Load Specifications
Load data in caliber 8 x 65 RS with .323 | 180gr | Barnes X S bullet and 88 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 60, Alliant Power Pro 2000-MR and ReloadSwiss RS 52.
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>> | 86% | 52,968 psi | 90% | 2657 fps | 100% |
| Accurate 2460 | <<locked>> | 82% | 51,488 psi | 88% | 2680 fps | 100% |
| Accurate 2495 | <<locked>> | 90% | 51,547 psi | 88% | 2687 fps | 100% |
| Accurate 2520 | <<locked>> | 86% | 52,547 psi | 89% | 2736 fps | 100% |
| Accurate 4064 | <<locked>> | 92% | 51,126 psi | 87% | 2723 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 48,863 psi | 83% | 2766 fps | 97.9% |
| ADI AR 2206H | <<locked>> | 88% | 51,605 psi | 88% | 2736 fps | 99.2% |
| ADI AR 2208 | <<locked>> | 94% | 52,054 psi | 89% | 2726 fps | 98.8% |
| ADI Benchmark 8208 | <<locked>> | 86% | 50,908 psi | 87% | 2697 fps | 99.7% |
| Alliant AR-Comp | <<locked>> | 86% | 50,633 psi | 86% | 2687 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 82% | 52,228 psi | 89% | 2795 fps | 99.6% |
| Alliant Power Pro 2000-MR | <<locked>> | 90% | 50,154 psi | 85% | 2828 fps | 98.5% |
| Alliant Reloder- TS 15.5 | <<locked>> | 94% | 51,706 psi | 88% | 2756 fps | 99.7% |
| Alliant Reloder-10x | <<locked>> | 82% | 52,837 psi | 90% | 2664 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 92% | 52,663 psi | 90% | 2776 fps | 99% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 47,906 psi | 82% | 2759 fps | 97.9% |
| Alliant Reloder-17 | <<locked>> | 98% | 51,837 psi | 88% | 2861 fps | 99.6% |
| Baschieri & Pellagri 107 | <<locked>> | 88% | 50,792 psi | 86% | 2743 fps | 98.3% |
| Bofors RP3 | <<locked>> | 94% | 52,373 psi | 89% | 2772 fps | 99.8% |
| Hodgdon Benchmark | <<locked>> | 86% | 52,837 psi | 90% | 2684 fps | 99.9% |
| Hodgdon BL-C2 | <<locked>> | 88% | 52,736 psi | 90% | 2772 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 84% | 50,546 psi | 86% | 2802 fps | 98.8% |
| Hodgdon H322 | <<locked>> | 82% | 51,358 psi | 87% | 2697 fps | 100% |
| Hodgdon H335 | <<locked>> | 82% | 52,185 psi | 89% | 2723 fps | 100% |
| Hodgdon H380 | <<locked>> | 92% | 50,299 psi | 86% | 2726 fps | 97.6% |
| Hodgdon H414ᴾ | <<locked>> | 100% | 51,909 psi | 88% | 2805 fps | 95.7% |
| Hodgdon H4895 | <<locked>> | 88% | 52,083 psi | 89% | 2753 fps | 99.5% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 44,222 psi | 75% | 2651 fps | 98.5% |
| Hodgdon LEVERevolution | <<locked>> | 90% | 50,285 psi | 86% | 2776 fps | 99.6% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,360 psi | 60% | 1667 fps | 100% |
| Hodgdon VARGET | <<locked>> | 90% | 53,098 psi | 90% | 2749 fps | 99.6% |
| IMR 3031 | <<locked>> | 88% | 51,169 psi | 87% | 2740 fps | 100% |
| IMR 4064 | <<locked>> | 92% | 51,793 psi | 88% | 2713 fps | 98.9% |
| IMR 4198 | <<locked>> | 82% | 52,475 psi | 89% | 2621 fps | 100% |
| IMR 4831ᴾ | <<locked>> | 100% | 46,412 psi | 79% | 2707 fps | 97.5% |
| IMR 4895 | <<locked>> | 90% | 50,647 psi | 86% | 2756 fps | 99.2% |
| IMR 8208 XBR | <<locked>> | 86% | 50,908 psi | 87% | 2697 fps | 99.7% |
| Lovex D073.5 | <<locked>> | 82% | 51,401 psi | 88% | 2687 fps | 100% |
| Lovex D073.6 | <<locked>> | 88% | 50,923 psi | 87% | 2723 fps | 100% |
| Lovex S060 | <<locked>> | 88% | 51,605 psi | 88% | 2667 fps | 99.2% |
