Load Specifications
Load data in caliber 8 x 60 RS with .323 | 126gr | Sax MJG-SX bullet and 34 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant AR-Comp, IMR 3031 and Hodgdon H322.
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 |
|---|---|---|---|---|---|---|
| Accurate 2015 | <<locked>> | 94% | 43,004 psi | 87% | 2920 fps | 98.8% |
| Accurate 2460 | <<locked>> | 92% | 44,396 psi | 90% | 2959 fps | 96.5% |
| Accurate 2495ᴾ | <<locked>> | 100% | 40,205 psi | 82% | 2936 fps | 98.7% |
| Accurate 2520 | <<locked>> | 96% | 44,382 psi | 90% | 2999 fps | 96% |
| Accurate LT-30 | <<locked>> | 86% | 43,772 psi | 89% | 2844 fps | 97.8% |
| Accurate LT-32 | <<locked>> | 86% | 44,150 psi | 90% | 2851 fps | 95.9% |
| ADI AR 2207 | <<locked>> | 84% | 43,352 psi | 88% | 2910 fps | 100% |
| ADI AR 2219 | <<locked>> | 88% | 44,106 psi | 89% | 2986 fps | 97.7% |
| Alliant AR-Comp | <<locked>> | 96% | 42,424 psi | 86% | 3002 fps | 100% |
| Alliant Reloder-10x | <<locked>> | 90% | 43,700 psi | 89% | 2956 fps | 99.6% |
| Alliant Reloder-7 | <<locked>> | 82% | 42,148 psi | 85% | 2861 fps | 99.6% |
| Baschieri & Pellagri 106 | <<locked>> | 86% | 42,119 psi | 85% | 2828 fps | 97.7% |
| Hodgdon H322 | <<locked>> | 90% | 42,714 psi | 87% | 2956 fps | 97.4% |
| Hodgdon H335 | <<locked>> | 90% | 43,627 psi | 88% | 2972 fps | 96.6% |
| Hodgdon H4198 | <<locked>> | 82% | 42,714 psi | 87% | 2841 fps | 97% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 32,213 psi | 65% | 1886 fps | 100% |
| IMR 3031 | <<locked>> | 98% | 42,815 psi | 87% | 3025 fps | 98.3% |
| IMR 4198 | <<locked>> | 88% | 42,873 psi | 87% | 2894 fps | 99.8% |
| Norma 200 | <<locked>> | 86% | 43,772 psi | 89% | 2936 fps | 99.8% |
| Norma 202 | <<locked>> | 98% | 43,772 psi | 89% | 2976 fps | 96.7% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 31,952 psi | 65% | 1929 fps | 100% |
| Rottweil R 901 | <<locked>> | 94% | 42,583 psi | 86% | 2917 fps | 96% |
| SNPE Vectan BA6 1/2 | <<locked>> | 82% | 43,395 psi | 88% | 2657 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 86% | 41,887 psi | 85% | 2930 fps | 96% |
| SNPE Vectan SP 3 | <<locked>> | 90% | 44,512 psi | 90% | 2963 fps | 98.5% |
| SNPE Vectan Tubal 3000 | <<locked>> | 96% | 44,614 psi | 90% | 2890 fps | 96.6% |
| SNPE Vectan Tubal 5000ᴾ | <<locked>> | 100% | 40,524 psi | 82% | 2825 fps | 96.8% |
| Somchem S335 | <<locked>> | 96% | 43,033 psi | 87% | 2887 fps | 97.3% |
| Vihtavuori N120 | <<locked>> | 84% | 43,453 psi | 88% | 2867 fps | 100% |
| Vihtavuori N130 | <<locked>> | 92% | 44,527 psi | 90% | 2907 fps | 99.5% |
| Vihtavuori N133 | <<locked>> | 96% | 43,830 psi | 89% | 2900 fps | 98.9% |
| Vihtavuori N135ᴾ | <<locked>> | 100% | 41,510 psi | 84% | 2949 fps | 98.8% |
| Vihtavuori N140ᴾ | <<locked>> | 100% | 44,150 psi | 90% | 2956 fps | 97.1% |
| Vihtavuori N540ᴾ | <<locked>> | 100% | 42,699 psi | 87% | 2936 fps | 96.1% |
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 |
|---|---|---|---|---|---|---|
| Accurate 2015 | <<locked>> | 82% | 29,573 psi | 60% | 2602 fps | 95% |
| Accurate 2460 | <<locked>> | 90% | 41,510 psi | 84% | 2904 fps | 95.7% |
| Accurate 2495 | <<locked>> | 90% | 28,558 psi | 58% | 2651 fps | 95.1% |
| Accurate 2520 | <<locked>> | 94% | 41,365 psi | 84% | 2940 fps | 95.2% |
