Load Specifications
Load data in caliber 9.3 x 66 Sako with .366 | 185gr | Reichenberg HDB Universal bullet and 55 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ADI AR 2219, Alliant Power Pro 1200-R and SNPE Vectan SP 10.
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: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 1680 | <<locked>> | 86% | 53,011 psi | 88% | 2805 fps | 100% |
| Accurate 2015ᴾ | <<locked>> | 100% | 53,055 psi | 88% | 2890 fps | 100% |
| Accurate 2460 | <<locked>> | 96% | 51,953 psi | 86% | 2897 fps | 98.8% |
| Accurate 2495ᴾ | <<locked>> | 100% | 40,756 psi | 68% | 2759 fps | 99.5% |
| Accurate 2520ᴾ | <<locked>> | 100% | 52,431 psi | 87% | 2946 fps | 98.6% |
| Accurate 4064ᴾ | <<locked>> | 100% | 37,913 psi | 63% | 2720 fps | 96.9% |
| Accurate LT-30 | <<locked>> | 92% | 53,650 psi | 89% | 2818 fps | 99.7% |
| Accurate LT-32 | <<locked>> | 92% | 54,157 psi | 90% | 2831 fps | 98.7% |
| ADI AR 2207 | <<locked>> | 90% | 53,301 psi | 89% | 2858 fps | 100% |
| ADI AR 2219 | <<locked>> | 92% | 51,750 psi | 86% | 2920 fps | 99.6% |
| ADI Benchmark 8208ᴾ | <<locked>> | 100% | 52,460 psi | 87% | 2907 fps | 97% |
| Alliant AR-Compᴾ | <<locked>> | 100% | 49,487 psi | 82% | 2923 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 96% | 52,765 psi | 88% | 3009 fps | 96.6% |
| Alliant Reloder-10x | <<locked>> | 96% | 53,693 psi | 89% | 2917 fps | 100% |
| Alliant Reloder-7 | <<locked>> | 88% | 51,619 psi | 86% | 2825 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 92% | 52,112 psi | 87% | 2812 fps | 99.7% |
| Hodgdon Benchmark | <<locked>> | 98% | 52,460 psi | 87% | 2861 fps | 97.6% |
| Hodgdon BL-C2ᴾ | <<locked>> | 100% | 49,777 psi | 83% | 2927 fps | 97.2% |
| Hodgdon H322 | <<locked>> | 96% | 53,490 psi | 89% | 2946 fps | 99.7% |
| Hodgdon H335 | <<locked>> | 94% | 51,184 psi | 85% | 2913 fps | 98.9% |
| Hodgdon H4198 | <<locked>> | 88% | 52,504 psi | 87% | 2822 fps | 99.4% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 32,111 psi | 53% | 1736 fps | 100% |
| IMR 3031ᴾ | <<locked>> | 100% | 46,731 psi | 78% | 2904 fps | 99.6% |
| IMR 4198 | <<locked>> | 94% | 52,272 psi | 87% | 2848 fps | 100% |
| IMR 4227 | <<locked>> | 84% | 52,359 psi | 87% | 2779 fps | 100% |
| IMR 8208 XBRᴾ | <<locked>> | 100% | 52,460 psi | 87% | 2907 fps | 97% |
| Lovex D073.4 | <<locked>> | 90% | 52,982 psi | 88% | 2923 fps | 98.5% |
| Lovex D073.5 | <<locked>> | 96% | 52,214 psi | 87% | 2904 fps | 97.9% |
| Lovex D073.6ᴾ | <<locked>> | 100% | 46,064 psi | 77% | 2854 fps | 97.6% |
| Lovex S053 | <<locked>> | 86% | 54,041 psi | 90% | 2766 fps | 100% |
| Norma 200 | <<locked>> | 92% | 53,896 psi | 90% | 2900 fps | 100% |
| Norma 201ᴾ | <<locked>> | 100% | 47,761 psi | 79% | 2831 fps | 96.1% |
| Norma 202ᴾ | <<locked>> | 100% | 47,674 psi | 79% | 2858 fps | 98.5% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 31,923 psi | 53% | 1775 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 84% | 52,402 psi | 87% | 2815 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 96% | 52,895 psi | 88% | 2917 fps | 98.4% |
| Rottweil R 901ᴾ | <<locked>> | 100% | 51,619 psi | 86% | 2887 fps | 98.8% |
| Shooters World AR Plus | <<locked>> | 90% | 52,982 psi | 88% | 2923 fps | 98.5% |
