | 89% | 2274 fps | 95.8% |
| SNPE Vectan Tubal 3000 | <<locked>> | 88% | 35,317 psi | 90% | 2165 fps | 96.6% |
| SNPE Vectan Tubal 5000 | <<locked>> | 94% | 34,127 psi | 87% | 2165 fps | 97.3% |
| Somchem S335 | <<locked>> | 88% | 34,127 psi | 87% | 2169 fps | 97.2% |
| Vihtavuori N130 | <<locked>> | 82% | 33,533 psi | 86% | 2139 fps | 99.2% |
| Vihtavuori N133 | <<locked>> | 88% | 34,896 psi | 89% | 2178 fps | 98.8% |
| Vihtavuori N135 | <<locked>> | 94% | 34,954 psi | 89% | 2260 fps | 99.2% |
| Vihtavuori N140 | <<locked>> | 92% | 34,896 psi | 89% | 2224 fps | 97% |
| Vihtavuori N540 | <<locked>> | 92% | 33,504 psi | 86% | 2211 fps | 95.9% |
Start Load - Barrel Length: 23.62"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2015 | <<locked>> | 80% | 28,079 psi | 72% | 2060 fps | 97.2% |
| Accurate 2460 | <<locked>> | 82% | 31,908 psi | 81% | 2165 fps | 95.3% |
| Accurate 2495 | <<locked>> | 84% | 23,308 psi | 60% | 2018 fps | 95.6% |
| Accurate 4064 | <<locked>> | 92% | 28,921 psi | 74% | 2165 fps | 95.2% |
| Alliant AR-Comp | <<locked>> | 80% | 25,889 psi | 66% | 2073 fps | 98.7% |
| Alliant Reloder-10x | <<locked>> | 80% | 32,648 psi | 83% | 2169 fps | 99.3% |
| Hodgdon H322 | <<locked>> | 80% | 31,459 psi | 80% | 2162 fps | 96.5% |
| Hodgdon H335 | <<locked>> | 80% | 31,575 psi | 81% | 2169 fps | 95.3% |
| Hodgdon TrailBoss | <<locked>> | 80% | 23,728 psi | 61% | 1299 fps | 100% |
| IMR 3031 | <<locked>> | 82% | 26,368 psi | 67% | 2087 fps | 95.2% |
| Lovex D073.6 | <<locked>> | 90% | 32,329 psi | 83% | 2224 fps | 95% |
| Norma 202 | <<locked>> | 86% | 30,284 psi | 77% | 2146 fps | 95% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 23,525 psi | 60% | 1329 fps | 100% |
| Rottweil R 901 | <<locked>> | 84% | 31,908 psi | 81% | 2146 fps | 95.3% |
| Shooters World Match Rifle | <<locked>> | 90% | 32,329 psi | 83% | 2224 fps | 95% |
| SNPE Vectan Tubal 3000 | <<locked>> | 84% | 31,140 psi | 80% | 2080 fps | 95.1% |
| SNPE Vectan Tubal 5000 | <<locked>> | 88% | 28,340 psi | 72% | 2037 fps | 95.2% |
| Somchem S335 | <<locked>> | 82% | 28,311 psi | 72% | 2041 fps | 95.1% |
| Vihtavuori N130 | <<locked>> | 80% | 31,430 psi | 80% | 2096 fps | 98.8% |
| Vihtavuori N133 | <<locked>> | 80% | 27,253 psi | 70% | 2011 fps | 96.6% |
| Vihtavuori N135 | <<locked>> | 82% | 23,946 psi | 61% | 2001 fps | 95.4% |
| Vihtavuori N140 | <<locked>> | 88% | 30,835 psi | 79% | 2139 fps | 95.5% |
| Vihtavuori N540 | <<locked>> | 90% | 31,328 psi | 80% | 2165 fps | 95% |
ᴾ possible press load - work up slowly to this load while watching for signs of excessive pressure.
This overview compares 23 powders for 10.3 x 60 R Swiss loaded with the .416 | 300gr | Reichenberg Super Penetr.. Accurate 4064 delivers the highest muzzle velocity at 2,303 fps; across all powders the maximum-charge window runs from 1,457 fps to 2,303 fps. Hodgdon TrailBoss gives the best case fill at 100 %, and 23 of the 23 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (270 MPa), the top charges use 82–90 %, leaving at least 10 % headroom. Hodgdon TrailBoss, ReloadSwiss RS 14 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. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.