Load Specifications
Load data in caliber 10.3 x 60 R Swiss with .413 | 200gr | RWS HIT bullet and 9 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are 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.
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Max Load - Barrel Length: 23.62"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| ADI AR 2207 | <<locked>> | 88% | 35,056 psi | 90% | 2687 fps | 99.1% |
| Alliant AR-Compᴾ | <<locked>> | 100% | 33,837 psi | 86% | 2707 fps | 96.2% |
| Alliant Reloder-7 | <<locked>> | 86% | 35,041 psi | 89% | 2631 fps | 96.2% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 29,457 psi | 75% | 1759 fps | 100% |
| IMR 4198 | <<locked>> | 90% | 34,185 psi | 87% | 2615 fps | 96.1% |
| Norma 200 | <<locked>> | 90% | 34,592 psi | 88% | 2680 fps | 96.4% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 28,848 psi | 74% | 1795 fps | 100% |
| SNPE Vectan BA6 1/2 | <<locked>> | 82% | 33,779 psi | 86% | 2438 fps | 100% |
| Vihtavuori N120 | <<locked>> | 88% | 35,375 psi | 90% | 2657 fps | 99.7% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 23.62"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| ADI AR 2207 | <<locked>> | 80% | 27,224 psi | 70% | 2484 fps | 96.8% |
| Alliant AR-Comp | <<locked>> | 98% | 31,778 psi | 81% | 2651 fps | 95.2% |
| Alliant Reloder-7 | <<locked>> | 84% | 32,822 psi | 84% | 2579 fps | 95.4% |
| Hodgdon TrailBoss | 17.9 gr | 80% | 21,393 psi | 55% | 1568 fps | 100% |
| IMR 4198 | <<locked>> | 88% | 32,213 psi | 82% | 2562 fps | 95.4% |
| Norma 200 | <<locked>> | 88% | 32,401 psi | 83% | 2628 fps | 95.7% |
| ReloadSwiss RS 14 | 18.3 gr | 80% | 21,045 psi | 54% | 1608 fps | 100% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 31,894 psi | 81% | 2402 fps | 100% |
| Vihtavuori N120 | <<locked>> | 80% | 27,557 psi | 70% | 2464 fps | 98.1% |
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 18 powders for 10.3 x 60 R Swiss loaded with the .413 | 200gr | RWS HIT. Alliant AR-Comp delivers the highest muzzle velocity at 2,707 fps; across all powders the maximum-charge window runs from 1,759 fps to 2,707 fps. Alliant AR-Comp gives the best case fill at 100 %, and 18 of the 18 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. Alliant AR-Comp, 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. ReloadSwiss RS 14, Hodgdon TrailBoss rank at the top here: for 10.3 x 60 R Swiss with the .413 | 200gr | RWS HIT 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.