| Shooters World Match Rifleᴾ | <<locked>> | 100% | 46,064 psi | 77% | 2854 fps | 97.6% |
| Shooters World Tactical Rifle | <<locked>> | 94% | 54,099 psi | 90% | 2884 fps | 96.8% |
| SNPE Vectan BA6 1/2 | <<locked>> | 88% | 51,779 psi | 86% | 2579 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 92% | 52,315 psi | 87% | 2927 fps | 99% |
| SNPE Vectan SP 3 | <<locked>> | 94% | 51,909 psi | 86% | 2887 fps | 99.9% |
| SNPE Vectan Tubal 3000ᴾ | <<locked>> | 100% | 51,430 psi | 85% | 2818 fps | 98.8% |
| SNPE Vectan Tubal 5000ᴾ | <<locked>> | 100% | 41,031 psi | 68% | 2654 fps | 98% |
| Somchem S321 | <<locked>> | 98% | 53,780 psi | 89% | 2953 fps | 97.6% |
| Somchem S335ᴾ | <<locked>> | 100% | 49,676 psi | 83% | 2815 fps | 99.2% |
| Vihtavuori N120 | <<locked>> | 90% | 53,359 psi | 89% | 2808 fps | 100% |
| Vihtavuori N130 | <<locked>> | 98% | 54,418 psi | 90% | 2864 fps | 100% |
| Vihtavuori N133ᴾ | <<locked>> | 100% | 50,546 psi | 84% | 2818 fps | 99.9% |
| Vihtavuori N135ᴾ | <<locked>> | 100% | 42,279 psi | 70% | 2772 fps | 99.6% |
| Vihtavuori N140ᴾ | <<locked>> | 100% | 45,020 psi | 75% | 2782 fps | 98.3% |
| Vihtavuori N530ᴾ | <<locked>> | 100% | 53,359 psi | 89% | 2913 fps | 97.2% |
| Vihtavuori N540ᴾ | <<locked>> | 100% | 43,598 psi | 72% | 2772 fps | 97.5% |
| Winchester 748ᴾ | <<locked>> | 100% | 51,213 psi | 85% | 2949 fps | 97.7% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 1680 | <<locked>> | 80% | 43,410 psi | 72% | 2654 fps | 99.9% |
| Accurate 2015 | <<locked>> | 80% | 27,833 psi | 46% | 2388 fps | 95.7% |
| Accurate 2460 | <<locked>> | 86% | 36,767 psi | 61% | 2625 fps | 95.6% |
| Accurate 2495 | <<locked>> | 88% | 26,731 psi | 44% | 2438 fps | 95.7% |
| Accurate 2520 | <<locked>> | 90% | 36,564 psi | 61% | 2657 fps | 95.1% |
| Accurate 4064 | <<locked>> | 96% | 33,040 psi | 55% | 2608 fps | 95.3% |
| Accurate LT-30 | <<locked>> | 80% | 37,101 psi | 62% | 2523 fps | 97.2% |
| Accurate LT-32 | <<locked>> | 80% | 37,521 psi | 62% | 2530 fps | 95.2% |
| ADI AR 2207 | <<locked>> | 80% | 38,812 psi | 64% | 2625 fps | 100% |
| ADI AR 2219 | 51.7 gr | 80% | 34,229 psi | 57% | 2582 fps | 96.1% |
| ADI Benchmark 8208 | <<locked>> | 96% | 46,209 psi | 77% | 2802 fps | 95.6% |
| Alliant AR-Comp | <<locked>> | 80% | 25,715 psi | 43% | 2398 fps | 97.3% |
| Alliant Power Pro 1200-R | 57.6 gr | 92% | 46,180 psi | 77% | 2894 fps | 95% |
| Alliant Reloder-10x | <<locked>> | 80% | 32,489 psi | 54% | 2523 fps | 98.4% |
| Alliant Reloder-7 | <<locked>> | 80% | 40,263 psi | 67% | 2631 fps | 99.8% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 35,215 psi | 59% | 2503 fps | 97% |
| Hodgdon Benchmark | <<locked>> | 90% | 41,118 psi | 68% | 2657 fps | 95% |
| Hodgdon BL-C2 | <<locked>> | 96% | 43,149 psi | 72% | 2808 fps | 95.7% |
| Hodgdon H322 | <<locked>> | 82% | 33,489 psi | 56% | 2566 fps | 95.9% |
| Hodgdon H335 | <<locked>> | 84% | 36,172 psi | 60% | 2628 fps | 95.6% |
| Hodgdon H4198 | <<locked>> | 80% | 41,002 psi | 68% | 2618 fps | 97.6% |
| Hodgdon TrailBoss | <<locked>> | 80% | 23,598 psi | 39% | 1552 fps | 100% |
| IMR 3031 | <<locked>> | 86% | 29,689 psi | 49% | 2523 fps | 95.2% |
| IMR 4198 | <<locked>> | 80% | 34,374 psi | 57% | 2523 fps | 99.4% |
| IMR 4227 | <<locked>> | 80% | 46,572 psi | 77% | 2690 fps | 100% |
