Load Specifications
Bullet:.375 | 240gr | Atomic 29 HP
Bullet Manufacturer:Atomic 29
Bullet Weight:240 gr
Bullet Diameter:0.375"
Bullet Length:<<locked>>
Caliber:9.5 x 66 SE v. Hofe load data
Case Length (l3):2.598"
Cartridge Length (C.O.L.):<<locked>>
Case Capacity:106 Grains of Water
Primer Size:Large Rifle Magnum (LRM)
Barrel Length:25.6"
Max. allowed Pressure:63,817 psi
Recommended Twist Rate:1:6.0
Load data in caliber 9.5 x 66 SE v. Hofe with .375 | 240gr | Atomic 29 HP bullet and 105 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Power Pro 2000-MR, ReloadSwiss RS 52 and ReloadSwiss RS 60.
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: 25.6"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2015 | <<locked>> | 88% | 54,969 psi | 86% | 2766 fps | 100% |
| Accurate 2460 | <<locked>> | 86% | 57,058 psi | 89% | 2841 fps | 100% |
| Accurate 2495 | <<locked>> | 94% | 55,825 psi | 87% | 2825 fps | 100% |
| Accurate 2520 | <<locked>> | 88% | 55,201 psi | 87% | 2851 fps | 100% |
| Accurate 2700 | <<locked>> | 94% | 56,898 psi | 89% | 2825 fps | 96.4% |
| Accurate 4064 | <<locked>> | 96% | 55,535 psi | 87% | 2867 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 47,993 psi | 75% | 2831 fps | 98.4% |
| Accurate LT-30 | <<locked>> | 82% | 54,534 psi | 85% | 2713 fps | 100% |
| Accurate LT-32 | <<locked>> | 82% | 54,926 psi | 86% | 2736 fps | 100% |
| ADI AR 2206H | <<locked>> | 92% | 57,595 psi | 90% | 2910 fps | 99.9% |
| ADI AR 2208 | <<locked>> | 96% | 55,187 psi | 86% | 2858 fps | 99.5% |
| ADI AR 2219 | <<locked>> | 82% | 55,448 psi | 87% | 2835 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 90% | 56,797 psi | 89% | 2864 fps | 100% |
| Alliant AR-Comp | <<locked>> | 90% | 57,029 psi | 89% | 2838 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 84% | 54,839 psi | 86% | 2920 fps | 99.9% |
| Alliant Power Pro 2000-MR | <<locked>> | 94% | 57,508 psi | 90% | 3031 fps | 99.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 96% | 54,360 psi | 85% | 2874 fps | 100% |
| Alliant Reloder-10x | <<locked>> | 84% | 54,810 psi | 86% | 2772 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 94% | 55,347 psi | 87% | 2900 fps | 99.6% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 47,514 psi | 74% | 2838 fps | 98.5% |
| Alliant Reloder-17ᴾ | <<locked>> | 100% | 55,361 psi | 87% | 2995 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 84% | 57,421 psi | 90% | 2756 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 92% | 57,624 psi | 90% | 2927 fps | 99.5% |
| Bofors RP3 | <<locked>> | 96% | 54,810 psi | 86% | 2890 fps | 100% |
| Bofors RP7ᴾ | <<locked>> | 100% | 55,579 psi | 87% | 2851 fps | 96.5% |
| Hodgdon Benchmark | <<locked>> | 88% | 55,579 psi | 87% | 2802 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 90% | 55,825 psi | 87% | 2894 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 86% | 54,157 psi | 85% | 2940 fps | 99.6% |
| Hodgdon H322 | <<locked>> | 86% | 57,711 psi | 90% | 2861 fps | 100% |
| Hodgdon H335 | <<locked>> | 84% | 55,071 psi | 86% | 2838 fps | 100% |
| Hodgdon H380 | <<locked>> | 96% | 56,478 psi | 89% | 2904 fps | 99% |
| Hodgdon H414ᴾ | <<locked>> | 100% | 51,590 psi | 81% | 2884 fps | 96.5% |
| Hodgdon H4350ᴾ | <<locked>> | 100% | 56,681 psi | 89% | 2907 fps | 96% |
| Hodgdon H4895 | <<locked>> | 90% | 54,491 psi | 85% | 2871 fps | 99.9% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 43,613 psi | 68% | 2720 fps | 98.9% |
| Hodgdon LEVERevolution | <<locked>> | 94% | 57,319 psi | 90% | 2953 fps | 100% |
