Load Specifications
Bullet:.323 | 220gr | Brenneke TOG
Bullet Manufacturer:Brenneke
Bullet Weight:220 gr
Bullet Diameter:0.323"
Bullet Length:<<locked>>
Caliber:8 mm Rem. Mag. load data
Case Length (l3):2.85"
Cartridge Length (C.O.L.):<<locked>>
Case Capacity:98 Grains of Water
Primer Size:Large Rifle Magnum (LRM)
Barrel Length:26"
Max. allowed Pressure:66,717 psi
Recommended Twist Rate:1:13.0
Load data in caliber 8 mm Rem. Mag. with .323 | 220gr | Brenneke TOG bullet and 102 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Reloder-26, ReloadSwiss RS 70 and Norma MRP.
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: 26"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2495 | <<locked>> | 82% | 58,175 psi | 87% | 2648 fps | 100% |
| Accurate 2700 | <<locked>> | 84% | 58,972 psi | 88% | 2733 fps | 99.8% |
| Accurate 3100ᴾ | <<locked>> | 100% | 57,522 psi | 86% | 2785 fps | 100% |
| Accurate 4064 | <<locked>> | 84% | 58,610 psi | 88% | 2703 fps | 100% |
| Accurate 4350 | <<locked>> | 92% | 59,930 psi | 90% | 2828 fps | 100% |
| Accurate MAGPROᴾ | <<locked>> | 100% | 60,031 psi | 90% | 2943 fps | 98.5% |
| ADI AR 2208 | <<locked>> | 86% | 58,218 psi | 87% | 2740 fps | 100% |
| ADI AR 2209 | <<locked>> | 96% | 56,579 psi | 85% | 2825 fps | 99.4% |
| ADI AR 2213ᴾ | <<locked>> | 100% | 58,117 psi | 87% | 2884 fps | 98.9% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 37,463 psi | 56% | 2569 fps | 97.6% |
| Alliant Power Pro 2000-MR | <<locked>> | 82% | 58,189 psi | 87% | 2867 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 86% | 59,379 psi | 89% | 2762 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 84% | 59,480 psi | 89% | 2785 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 94% | 60,321 psi | 90% | 2874 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 88% | 58,059 psi | 87% | 2848 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 98% | 59,756 psi | 90% | 2867 fps | 99.7% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 57,290 psi | 86% | 2877 fps | 99.6% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 54,360 psi | 81% | 2799 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 46,949 psi | 70% | 2746 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 98% | 58,668 psi | 88% | 2946 fps | 100% |
| Baschieri & Pellagri 109ᴾ | <<locked>> | 100% | 56,826 psi | 85% | 2789 fps | 95.9% |
| Bofors RP15ᴾ | <<locked>> | 100% | 52,489 psi | 79% | 2805 fps | 99% |
| Bofors RP3 | <<locked>> | 84% | 56,695 psi | 85% | 2730 fps | 100% |
| Bofors RP30ᴾ | <<locked>> | 100% | 42,786 psi | 64% | 2674 fps | 96.7% |
| Bofors RP5ᴾ | <<locked>> | 100% | 57,290 psi | 86% | 2877 fps | 99.6% |
| Bofors RP7 | <<locked>> | 90% | 59,263 psi | 89% | 2776 fps | 99.9% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 46,572 psi | 70% | 2690 fps | 97.6% |
| Hodgdon H380 | <<locked>> | 84% | 56,855 psi | 85% | 2753 fps | 100% |
| Hodgdon H414 | <<locked>> | 90% | 57,885 psi | 87% | 2828 fps | 100% |
| Hodgdon H4350 | <<locked>> | 88% | 57,435 psi | 86% | 2789 fps | 99.6% |
| Hodgdon H4831 | <<locked>> | 98% | 58,175 psi | 87% | 2825 fps | 98.4% |
| Hodgdon H4831 SC | <<locked>> | 98% | 56,942 psi | 85% | 2808 fps | 98.2% |
| Hodgdon Hybrid 100V | <<locked>> | 94% | 56,855 psi | 85% | 2746 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 58,378 psi | 88% | 2779 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 46,108 psi | 69% | 2795 fps | 98.9% |
