Load Specifications
Load data in caliber 8 x 65 RS with .323 | 180gr | Lapua Naturalis bullet and 91 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.
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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% | 51,271 psi | 87% | 2667 fps | 100% |
| Accurate 2460 | <<locked>> | 86% | 53,069 psi | 90% | 2736 fps | 100% |
| Accurate 2495 | <<locked>> | 94% | 51,068 psi | 87% | 2720 fps | 100% |
| Accurate 2520 | <<locked>> | 88% | 50,923 psi | 87% | 2743 fps | 100% |
| Accurate 4064 | <<locked>> | 96% | 50,850 psi | 87% | 2756 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 43,366 psi | 74% | 2700 fps | 96.9% |
| Accurate LT-30 | <<locked>> | 82% | 51,576 psi | 88% | 2615 fps | 100% |
| Accurate LT-32 | <<locked>> | 82% | 51,967 psi | 88% | 2638 fps | 100% |
| Accurate LT-32 | <<locked>> | 82% | 51,967 psi | 88% | 2638 fps | 100% |
| ADI AR 2206H | <<locked>> | 90% | 50,372 psi | 86% | 2746 fps | 99.1% |
| ADI AR 2208 | <<locked>> | 96% | 51,401 psi | 88% | 2743 fps | 98.8% |
| ADI AR 2219 | <<locked>> | 82% | 51,779 psi | 88% | 2733 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 90% | 53,156 psi | 90% | 2756 fps | 99.9% |
| Alliant AR-Comp | <<locked>> | 90% | 52,460 psi | 89% | 2736 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 84% | 51,024 psi | 87% | 2805 fps | 99.6% |
| Alliant Power Pro 2000-MR | <<locked>> | 92% | 49,472 psi | 84% | 2841 fps | 98.5% |
| Alliant Reloder- TS 15.5 | <<locked>> | 96% | 50,256 psi | 86% | 2762 fps | 99.6% |
| Alliant Reloder-10x | <<locked>> | 84% | 51,329 psi | 87% | 2674 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 94% | 51,314 psi | 87% | 2782 fps | 98.9% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 44,019 psi | 75% | 2713 fps | 97.1% |
| Alliant Reloder-17ᴾ | <<locked>> | 100% | 50,894 psi | 87% | 2867 fps | 99.6% |
| Baschieri & Pellagri 106 | <<locked>> | 82% | 50,589 psi | 86% | 2615 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 90% | 49,937 psi | 85% | 2756 fps | 98.3% |
| Bofors RP3 | <<locked>> | 96% | 50,299 psi | 86% | 2772 fps | 99.7% |
| Hodgdon Benchmark | <<locked>> | 88% | 52,170 psi | 89% | 2697 fps | 99.9% |
| Hodgdon BL-C2 | <<locked>> | 90% | 51,503 psi | 88% | 2782 fps | 99.9% |
| Hodgdon CFE223 | <<locked>> | 86% | 49,690 psi | 85% | 2815 fps | 98.8% |
| Hodgdon H322 | <<locked>> | 84% | 50,314 psi | 86% | 2710 fps | 100% |
| Hodgdon H335 | <<locked>> | 84% | 51,445 psi | 88% | 2740 fps | 100% |
| Hodgdon H380 | <<locked>> | 96% | 52,112 psi | 89% | 2782 fps | 98% |
| Hodgdon H4895 | <<locked>> | 90% | 50,792 psi | 86% | 2759 fps | 99.5% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 39,972 psi | 68% | 2598 fps | 97.7% |
| Hodgdon LEVERevolution | <<locked>> | 94% | 52,504 psi | 89% | 2835 fps | 99.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,229 psi | 58% | 1663 fps | 100% |
| Hodgdon VARGET | <<locked>> | 92% | 52,446 psi | 89% | 2766 fps | 99.6% |
| IMR 3031 | <<locked>> | 90% | 49,879 psi | 85% | 2749 fps | 100% |