| Hodgdon Superformanceᴾ | <<locked>> | 100% | 53,069 psi | 83% | 2917 fps | 96.1% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,693 psi | 54% | 1719 fps | 100% |
| Hodgdon VARGET | <<locked>> | 92% | 56,231 psi | 88% | 2877 fps | 99.9% |
| IMR 3031 | <<locked>> | 92% | 57,595 psi | 90% | 2904 fps | 100% |
| IMR 4064 | <<locked>> | 94% | 54,650 psi | 86% | 2841 fps | 99.6% |
| IMR 4166 Enduron | <<locked>> | 92% | 55,332 psi | 87% | 2822 fps | 97% |
| IMR 4198 | <<locked>> | 84% | 55,230 psi | 87% | 2733 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 98% | 54,346 psi | 85% | 2835 fps | 96.8% |
| IMR 4831ᴾ | <<locked>> | 100% | 45,730 psi | 72% | 2772 fps | 98% |
| IMR 4895 | <<locked>> | 94% | 56,768 psi | 89% | 2933 fps | 99.9% |
| IMR 8208 XBR | <<locked>> | 90% | 56,797 psi | 89% | 2864 fps | 100% |
| Lovex D073.5 | <<locked>> | 86% | 56,971 psi | 89% | 2851 fps | 100% |
| Lovex D073.6 | <<locked>> | 92% | 56,855 psi | 89% | 2884 fps | 100% |
| Lovex S060 | <<locked>> | 92% | 57,609 psi | 90% | 2838 fps | 99.9% |
| Lovex S062 | <<locked>> | 96% | 57,493 psi | 90% | 2884 fps | 100% |
| Lovex S065ᴾ | <<locked>> | 100% | 53,113 psi | 83% | 2825 fps | 97.9% |
| Lovex S070ᴾ | <<locked>> | 100% | 50,401 psi | 79% | 2802 fps | 96.4% |
| Norma 201 | <<locked>> | 92% | 55,985 psi | 88% | 2854 fps | 100% |
| Norma 202 | <<locked>> | 92% | 56,782 psi | 89% | 2861 fps | 100% |
| Norma 203B | <<locked>> | 94% | 54,433 psi | 85% | 2887 fps | 99.8% |
| Norma URPᴾ | <<locked>> | 100% | 47,935 psi | 75% | 2825 fps | 98.3% |
| Ramshot Big Game | <<locked>> | 94% | 55,071 psi | 86% | 2910 fps | 99.8% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 47,152 psi | 74% | 2815 fps | 96.4% |
| Ramshot TAC | <<locked>> | 90% | 57,566 psi | 90% | 2884 fps | 98.7% |
| Ramshot Wild Boar | <<locked>> | 90% | 56,840 psi | 89% | 2904 fps | 99.9% |
| Ramshot X-Terminator | <<locked>> | 86% | 54,534 psi | 85% | 2818 fps | 99.7% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 34,896 psi | 55% | 1759 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 86% | 56,550 psi | 89% | 2851 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 96% | 57,159 psi | 90% | 2884 fps | 97.9% |
| ReloadSwiss RS 52 | <<locked>> | 92% | 55,506 psi | 87% | 2966 fps | 99.6% |
| ReloadSwiss RS 60 | <<locked>> | 98% | 55,158 psi | 86% | 2999 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 47,848 psi | 75% | 2851 fps | 98.1% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 48,791 psi | 76% | 2877 fps | 97.7% |
| Rottweil R 901 | <<locked>> | 90% | 56,898 psi | 89% | 2838 fps | 100% |
| Rottweil R 902 | <<locked>> | 94% | 56,521 psi | 89% | 2851 fps | 100% |
| Rottweil R 903 | <<locked>> | 98% | 54,447 psi | 85% | 2877 fps | 99.9% |
| Rottweil R 907ᴾ | <<locked>> | 100% | 55,579 psi | 87% | 2851 fps | 96.5% |
| Shooters World Long Rifleᴾ | <<locked>> | 100% | 53,113 psi | 83% | 2825 fps | 97.9% |
| Shooters World Match Rifle | <<locked>> | 92% | 56,855 psi | 89% | 2884 fps | 100% |
| Shooters World Precision | <<locked>> | 96% | 57,493 psi | 90% | 2884 fps | 100% |
| Shooters World SW4350ᴾ | <<locked>> | 100% | 50,401 psi | 79% | 2802 fps | 96.4% |
| Shooters World Tactical Rifle | <<locked>> | 84% | 56,478 psi | 89% | 2822 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 82% | 55,651 psi | 87% | 2841 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 98% | 56,811 psi | 89% | 2943 fps | 99.9% |
| SNPE Vectan SP 3 | <<locked>> | 84% | 55,840 psi | 88% | 2795 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 90% | 55,535 psi | 87% | 2858 fps | 98.8% |
| SNPE Vectan SP 9 | <<locked>> | 92% | 56,072 psi | 88% | 2884 fps | 99.8% |