| Hodgdon Superformance | <<locked>> | 90% | 58,523 psi | 88% | 2874 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,695 psi | 55% | 1680 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 58,494 psi | 88% | 2736 fps | 100% |
| IMR 4064 | <<locked>> | 84% | 57,696 psi | 86% | 2723 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 84% | 60,191 psi | 90% | 2762 fps | 100% |
| IMR 4350 | <<locked>> | 92% | 56,942 psi | 85% | 2762 fps | 99.8% |
| IMR 4451 Enduron | <<locked>> | 88% | 57,450 psi | 86% | 2753 fps | 99.9% |
| IMR 4831 | <<locked>> | 94% | 59,872 psi | 90% | 2812 fps | 100% |
| IMR 4895 | <<locked>> | 82% | 57,464 psi | 86% | 2762 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 98% | 59,538 psi | 89% | 2808 fps | 98.6% |
| IMR 7828 SSCᴾ | <<locked>> | 100% | 55,506 psi | 83% | 2861 fps | 98.7% |
| Lovex S060 | <<locked>> | 82% | 58,900 psi | 88% | 2700 fps | 100% |
| Lovex S062 | <<locked>> | 84% | 57,943 psi | 87% | 2713 fps | 100% |
| Lovex S065 | <<locked>> | 90% | 57,595 psi | 86% | 2746 fps | 100% |
| Lovex S070 | <<locked>> | 92% | 59,103 psi | 89% | 2792 fps | 100% |
| Lovex S071ᴾ | <<locked>> | 100% | 47,906 psi | 72% | 2651 fps | 99.7% |
| Norma 201 | <<locked>> | 82% | 59,306 psi | 89% | 2723 fps | 100% |
| Norma 202 | <<locked>> | 82% | 59,959 psi | 90% | 2710 fps | 100% |
| Norma 203B | <<locked>> | 84% | 58,755 psi | 88% | 2772 fps | 100% |
| Norma 204 | <<locked>> | 92% | 57,870 psi | 87% | 2818 fps | 99.4% |
| Norma MRP | <<locked>> | 98% | 57,029 psi | 85% | 2904 fps | 100% |
| Norma URP | <<locked>> | 92% | 58,131 psi | 87% | 2808 fps | 100% |
| Ramshot Big Game | <<locked>> | 84% | 59,756 psi | 90% | 2799 fps | 100% |
| Ramshot Grandᴾ | <<locked>> | 100% | 55,999 psi | 84% | 2877 fps | 99% |
| Ramshot Hunter | <<locked>> | 92% | 56,913 psi | 85% | 2818 fps | 100% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 50,082 psi | 75% | 2756 fps | 99.3% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,434 psi | 56% | 1722 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 84% | 56,681 psi | 85% | 2740 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 86% | 57,609 psi | 86% | 2838 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 92% | 59,756 psi | 90% | 2851 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 57,957 psi | 87% | 2881 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 45,992 psi | 69% | 2789 fps | 99.6% |
| Rottweil R 902 | <<locked>> | 84% | 60,031 psi | 90% | 2720 fps | 100% |
| Rottweil R 903 | <<locked>> | 86% | 56,768 psi | 85% | 2726 fps | 100% |
| Rottweil R 904 | <<locked>> | 96% | 58,262 psi | 87% | 2795 fps | 98.9% |
| Rottweil R 905 | <<locked>> | 98% | 59,117 psi | 89% | 2854 fps | 99.7% |
| Rottweil R 907 | <<locked>> | 90% | 59,263 psi | 89% | 2776 fps | 99.9% |
| Shooters World Long Rifle | <<locked>> | 90% | 57,595 psi | 86% | 2746 fps | 100% |
| Shooters World Precision | <<locked>> | 84% | 57,943 psi | 87% | 2713 fps | 100% |
| Shooters World SW4350 | <<locked>> | 92% | 59,103 psi | 89% | 2792 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 86% | 58,320 psi | 87% | 2789 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 59,016 psi | 88% | 2753 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 82% | 59,741 psi | 90% | 2641 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 86% | 57,305 psi | 86% | 2605 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 90% | 57,290 psi | 86% | 2703 fps | 99.9% |
| SNPE Vectan Tubal 8000 | <<locked>> | 98% | 58,624 psi | 88% | 2851 fps | 99.6% |