| Accurate LT-30 | <<locked>> | 80% | 36,390 psi | 74% | 2684 fps | 95.8% |
| Accurate LT-32 | <<locked>> | 84% | 41,568 psi | 84% | 2795 fps | 95.1% |
| ADI AR 2207 | <<locked>> | 80% | 38,363 psi | 78% | 2812 fps | 100% |
| ADI AR 2219 | <<locked>> | 82% | 36,100 psi | 73% | 2805 fps | 95.4% |
| Alliant AR-Comp | 40.3 gr | 80% | 25,483 psi | 52% | 2546 fps | 95.6% |
| Alliant Reloder-10x | <<locked>> | 80% | 31,995 psi | 65% | 2687 fps | 97.2% |
| Alliant Reloder-7 | <<locked>> | 80% | 39,624 psi | 80% | 2808 fps | 99.3% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 34,621 psi | 70% | 2661 fps | 95.6% |
| Hodgdon H322 | 43.7 gr | 84% | 35,201 psi | 71% | 2782 fps | 95% |
| Hodgdon H335 | <<locked>> | 88% | 40,799 psi | 83% | 2913 fps | 95.8% |
| Hodgdon H4198 | <<locked>> | 80% | 40,118 psi | 81% | 2785 fps | 96.3% |
| Hodgdon TrailBoss | <<locked>> | 80% | 23,511 psi | 48% | 1683 fps | 100% |
| IMR 3031 | 45.3 gr | 90% | 33,315 psi | 68% | 2792 fps | 95.3% |
| IMR 4198 | <<locked>> | 80% | 33,953 psi | 69% | 2694 fps | 98.5% |
| Norma 200 | <<locked>> | 80% | 36,318 psi | 74% | 2779 fps | 98.9% |
| Norma 202 | <<locked>> | 94% | 38,609 psi | 78% | 2867 fps | 95.2% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 23,453 psi | 48% | 1722 fps | 100% |
| Rottweil R 901 | <<locked>> | 92% | 40,074 psi | 81% | 2861 fps | 95.3% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 41,292 psi | 84% | 2621 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 84% | 38,928 psi | 79% | 2864 fps | 95.1% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 32,561 psi | 66% | 2687 fps | 95.2% |
| SNPE Vectan Tubal 3000 | <<locked>> | 92% | 39,305 psi | 80% | 2782 fps | 95.2% |
| SNPE Vectan Tubal 5000 | <<locked>> | 96% | 35,766 psi | 73% | 2720 fps | 95.3% |
| Somchem S335 | <<locked>> | 90% | 35,955 psi | 73% | 2733 fps | 95.3% |
| Vihtavuori N120 | <<locked>> | 80% | 38,522 psi | 78% | 2772 fps | 100% |
| Vihtavuori N130 | <<locked>> | 80% | 30,893 psi | 63% | 2595 fps | 96.5% |
| Vihtavuori N133 | <<locked>> | 84% | 30,371 psi | 62% | 2592 fps | 95.1% |
| Vihtavuori N135 | <<locked>> | 90% | 30,168 psi | 61% | 2674 fps | 95.4% |
| Vihtavuori N140 | <<locked>> | 96% | 39,059 psi | 79% | 2848 fps | 95.7% |
| Vihtavuori N540 | <<locked>> | 98% | 40,205 psi | 82% | 2884 fps | 95.4% |
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 34 powders for 8 x 60 RS loaded with the .323 | 126gr | Sax MJG-SX. IMR 3031 delivers the highest muzzle velocity at 3,025 fps; across all powders the maximum-charge window runs from 1,886 fps to 3,025 fps. Accurate 2495 gives the best case fill at 100 %, and 34 of the 34 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (340 MPa), the top charges use 65–90 %, leaving at least 10 % headroom. The 126.0 gr projectile in 0.323" calls for a 1:11.5 twist; slower twists will usually not stabilise this weight. Accurate 2495, 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. Alliant AR-Comp, IMR 3031, Hodgdon H322 rank at the top here: for 8 x 60 RS with the .323 | 126gr | Sax MJG-SX they combine a high case fill with complete burn and sit in the upper velocity band. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.