| SNPE Vectan Tubal 3000 | <<locked>> | 90% | 54,955 psi | 86% | 2753 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 96% | 54,694 psi | 86% | 2746 fps | 100% |
| SNPE Vectan Tubal 7000ᴾ | <<locked>> | 100% | 53,780 psi | 84% | 2779 fps | 96.7% |
| Somchem S321 | <<locked>> | 86% | 54,650 psi | 86% | 2851 fps | 100% |
| Somchem S335 | <<locked>> | 92% | 57,174 psi | 90% | 2792 fps | 100% |
| Somchem S341 | <<locked>> | 90% | 54,998 psi | 86% | 2851 fps | 99.7% |
| Somchem S355 | <<locked>> | 98% | 55,042 psi | 86% | 2877 fps | 99.9% |
| Somchem S365ᴾ | <<locked>> | 100% | 42,467 psi | 67% | 2772 fps | 99.7% |
| Vihtavuori N130 | <<locked>> | 86% | 54,650 psi | 86% | 2720 fps | 100% |
| Vihtavuori N133 | <<locked>> | 90% | 55,027 psi | 86% | 2740 fps | 100% |
| Vihtavuori N135 | <<locked>> | 94% | 55,767 psi | 87% | 2815 fps | 100% |
| Vihtavuori N140 | <<locked>> | 94% | 57,261 psi | 90% | 2835 fps | 100% |
| Vihtavuori N150ᴾ | <<locked>> | 100% | 56,985 psi | 89% | 2858 fps | 100% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 50,560 psi | 79% | 2828 fps | 98.6% |
| Vihtavuori N530 | <<locked>> | 90% | 57,682 psi | 90% | 2867 fps | 100% |
| Vihtavuori N540 | <<locked>> | 94% | 55,434 psi | 87% | 2835 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 49,516 psi | 78% | 2831 fps | 98.3% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 35,273 psi | 55% | 2631 fps | 95.9% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 51,561 psi | 81% | 2812 fps | 99.8% |
| Winchester 748 | <<locked>> | 90% | 56,942 psi | 89% | 2913 fps | 100% |
| Winchester 760ᴾ | <<locked>> | 100% | 51,764 psi | 81% | 2887 fps | 96.6% |
| Winchester StaBALL Match | <<locked>> | 92% | 55,912 psi | 88% | 2894 fps | 100% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 25.6"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2015 | <<locked>> | 80% | 42,627 psi | 67% | 2582 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 46,369 psi | 73% | 2687 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 34,635 psi | 54% | 2487 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 41,611 psi | 65% | 2641 fps | 99.8% |
| Accurate 2700 | <<locked>> | 92% | 53,113 psi | 83% | 2769 fps | 95.6% |
| Accurate 4064 | <<locked>> | 80% | 32,793 psi | 51% | 2474 fps | 99.3% |
| Accurate 4350 | <<locked>> | 92% | 35,998 psi | 56% | 2602 fps | 95.4% |
| Accurate LT-30 | <<locked>> | 80% | 51,256 psi | 80% | 2664 fps | 100% |
| Accurate LT-32 | <<locked>> | 80% | 51,648 psi | 81% | 2690 fps | 100% |
| ADI AR 2206H | <<locked>> | 80% | 39,233 psi | 61% | 2595 fps | 97.6% |
| ADI AR 2208 | <<locked>> | 82% | 35,650 psi | 56% | 2500 fps | 95.7% |
| ADI AR 2219 | <<locked>> | 80% | 51,808 psi | 81% | 2782 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 80% | 41,350 psi | 65% | 2612 fps | 99% |
| Alliant AR-Comp | <<locked>> | 80% | 40,582 psi | 64% | 2608 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 48,051 psi | 75% | 2812 fps | 99.5% |
| Alliant Power Pro 2000-MR | 71 gr | 80% | 35,317 psi | 55% | 2598 fps | 95.1% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 32,416 psi | 51% | 2461 fps | 96.5% |
| Alliant Reloder-10x | <<locked>> | 80% | 48,298 psi | 76% | 2680 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 35,085 psi | 55% | 2523 fps | 95.8% |
| Alliant Reloder-16 | <<locked>> | 92% | 37,028 psi | 58% | 2618 fps | 95.6% |
| Alliant Reloder-17 | <<locked>> | 84% | 32,097 psi | 50% | 2526 fps | 95.5% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 50,459 psi | 79% | 2664 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 38,290 psi | 60% | 2592 fps | 96.2% |