| Somchem S335 | <<locked>> | 82% | 59,567 psi | 89% | 2641 fps | 100% |
| Somchem S355 | <<locked>> | 88% | 60,133 psi | 90% | 2769 fps | 100% |
| Somchem S361 | <<locked>> | 96% | 60,249 psi | 90% | 2792 fps | 98.5% |
| Somchem S365 | <<locked>> | 94% | 57,798 psi | 87% | 2808 fps | 100% |
| Somchem S385 | <<locked>> | 98% | 59,683 psi | 89% | 2828 fps | 99.9% |
| Vihtavuori N133 | <<locked>> | 82% | 60,336 psi | 90% | 2621 fps | 100% |
| Vihtavuori N135 | <<locked>> | 82% | 56,956 psi | 85% | 2628 fps | 100% |
| Vihtavuori N140 | <<locked>> | 82% | 57,130 psi | 86% | 2648 fps | 100% |
| Vihtavuori N150 | <<locked>> | 88% | 57,798 psi | 87% | 2694 fps | 100% |
| Vihtavuori N160 | <<locked>> | 90% | 56,521 psi | 85% | 2753 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 55,201 psi | 83% | 2753 fps | 99.5% |
| Vihtavuori N540 | <<locked>> | 84% | 58,711 psi | 88% | 2694 fps | 100% |
| Vihtavuori N550 | <<locked>> | 92% | 59,263 psi | 89% | 2808 fps | 100% |
| Vihtavuori N555 | <<locked>> | 98% | 56,782 psi | 85% | 2822 fps | 100% |
| Vihtavuori N560 | <<locked>> | 98% | 57,145 psi | 86% | 2900 fps | 98.6% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 48,863 psi | 73% | 2756 fps | 97.4% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 60,060 psi | 90% | 2766 fps | 100% |
| Winchester 760 | <<locked>> | 90% | 58,117 psi | 87% | 2831 fps | 100% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 50,038 psi | 75% | 2874 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 82% | 59,437 psi | 89% | 2762 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 60,104 psi | 90% | 2828 fps | 99.6% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 26"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2495 | <<locked>> | 80% | 54,650 psi | 82% | 2602 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 51,822 psi | 78% | 2631 fps | 99.3% |
| Accurate 3100 | <<locked>> | 80% | 29,399 psi | 44% | 2274 fps | 95.5% |
| Accurate 4064 | <<locked>> | 80% | 51,822 psi | 78% | 2615 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 39,827 psi | 60% | 2516 fps | 99.6% |
| Accurate MAGPRO | <<locked>> | 92% | 45,223 psi | 68% | 2703 fps | 95.5% |
| ADI AR 2208 | <<locked>> | 80% | 48,472 psi | 73% | 2598 fps | 100% |
| ADI AR 2209 | <<locked>> | 84% | 38,305 psi | 57% | 2500 fps | 95.8% |
| ADI AR 2213 | <<locked>> | 90% | 41,698 psi | 63% | 2598 fps | 95.4% |
| ADI AR 2225 | <<locked>> | 96% | 33,054 psi | 50% | 2454 fps | 95.7% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 54,099 psi | 81% | 2812 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 49,182 psi | 74% | 2621 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 52,446 psi | 79% | 2687 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 38,551 psi | 58% | 2526 fps | 99.7% |
| Alliant Reloder-17 | <<locked>> | 80% | 43,845 psi | 66% | 2638 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 82% | 35,897 psi | 54% | 2448 fps | 95% |
| Alliant Reloder-22 | <<locked>> | 86% | 36,042 psi | 54% | 2497 fps | 95.3% |
| Alliant Reloder-23 | <<locked>> | 80% | 28,456 psi | 43% | 2306 fps | 98.6% |
| Alliant Reloder-25 | <<locked>> | 84% | 28,297 psi | 42% | 2313 fps | 95.3% |
| Alliant Reloder-26 | 66.3 gr | 80% | 30,327 psi | 45% | 2418 fps | 97.4% |
| Baschieri & Pellagri 109 | <<locked>> | 98% | 53,476 psi | 80% | 2736 fps | 95.1% |
| Bofors RP15 | <<locked>> | 90% | 38,058 psi | 57% | 2539 fps | 95.9% |
| Bofors RP3 | <<locked>> | 80% | 49,777 psi | 75% | 2635 fps | 100% |