| IMR 4064 | <<locked>> | 94% | 50,821 psi | 87% | 2726 fps | 98.9% |
| IMR 4198 | <<locked>> | 84% | 52,228 psi | 89% | 2641 fps | 100% |
| IMR 4831ᴾ | <<locked>> | 100% | 41,684 psi | 71% | 2651 fps | 96.6% |
| IMR 4895 | <<locked>> | 94% | 52,562 psi | 89% | 2815 fps | 99.4% |
| IMR 8208 XBR | <<locked>> | 90% | 53,156 psi | 90% | 2756 fps | 99.9% |
| Lovex D073.5 | <<locked>> | 86% | 52,939 psi | 90% | 2743 fps | 100% |
| Lovex D073.6 | <<locked>> | 92% | 52,330 psi | 89% | 2772 fps | 100% |
| Lovex S060 | <<locked>> | 90% | 50,966 psi | 87% | 2684 fps | 99.2% |
| Lovex S062 | <<locked>> | 94% | 50,009 psi | 85% | 2723 fps | 99.7% |
| Lovex S065ᴾ | <<locked>> | 100% | 49,008 psi | 83% | 2703 fps | 96.6% |
| Norma 201 | <<locked>> | 92% | 52,214 psi | 89% | 2746 fps | 99.8% |
| Norma 202 | <<locked>> | 92% | 52,721 psi | 90% | 2753 fps | 100% |
| Norma 203B | <<locked>> | 94% | 50,401 psi | 86% | 2769 fps | 99.2% |
| Norma URPᴾ | <<locked>> | 100% | 43,932 psi | 75% | 2703 fps | 96.9% |
| Ramshot Big Game | <<locked>> | 94% | 50,778 psi | 86% | 2795 fps | 99.1% |
| Ramshot TAC | <<locked>> | 88% | 50,357 psi | 86% | 2717 fps | 97% |
| Ramshot Wild Boar | <<locked>> | 90% | 52,678 psi | 90% | 2789 fps | 99.3% |
| Ramshot X-Terminator | <<locked>> | 86% | 51,039 psi | 87% | 2707 fps | 99% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 34,534 psi | 59% | 1703 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 86% | 52,924 psi | 90% | 2746 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 96% | 52,968 psi | 90% | 2766 fps | 96.6% |
| ReloadSwiss RS 52 | <<locked>> | 92% | 50,633 psi | 86% | 2838 fps | 98.9% |
| ReloadSwiss RS 60 | <<locked>> | 98% | 50,879 psi | 87% | 2877 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 43,482 psi | 74% | 2720 fps | 96.5% |
| Rottweil R 901 | <<locked>> | 90% | 53,055 psi | 90% | 2730 fps | 100% |
| Rottweil R 902 | <<locked>> | 94% | 52,692 psi | 90% | 2743 fps | 99.9% |
| Rottweil R 903 | <<locked>> | 98% | 49,864 psi | 85% | 2759 fps | 99.5% |
| Shooters World Long Rifleᴾ | <<locked>> | 100% | 49,008 psi | 83% | 2703 fps | 96.6% |
| Shooters World Match Rifle | <<locked>> | 92% | 52,330 psi | 89% | 2772 fps | 100% |
| Shooters World Precision | <<locked>> | 94% | 50,009 psi | 85% | 2723 fps | 99.7% |
| Shooters World Tactical Rifle | <<locked>> | 84% | 52,794 psi | 90% | 2713 fps | 99.7% |
| SNPE Vectan SP 10 | <<locked>> | 82% | 51,909 psi | 88% | 2736 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 98% | 52,330 psi | 89% | 2825 fps | 99.3% |
| SNPE Vectan SP 3 | <<locked>> | 84% | 52,359 psi | 89% | 2694 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 90% | 51,372 psi | 87% | 2740 fps | 97.8% |
| SNPE Vectan SP 9 | <<locked>> | 92% | 52,011 psi | 89% | 2766 fps | 99.3% |
| SNPE Vectan Tubal 3000 | <<locked>> | 90% | 51,387 psi | 87% | 2651 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 96% | 50,836 psi | 87% | 2644 fps | 100% |
| Somchem S321 | <<locked>> | 86% | 50,589 psi | 86% | 2740 fps | 99.8% |