| Bofors RP3 | <<locked>> | 80% | 31,618 psi | 50% | 2457 fps | 96.4% |
| Bofors RP7 | <<locked>> | 96% | 49,066 psi | 77% | 2749 fps | 95.1% |
| Hodgdon Benchmark | <<locked>> | 80% | 43,352 psi | 68% | 2608 fps | 99.5% |
| Hodgdon BL-C2 | <<locked>> | 80% | 39,465 psi | 62% | 2621 fps | 99.1% |
| Hodgdon CFE223 | <<locked>> | 80% | 43,540 psi | 68% | 2759 fps | 98.1% |
| Hodgdon H322 | <<locked>> | 80% | 47,282 psi | 74% | 2713 fps | 100% |
| Hodgdon H335 | <<locked>> | 80% | 48,153 psi | 75% | 2736 fps | 100% |
| Hodgdon H380 | <<locked>> | 84% | 37,681 psi | 59% | 2572 fps | 95.2% |
| Hodgdon H414 | <<locked>> | 98% | 48,254 psi | 76% | 2828 fps | 95.8% |
| Hodgdon H4350 | <<locked>> | 98% | 53,084 psi | 83% | 2851 fps | 95.2% |
| Hodgdon H4895 | <<locked>> | 80% | 39,537 psi | 62% | 2608 fps | 98.2% |
| Hodgdon Hybrid 100V | <<locked>> | 90% | 31,604 psi | 50% | 2457 fps | 95.4% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 35,491 psi | 56% | 2569 fps | 97.6% |
| Hodgdon Superformance | <<locked>> | 98% | 49,414 psi | 77% | 2858 fps | 95.2% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,715 psi | 40% | 1539 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 38,145 psi | 60% | 2562 fps | 97.8% |
| IMR 3031 | <<locked>> | 80% | 38,725 psi | 61% | 2612 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 34,940 psi | 55% | 2477 fps | 95.8% |
| IMR 4166 Enduron | <<locked>> | 88% | 48,689 psi | 76% | 2713 fps | 95.6% |
| IMR 4198 | <<locked>> | 80% | 49,023 psi | 77% | 2648 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 94% | 48,022 psi | 75% | 2733 fps | 95.4% |
| IMR 4831 | <<locked>> | 92% | 34,969 psi | 55% | 2556 fps | 95% |
| IMR 4895 | <<locked>> | 80% | 35,897 psi | 56% | 2556 fps | 96.8% |
| IMR 8208 XBR | <<locked>> | 80% | 41,350 psi | 65% | 2612 fps | 99% |
| Lovex D073.5 | <<locked>> | 80% | 46,325 psi | 73% | 2694 fps | 99.9% |
| Lovex D073.6 | <<locked>> | 80% | 37,579 psi | 59% | 2572 fps | 99.5% |
| Lovex S060 | <<locked>> | 80% | 39,914 psi | 63% | 2543 fps | 97.7% |
| Lovex S062 | <<locked>> | 80% | 34,621 psi | 54% | 2484 fps | 97.6% |
| Lovex S065 | <<locked>> | 92% | 41,263 psi | 65% | 2618 fps | 95.3% |
| Lovex S070 | <<locked>> | 98% | 47,195 psi | 74% | 2746 fps | 95.6% |
| Norma 201 | <<locked>> | 80% | 38,218 psi | 60% | 2549 fps | 98.5% |
| Norma 202 | <<locked>> | 80% | 38,508 psi | 60% | 2566 fps | 99.8% |
| Norma 203B | <<locked>> | 80% | 34,447 psi | 54% | 2513 fps | 96.2% |
| Norma URP | <<locked>> | 92% | 36,811 psi | 58% | 2608 fps | 95.4% |
| Ramshot Big Game | <<locked>> | 80% | 33,881 psi | 53% | 2516 fps | 95.7% |
| Ramshot Hunter | <<locked>> | 98% | 44,193 psi | 69% | 2759 fps | 95.6% |
| Ramshot TAC | <<locked>> | 80% | 41,220 psi | 65% | 2605 fps | 95.5% |
| Ramshot Wild Boar | <<locked>> | 80% | 40,466 psi | 63% | 2628 fps | 97.8% |
| Ramshot X-Terminator | <<locked>> | 80% | 44,788 psi | 70% | 2657 fps | 98.5% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 25,860 psi | 41% | 1575 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 46,456 psi | 73% | 2697 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 88% | 43,772 psi | 69% | 2667 fps | 95.1% |
| ReloadSwiss RS 52 | 68.9 gr | 80% | 36,318 psi | 57% | 2618 fps | 96.2% |
| ReloadSwiss RS 60 | 70 gr | 80% | 29,921 psi | 47% | 2477 fps | 97.2% |
| ReloadSwiss RS 62 | <<locked>> | 94% | 38,711 psi | 61% | 2677 fps | 95.8% |
| ReloadSwiss RS 70 | <<locked>> | 94% | 39,697 psi | 62% | 2690 fps | 95% |
| Rottweil R 901 | <<locked>> | 80% | 41,989 psi | 66% | 2602 fps | 99.9% |
| Rottweil R 902 | <<locked>> | 80% | 36,361 psi | 57% | 2503 fps | 98% |