| Bofors RP30 | <<locked>> | 96% | 37,710 psi | 57% | 2566 fps | 95% |
| Bofors RP5 | <<locked>> | 86% | 36,042 psi | 54% | 2497 fps | 95.3% |
| Bofors RP7 | <<locked>> | 80% | 43,598 psi | 65% | 2526 fps | 98.2% |
| Hodgdon H1000 | <<locked>> | 96% | 40,770 psi | 61% | 2575 fps | 96% |
| Hodgdon H380 | <<locked>> | 80% | 50,038 psi | 75% | 2651 fps | 100% |
| Hodgdon H414 | <<locked>> | 80% | 41,669 psi | 62% | 2562 fps | 98.4% |
| Hodgdon H4350 | <<locked>> | 80% | 44,585 psi | 67% | 2579 fps | 97.8% |
| Hodgdon H4831 | <<locked>> | 90% | 44,469 psi | 67% | 2605 fps | 95.6% |
| Hodgdon H4831 SC | <<locked>> | 90% | 43,685 psi | 65% | 2589 fps | 95.3% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 36,172 psi | 54% | 2418 fps | 99.9% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 54,650 psi | 82% | 2730 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 92% | 35,694 psi | 54% | 2556 fps | 95.5% |
| Hodgdon Superformance | <<locked>> | 80% | 40,538 psi | 61% | 2579 fps | 97.9% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,456 psi | 41% | 1499 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 55,056 psi | 83% | 2694 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 51,024 psi | 76% | 2628 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 80% | 53,142 psi | 80% | 2661 fps | 99.7% |
| IMR 4350 | <<locked>> | 80% | 39,175 psi | 59% | 2461 fps | 97.2% |
| IMR 4451 Enduron | <<locked>> | 80% | 44,947 psi | 67% | 2552 fps | 98.8% |
| IMR 4831 | <<locked>> | 80% | 38,174 psi | 57% | 2470 fps | 99.5% |
| IMR 4895 | <<locked>> | 80% | 53,795 psi | 81% | 2713 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 88% | 43,613 psi | 65% | 2549 fps | 95.5% |
| IMR 7828 SSC | <<locked>> | 92% | 42,583 psi | 64% | 2631 fps | 95.8% |
| Lovex S060 | <<locked>> | 80% | 55,448 psi | 83% | 2654 fps | 100% |
| Lovex S062 | <<locked>> | 80% | 51,256 psi | 77% | 2621 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 42,540 psi | 64% | 2507 fps | 99.3% |
| Lovex S070 | <<locked>> | 80% | 40,640 psi | 61% | 2490 fps | 98.2% |
| Lovex S071 | <<locked>> | 84% | 28,877 psi | 43% | 2260 fps | 95.3% |
| Norma 201 | <<locked>> | 80% | 55,767 psi | 84% | 2674 fps | 100% |
| Norma 202 | <<locked>> | 80% | 56,434 psi | 85% | 2667 fps | 100% |
| Norma 203B | <<locked>> | 80% | 51,779 psi | 78% | 2674 fps | 100% |
| Norma 204 | <<locked>> | 80% | 38,566 psi | 58% | 2487 fps | 95.8% |
| Norma MRP | 66 gr | 82% | 32,793 psi | 49% | 2444 fps | 95.6% |
| Norma URP | <<locked>> | 80% | 39,392 psi | 59% | 2507 fps | 99.5% |
| Ramshot Big Game | <<locked>> | 80% | 52,243 psi | 78% | 2697 fps | 100% |
| Ramshot Grand | <<locked>> | 90% | 39,320 psi | 59% | 2575 fps | 95.1% |
| Ramshot Hunter | <<locked>> | 80% | 38,218 psi | 57% | 2500 fps | 98.3% |
| Ramshot Magnum | <<locked>> | 90% | 35,012 psi | 52% | 2464 fps | 95.6% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,007 psi | 42% | 1539 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 49,850 psi | 75% | 2638 fps | 99.7% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 46,557 psi | 70% | 2680 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 39,682 psi | 59% | 2539 fps | 99.5% |
| ReloadSwiss RS 70 | 65.7 gr | 80% | 38,159 psi | 57% | 2546 fps | 99.2% |
| ReloadSwiss RS 76 | <<locked>> | 90% | 32,518 psi | 49% | 2470 fps | 95.2% |
| Rottweil R 902 | <<locked>> | 80% | 53,113 psi | 80% | 2631 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 46,789 psi | 70% | 2585 fps | 100% |