| Somchem S335 | <<locked>> | 90% | 50,459 psi | 86% | 2651 fps | 100% |
| Somchem S341 | <<locked>> | 90% | 51,053 psi | 87% | 2736 fps | 99.1% |
| Somchem S355 | <<locked>> | 98% | 50,807 psi | 86% | 2759 fps | 99.5% |
| Somchem S365ᴾ | <<locked>> | 100% | 38,943 psi | 66% | 2648 fps | 98.8% |
| Vihtavuori N130 | <<locked>> | 86% | 51,459 psi | 88% | 2628 fps | 100% |
| Vihtavuori N133 | <<locked>> | 90% | 51,358 psi | 87% | 2641 fps | 100% |
| Vihtavuori N135 | <<locked>> | 94% | 51,692 psi | 88% | 2713 fps | 100% |
| Vihtavuori N140 | <<locked>> | 92% | 50,024 psi | 85% | 2687 fps | 100% |
| Vihtavuori N150ᴾ | <<locked>> | 100% | 52,620 psi | 90% | 2749 fps | 100% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 46,412 psi | 79% | 2703 fps | 97.3% |
| Vihtavuori N530 | <<locked>> | 88% | 50,198 psi | 85% | 2707 fps | 99.7% |
| Vihtavuori N540 | <<locked>> | 94% | 51,271 psi | 87% | 2726 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 45,208 psi | 77% | 2707 fps | 96.9% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 47,718 psi | 81% | 2694 fps | 99.2% |
| Winchester 748 | <<locked>> | 90% | 52,736 psi | 90% | 2802 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 92% | 51,692 psi | 88% | 2779 fps | 99.6% |
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% | 39,639 psi | 67% | 2484 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 43,120 psi | 73% | 2582 fps | 99.9% |
| Accurate 2495 | <<locked>> | 80% | 31,705 psi | 54% | 2385 fps | 99.9% |
| Accurate 2520 | <<locked>> | 80% | 38,406 psi | 65% | 2533 fps | 99.3% |
| Accurate 4064 | <<locked>> | 80% | 30,066 psi | 51% | 2365 fps | 98.4% |
| Accurate 4350 | <<locked>> | 96% | 37,507 psi | 64% | 2589 fps | 95.3% |
| Accurate LT-30 | <<locked>> | 80% | 48,443 psi | 82% | 2569 fps | 100% |
| Accurate LT-32 | <<locked>> | 80% | 48,820 psi | 83% | 2592 fps | 100% |
| Accurate LT-32 | <<locked>> | 80% | 48,820 psi | 83% | 2592 fps | 100% |
| ADI AR 2206H | <<locked>> | 80% | 36,506 psi | 62% | 2484 fps | 96.3% |
| ADI AR 2208 | <<locked>> | 84% | 35,389 psi | 60% | 2441 fps | 95% |
| ADI AR 2219 | <<locked>> | 80% | 48,283 psi | 82% | 2680 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 80% | 38,551 psi | 66% | 2503 fps | 98.1% |
| Alliant AR-Comp | <<locked>> | 80% | 37,260 psi | 63% | 2510 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 44,527 psi | 76% | 2694 fps | 98.8% |
| Alliant Power Pro 2000-MR | 50.8 gr | 84% | 37,710 psi | 64% | 2602 fps | 95.2% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 29,950 psi | 51% | 2356 fps | 95% |
| Alliant Reloder-10x | <<locked>> | 80% | 45,411 psi | 77% | 2589 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 82% | 34,766 psi | 59% | 2467 fps | 95.1% |
| Alliant Reloder-16 | <<locked>> | 96% | 38,957 psi | 66% | 2605 fps | 95.5% |
| Alliant Reloder-17 | <<locked>> | 88% | 33,866 psi | 58% | 2520 fps | 95.5% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 47,456 psi | 81% | 2569 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 38,000 psi | 65% | 2536 fps | 95.4% |