| Rottweil R 903 | <<locked>> | 80% | 29,762 psi | 47% | 2402 fps | 95.2% |
| Rottweil R 907 | <<locked>> | 96% | 49,066 psi | 77% | 2749 fps | 95.1% |
| Shooters World Long Rifle | <<locked>> | 92% | 41,263 psi | 65% | 2618 fps | 95.3% |
| Shooters World Match Rifle | <<locked>> | 80% | 37,579 psi | 59% | 2572 fps | 99.5% |
| Shooters World Precision | <<locked>> | 80% | 34,621 psi | 54% | 2484 fps | 97.6% |
| Shooters World SW4350 | <<locked>> | 98% | 47,195 psi | 74% | 2746 fps | 95.6% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 49,081 psi | 77% | 2713 fps | 99.7% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 52,156 psi | 82% | 2795 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 33,243 psi | 52% | 2507 fps | 95.5% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 49,327 psi | 77% | 2703 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 39,160 psi | 61% | 2575 fps | 95.5% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 37,869 psi | 59% | 2566 fps | 97.2% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 40,089 psi | 63% | 2520 fps | 99.9% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 32,924 psi | 52% | 2385 fps | 99.6% |
| SNPE Vectan Tubal 7000 | <<locked>> | 96% | 46,833 psi | 73% | 2671 fps | 95.2% |
| Somchem S321 | <<locked>> | 80% | 44,440 psi | 70% | 2687 fps | 99.6% |
| Somchem S335 | <<locked>> | 80% | 39,421 psi | 62% | 2520 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 39,015 psi | 61% | 2579 fps | 97.4% |
| Somchem S355 | <<locked>> | 80% | 30,821 psi | 48% | 2411 fps | 95.4% |
| Somchem S365 | <<locked>> | 88% | 28,718 psi | 45% | 2441 fps | 95.8% |
| Vihtavuori N130 | <<locked>> | 80% | 45,513 psi | 71% | 2589 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 40,321 psi | 63% | 2520 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 35,534 psi | 56% | 2497 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 36,448 psi | 57% | 2503 fps | 99.8% |
| Vihtavuori N150 | <<locked>> | 80% | 29,298 psi | 46% | 2356 fps | 96.4% |
| Vihtavuori N160 | <<locked>> | 90% | 36,187 psi | 57% | 2556 fps | 95% |
| Vihtavuori N530 | <<locked>> | 80% | 41,205 psi | 65% | 2605 fps | 99% |
| Vihtavuori N540 | <<locked>> | 80% | 34,925 psi | 55% | 2487 fps | 99.3% |
| Vihtavuori N550 | <<locked>> | 92% | 37,884 psi | 59% | 2612 fps | 95.5% |
| Vihtavuori N555 | <<locked>> | 98% | 33,054 psi | 52% | 2575 fps | 95% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 32,213 psi | 50% | 2434 fps | 95.8% |
| Winchester 748 | <<locked>> | 80% | 40,364 psi | 63% | 2648 fps | 99.4% |
| Winchester 760 | <<locked>> | 96% | 45,281 psi | 71% | 2772 fps | 95% |
| Winchester StaBALL Match | <<locked>> | 80% | 36,985 psi | 58% | 2562 fps | 97.6% |
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 105 powders for 9.5 x 66 SE v. Hofe loaded with the .375 | 240gr | Atomic 29 HP. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 3,031 fps; across all powders the maximum-charge window runs from 1,719 fps to 3,031 fps. Accurate 4350 gives the best case fill at 100 %, and 105 of the 105 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (440 MPa), the top charges use 54–90 %, leaving at least 10 % headroom. The 240.0 gr projectile in 0.375" calls for a 1:6.0 twist; slower twists will usually not stabilise this weight. Accurate 4350, Alliant Reloder-16, Alliant Reloder-17 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 Power Pro 2000-MR, ReloadSwiss RS 52, ReloadSwiss RS 60 rank at the top here: for 9.5 x 66 SE v. Hofe with the .375 | 240gr | Atomic 29 HP 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.