| Lovex S062 | <<locked>> | 92% | 51,663 psi | 88% | 2720 fps | 99.8% |
| Lovex S065 | <<locked>> | 98% | 50,676 psi | 86% | 2703 fps | 96.8% |
| Lovex S070ᴾ | <<locked>> | 100% | 51,271 psi | 87% | 2733 fps | 95.7% |
| Norma 201 | <<locked>> | 88% | 51,024 psi | 87% | 2694 fps | 99.7% |
| Norma 202 | <<locked>> | 88% | 50,923 psi | 87% | 2700 fps | 100% |
| Norma 203B | <<locked>> | 92% | 51,895 psi | 88% | 2766 fps | 99.3% |
| Norma URPᴾ | <<locked>> | 100% | 48,370 psi | 82% | 2753 fps | 97.7% |
| Ramshot Big Game | <<locked>> | 92% | 51,634 psi | 88% | 2782 fps | 99.1% |
| Ramshot TAC | <<locked>> | 86% | 51,126 psi | 87% | 2700 fps | 97.1% |
| Ramshot Wild Boar | <<locked>> | 86% | 50,198 psi | 85% | 2723 fps | 99% |
| Ramshot X-Terminator | <<locked>> | 84% | 51,779 psi | 88% | 2694 fps | 99.1% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,621 psi | 61% | 1706 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 82% | 50,459 psi | 86% | 2680 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 92% | 50,865 psi | 87% | 2703 fps | 96.1% |
| ReloadSwiss RS 52 | <<locked>> | 90% | 51,996 psi | 89% | 2835 fps | 99% |
| ReloadSwiss RS 60 | <<locked>> | 96% | 51,663 psi | 88% | 2867 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 48,211 psi | 82% | 2779 fps | 97.5% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 49,124 psi | 84% | 2792 fps | 96.9% |
| Rottweil R 901 | <<locked>> | 86% | 52,605 psi | 90% | 2687 fps | 100% |
| Rottweil R 902 | <<locked>> | 90% | 51,445 psi | 88% | 2690 fps | 99.7% |
| Rottweil R 903 | <<locked>> | 96% | 51,938 psi | 88% | 2759 fps | 99.6% |
| Shooters World Long Rifle | <<locked>> | 98% | 50,676 psi | 86% | 2703 fps | 96.8% |
| Shooters World Match Rifle | <<locked>> | 88% | 50,923 psi | 87% | 2723 fps | 100% |
| Shooters World Precision | <<locked>> | 92% | 51,663 psi | 88% | 2720 fps | 99.8% |
| Shooters World SW4350ᴾ | <<locked>> | 100% | 51,271 psi | 87% | 2733 fps | 95.7% |
| SNPE Vectan SP 11 | <<locked>> | 96% | 53,127 psi | 90% | 2812 fps | 99.3% |
| SNPE Vectan SP 7 | <<locked>> | 88% | 52,663 psi | 90% | 2730 fps | 97.9% |
| SNPE Vectan SP 9 | <<locked>> | 90% | 52,982 psi | 90% | 2756 fps | 99.3% |
| SNPE Vectan Tubal 3000 | <<locked>> | 88% | 52,562 psi | 89% | 2641 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 94% | 51,851 psi | 88% | 2635 fps | 100% |
| Somchem S321 | <<locked>> | 84% | 51,750 psi | 88% | 2730 fps | 99.9% |
| Somchem S335 | <<locked>> | 88% | 51,880 psi | 88% | 2641 fps | 100% |
| Somchem S341 | <<locked>> | 88% | 51,924 psi | 88% | 2726 fps | 99.1% |
| Somchem S355 | <<locked>> | 96% | 52,460 psi | 89% | 2756 fps | 99.5% |
| Somchem S365ᴾ | <<locked>> | 100% | 43,497 psi | 74% | 2710 fps | 99.4% |
| Vihtavuori N130 | <<locked>> | 84% | 52,301 psi | 89% | 2612 fps | 100% |
| Vihtavuori N133 | <<locked>> | 88% | 52,330 psi | 89% | 2628 fps | 100% |
| Vihtavuori N135 | <<locked>> | 92% | 53,142 psi | 90% | 2707 fps | 100% |
| Vihtavuori N140 | <<locked>> | 90% | 51,198 psi | 87% | 2677 fps | 100% |
| Vihtavuori N150 | <<locked>> | 96% | 50,502 psi | 86% | 2694 fps | 99.9% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 50,778 psi | 86% | 2749 fps | 98% |
| Vihtavuori N530 | <<locked>> | 86% | 51,227 psi | 87% | 2694 fps | 99.8% |