| Bofors RP3 | <<locked>> | 82% | 31,169 psi | 53% | 2402 fps | 95.7% |
| Hodgdon Benchmark | <<locked>> | 80% | 40,669 psi | 69% | 2503 fps | 98.9% |
| Hodgdon BL-C2 | <<locked>> | 80% | 36,506 psi | 62% | 2513 fps | 98.2% |
| Hodgdon CFE223 | <<locked>> | 80% | 40,176 psi | 68% | 2638 fps | 96.8% |
| Hodgdon H322 | <<locked>> | 80% | 44,164 psi | 75% | 2615 fps | 100% |
| Hodgdon H335 | <<locked>> | 80% | 44,643 psi | 76% | 2631 fps | 100% |
| Hodgdon H380 | <<locked>> | 88% | 39,885 psi | 68% | 2569 fps | 95.2% |
| Hodgdon H4895 | <<locked>> | 80% | 36,724 psi | 63% | 2497 fps | 97% |
| Hodgdon Hybrid 100V | <<locked>> | 94% | 33,069 psi | 56% | 2444 fps | 95.3% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 32,735 psi | 56% | 2454 fps | 96.1% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,367 psi | 43% | 1486 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 35,592 psi | 61% | 2454 fps | 96.5% |
| IMR 3031 | <<locked>> | 80% | 35,621 psi | 61% | 2507 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 34,809 psi | 59% | 2425 fps | 95.1% |
| IMR 4198 | <<locked>> | 80% | 46,180 psi | 79% | 2552 fps | 100% |
| IMR 4831 | <<locked>> | 98% | 39,030 psi | 66% | 2598 fps | 95.8% |
| IMR 4895 | <<locked>> | 80% | 33,156 psi | 56% | 2441 fps | 95.2% |
| IMR 8208 XBR | <<locked>> | 80% | 38,551 psi | 66% | 2503 fps | 98.1% |
| Lovex D073.5 | <<locked>> | 80% | 42,830 psi | 73% | 2582 fps | 99.4% |
| Lovex D073.6 | <<locked>> | 80% | 34,577 psi | 59% | 2464 fps | 98.6% |
| Lovex S060 | <<locked>> | 80% | 37,536 psi | 64% | 2438 fps | 96.6% |
| Lovex S062 | <<locked>> | 80% | 32,140 psi | 55% | 2379 fps | 96.3% |
| Lovex S065 | <<locked>> | 96% | 43,337 psi | 74% | 2605 fps | 95.2% |
| Norma 201 | <<locked>> | 80% | 35,592 psi | 61% | 2441 fps | 97.4% |
| Norma 202 | <<locked>> | 80% | 35,839 psi | 61% | 2464 fps | 99.3% |
| Norma 203B | <<locked>> | 82% | 34,113 psi | 58% | 2457 fps | 95.5% |
| Norma URP | <<locked>> | 96% | 38,493 psi | 66% | 2595 fps | 95.3% |
| Ramshot Big Game | <<locked>> | 84% | 35,998 psi | 61% | 2516 fps | 95.8% |
| Ramshot TAC | <<locked>> | 84% | 43,961 psi | 75% | 2605 fps | 95.6% |
| Ramshot Wild Boar | <<locked>> | 80% | 37,420 psi | 64% | 2516 fps | 96.5% |
| Ramshot X-Terminator | <<locked>> | 80% | 41,959 psi | 71% | 2549 fps | 97.5% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 25,512 psi | 43% | 1522 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 43,395 psi | 74% | 2592 fps | 99.7% |
| ReloadSwiss RS 50 | <<locked>> | 92% | 46,282 psi | 79% | 2654 fps | 95.1% |
| ReloadSwiss RS 52 | 48.1 gr | 82% | 35,868 psi | 61% | 2556 fps | 95.4% |
| ReloadSwiss RS 60 | 47.6 gr | 80% | 27,702 psi | 47% | 2352 fps | 95.1% |
| ReloadSwiss RS 62 | <<locked>> | 98% | 40,509 psi | 69% | 2664 fps | 95.7% |
| Rottweil R 901 | <<locked>> | 80% | 39,305 psi | 67% | 2500 fps | 99.6% |
| Rottweil R 902 | <<locked>> | 80% | 33,910 psi | 58% | 2398 fps | 96.9% |