| IMR 8208 XBR | <<locked>> | 96% | 46,209 psi | 77% | 2802 fps | 95.6% |
| Lovex D073.4 | <<locked>> | 82% | 39,537 psi | 66% | 2684 fps | 95.7% |
| Lovex D073.5 | <<locked>> | 90% | 42,235 psi | 70% | 2733 fps | 95.8% |
| Lovex D073.6 | <<locked>> | 94% | 37,391 psi | 62% | 2687 fps | 95.3% |
| Lovex S053 | <<locked>> | 80% | 45,310 psi | 75% | 2638 fps | 100% |
| Norma 200 | <<locked>> | 80% | 36,521 psi | 61% | 2602 fps | 99.6% |
| Norma 201 | <<locked>> | 98% | 44,628 psi | 74% | 2776 fps | 95.4% |
| Norma 202 | <<locked>> | 90% | 34,360 psi | 57% | 2592 fps | 95.1% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 23,395 psi | 39% | 1585 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 80% | 46,035 psi | 76% | 2717 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 86% | 38,014 psi | 63% | 2641 fps | 95% |
| Rottweil R 901 | <<locked>> | 88% | 35,911 psi | 60% | 2589 fps | 95.3% |
| Shooters World AR Plus | <<locked>> | 82% | 39,537 psi | 66% | 2684 fps | 95.7% |
| Shooters World Match Rifle | <<locked>> | 94% | 37,391 psi | 62% | 2687 fps | 95.3% |
| Shooters World Tactical Rifle | <<locked>> | 90% | 46,949 psi | 78% | 2769 fps | 95.3% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 41,858 psi | 70% | 2434 fps | 100% |
| SNPE Vectan SP 10 | 54.9 gr | 82% | 37,173 psi | 62% | 2644 fps | 95.9% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 33,170 psi | 55% | 2526 fps | 96.8% |
| SNPE Vectan Tubal 3000 | <<locked>> | 88% | 35,215 psi | 59% | 2516 fps | 95.2% |
| SNPE Vectan Tubal 5000 | <<locked>> | 92% | 32,053 psi | 53% | 2461 fps | 95.3% |
| Somchem S321 | <<locked>> | 92% | 43,758 psi | 73% | 2782 fps | 95.4% |
| Somchem S335 | <<locked>> | 86% | 32,053 psi | 53% | 2467 fps | 95.2% |
| Vihtavuori N120 | <<locked>> | 80% | 38,986 psi | 65% | 2589 fps | 100% |
| Vihtavuori N130 | <<locked>> | 80% | 31,256 psi | 52% | 2438 fps | 97.8% |
| Vihtavuori N133 | <<locked>> | 80% | 27,122 psi | 45% | 2336 fps | 95% |
| Vihtavuori N135 | <<locked>> | 86% | 26,934 psi | 45% | 2415 fps | 95.4% |
| Vihtavuori N140 | <<locked>> | 92% | 34,911 psi | 58% | 2579 fps | 95.7% |
| Vihtavuori N530 | <<locked>> | 94% | 43,569 psi | 72% | 2746 fps | 95% |
| Vihtavuori N540 | <<locked>> | 94% | 35,868 psi | 60% | 2615 fps | 95.3% |
| Winchester 748 | <<locked>> | 94% | 41,640 psi | 69% | 2776 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 55 powders for 9.3 x 66 Sako loaded with the .366 | 185gr | Reichenberg HDB Universal. Alliant Power Pro 1200-R delivers the highest muzzle velocity at 3,009 fps; across all powders the maximum-charge window runs from 1,736 fps to 3,009 fps. Accurate 2015 gives the best case fill at 100 %, and 55 of the 55 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (415 MPa), the top charges use 53–90 %, leaving at least 10 % headroom. The 185.0 gr projectile in 0.366" calls for a 1:6.0 twist; slower twists will usually not stabilise this weight. Accurate 2015, Accurate 2495, Accurate 2520 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 2219, Alliant Power Pro 1200-R, SNPE Vectan SP 10 rank at the top here: for 9.3 x 66 Sako with the .366 | 185gr | Reichenberg HDB Universal 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.