| Rottweil R 904 | <<locked>> | 84% | 39,914 psi | 60% | 2484 fps | 95.1% |
| Rottweil R 905 | <<locked>> | 84% | 37,304 psi | 56% | 2480 fps | 95.8% |
| Rottweil R 907 | <<locked>> | 80% | 43,598 psi | 65% | 2526 fps | 98.2% |
| Shooters World Long Rifle | <<locked>> | 80% | 42,540 psi | 64% | 2507 fps | 99.3% |
| Shooters World Precision | <<locked>> | 80% | 51,256 psi | 77% | 2621 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 40,640 psi | 61% | 2490 fps | 98.2% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 47,921 psi | 72% | 2638 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 55,376 psi | 83% | 2707 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 56,376 psi | 85% | 2602 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 47,863 psi | 72% | 2480 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 41,466 psi | 62% | 2451 fps | 98.3% |
| SNPE Vectan Tubal 8000 | <<locked>> | 84% | 36,956 psi | 55% | 2477 fps | 95.7% |
| Somchem S335 | <<locked>> | 80% | 56,115 psi | 84% | 2598 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 47,065 psi | 71% | 2585 fps | 100% |
| Somchem S361 | <<locked>> | 86% | 43,381 psi | 65% | 2526 fps | 95.2% |
| Somchem S365 | <<locked>> | 80% | 36,085 psi | 54% | 2470 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 33,301 psi | 50% | 2362 fps | 95.2% |
| Vihtavuori N133 | <<locked>> | 80% | 56,985 psi | 85% | 2582 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 53,650 psi | 80% | 2589 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 53,519 psi | 80% | 2602 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 44,831 psi | 67% | 2510 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 40,872 psi | 61% | 2503 fps | 99.7% |
| Vihtavuori N165 | <<locked>> | 86% | 34,896 psi | 52% | 2395 fps | 95.4% |
| Vihtavuori N540 | <<locked>> | 80% | 51,895 psi | 78% | 2605 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 40,364 psi | 61% | 2510 fps | 99.5% |
| Vihtavuori N555 | <<locked>> | 80% | 31,589 psi | 47% | 2375 fps | 98.6% |
| Vihtavuori N560 | <<locked>> | 90% | 43,453 psi | 65% | 2664 fps | 95.7% |
| Vihtavuori N565 | <<locked>> | 96% | 42,786 psi | 64% | 2644 fps | 95.8% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 39,813 psi | 60% | 2474 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 41,829 psi | 63% | 2566 fps | 98.4% |
| Winchester StaBALL HD | <<locked>> | 80% | 25,092 psi | 38% | 2297 fps | 98.2% |
| Winchester StaBALL Match | <<locked>> | 80% | 55,709 psi | 84% | 2713 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 86% | 37,202 psi | 56% | 2451 fps | 95.5% |
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 102 powders for 8 mm Rem. Mag. loaded with the .323 | 220gr | Brenneke TOG. Alliant Reloder-26 delivers the highest muzzle velocity at 2,946 fps; across all powders the maximum-charge window runs from 1,680 fps to 2,946 fps. Accurate 3100 gives the best case fill at 100 %, and 102 of the 102 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (460 MPa), the top charges use 55–90 %, leaving at least 10 % headroom. The 220.0 gr projectile in 0.323" calls for a 1:13.0 twist; slower twists will usually not stabilise this weight. Accurate 3100, Accurate MAGPRO, ADI AR 2213 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 Reloder-26, ReloadSwiss RS 70, Norma MRP rank at the top here: for 8 mm Rem. Mag. with the .323 | 220gr | Brenneke TOG 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.