| Rottweil R 903 | <<locked>> | 84% | 31,285 psi | 53% | 2395 fps | 95.3% |
| Shooters World Long Rifle | <<locked>> | 96% | 43,337 psi | 74% | 2605 fps | 95.2% |
| Shooters World Match Rifle | <<locked>> | 80% | 34,577 psi | 59% | 2464 fps | 98.6% |
| Shooters World Precision | <<locked>> | 80% | 32,140 psi | 55% | 2379 fps | 96.3% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 46,006 psi | 78% | 2608 fps | 99.1% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 48,515 psi | 83% | 2687 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 86% | 35,070 psi | 60% | 2500 fps | 95.6% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 46,282 psi | 79% | 2605 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 84% | 41,771 psi | 71% | 2575 fps | 95.6% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 35,143 psi | 60% | 2454 fps | 95.8% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 37,652 psi | 64% | 2421 fps | 99.5% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 30,748 psi | 52% | 2290 fps | 99% |
| Somchem S321 | <<locked>> | 80% | 41,307 psi | 70% | 2579 fps | 98.9% |
| Somchem S335 | <<locked>> | 80% | 36,869 psi | 63% | 2421 fps | 99.7% |
| Somchem S341 | <<locked>> | 80% | 36,129 psi | 62% | 2467 fps | 96% |
| Somchem S355 | <<locked>> | 84% | 32,605 psi | 56% | 2411 fps | 95.5% |
| Somchem S365 | <<locked>> | 92% | 30,110 psi | 51% | 2431 fps | 95.7% |
| Vihtavuori N130 | <<locked>> | 80% | 42,859 psi | 73% | 2500 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 37,826 psi | 64% | 2428 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 32,851 psi | 56% | 2398 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 33,750 psi | 57% | 2398 fps | 99.1% |
| Vihtavuori N150 | <<locked>> | 82% | 28,964 psi | 49% | 2303 fps | 95.7% |
| Vihtavuori N160 | <<locked>> | 94% | 38,116 psi | 65% | 2546 fps | 95% |
| Vihtavuori N530 | <<locked>> | 80% | 38,392 psi | 65% | 2497 fps | 98.1% |
| Vihtavuori N540 | <<locked>> | 80% | 32,430 psi | 55% | 2385 fps | 98.5% |
| Vihtavuori N550 | <<locked>> | 96% | 39,624 psi | 67% | 2598 fps | 95.4% |
| Winchester 6.5 StaBALL | <<locked>> | 90% | 34,156 psi | 58% | 2428 fps | 95.8% |
| Winchester 748 | <<locked>> | 80% | 37,173 psi | 63% | 2533 fps | 98.6% |
| Winchester StaBALL Match | <<locked>> | 80% | 34,214 psi | 58% | 2454 fps | 96.2% |
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 91 powders for 8 x 65 RS loaded with the .323 | 180gr | Lapua Naturalis. ReloadSwiss RS 60 delivers the highest muzzle velocity at 2,877 fps; across all powders the maximum-charge window runs from 1,663 fps to 2,877 fps. Accurate 4350 gives the best case fill at 100 %, and 91 of the 91 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (405 MPa), the top charges use 58–90 %, leaving at least 10 % headroom. The 180.0 gr projectile in 0.323" calls for a 1:14.0 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 8 x 65 RS with the .323 | 180gr | Lapua Naturalis 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.