| Vihtavuori N540 | <<locked>> | 92% | 52,634 psi | 90% | 2720 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 49,879 psi | 85% | 2756 fps | 97.8% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 51,750 psi | 88% | 2733 fps | 99.5% |
| Winchester 748 | <<locked>> | 86% | 50,125 psi | 85% | 2736 fps | 99.9% |
| Winchester 760ᴾ | <<locked>> | 100% | 51,909 psi | 88% | 2805 fps | 95.7% |
| Winchester StaBALL Match | <<locked>> | 90% | 52,591 psi | 90% | 2766 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% | 44,599 psi | 76% | 2533 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 48,298 psi | 82% | 2631 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 38,305 psi | 65% | 2470 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 43,424 psi | 74% | 2589 fps | 99.8% |
| Accurate 4064 | <<locked>> | 80% | 36,143 psi | 62% | 2457 fps | 99.5% |
| Accurate 4350 | <<locked>> | 92% | 37,797 psi | 64% | 2559 fps | 95.2% |
| ADI AR 2206H | <<locked>> | 80% | 40,843 psi | 70% | 2543 fps | 97.4% |
| ADI AR 2208 | <<locked>> | 82% | 36,825 psi | 63% | 2441 fps | 95.4% |
| ADI Benchmark 8208 | <<locked>> | 80% | 42,670 psi | 73% | 2552 fps | 98.8% |
| Alliant AR-Comp | <<locked>> | 80% | 41,901 psi | 71% | 2556 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 49,153 psi | 84% | 2743 fps | 99.3% |
| Alliant Power Pro 2000-MR | 49.4 gr | 82% | 38,986 psi | 66% | 2602 fps | 95.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 34,214 psi | 58% | 2421 fps | 96.5% |
| Alliant Reloder-10x | <<locked>> | 80% | 49,777 psi | 85% | 2621 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 36,854 psi | 63% | 2477 fps | 95.7% |
| Alliant Reloder-16 | <<locked>> | 92% | 38,189 psi | 65% | 2559 fps | 95% |
| Alliant Reloder-17 | <<locked>> | 84% | 33,721 psi | 57% | 2480 fps | 95.3% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 39,349 psi | 67% | 2533 fps | 95.8% |
| Bofors RP3 | <<locked>> | 80% | 34,040 psi | 58% | 2428 fps | 96.6% |
| Hodgdon Benchmark | <<locked>> | 80% | 44,585 psi | 76% | 2546 fps | 99.4% |
| Hodgdon BL-C2 | <<locked>> | 80% | 41,002 psi | 70% | 2572 fps | 99% |
| Hodgdon CFE223 | <<locked>> | 80% | 44,483 psi | 76% | 2694 fps | 97.7% |
| Hodgdon H322 | <<locked>> | 80% | 48,080 psi | 82% | 2648 fps | 100% |
| Hodgdon H335 | <<locked>> | 80% | 48,965 psi | 83% | 2674 fps | 100% |
| Hodgdon H380 | <<locked>> | 86% | 41,800 psi | 71% | 2572 fps | 95.7% |
| Hodgdon H414 | <<locked>> | 98% | 48,660 psi | 83% | 2753 fps | 95% |
| Hodgdon H4895 | <<locked>> | 80% | 41,133 psi | 70% | 2556 fps | 98% |
| Hodgdon Hybrid 100V | <<locked>> | 90% | 33,286 psi | 57% | 2415 fps | 95.3% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 36,854 psi | 63% | 2520 fps | 97.4% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,513 psi | 45% | 1490 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 39,233 psi | 67% | 2503 fps | 97.4% |
| IMR 3031 | <<locked>> | 80% | 39,958 psi | 68% | 2556 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 36,492 psi | 62% | 2428 fps | 95.6% |
| IMR 4198 | <<locked>> | 80% | 49,661 psi | 85% | 2579 fps | 100% |
| IMR 4831 | <<locked>> | 94% | 38,653 psi | 66% | 2556 fps | 95.5% |
| IMR 4895 | <<locked>> | 80% | 37,681 psi | 64% | 2510 fps | 96.7% |
| IMR 8208 XBR | <<locked>> | 80% | 42,670 psi | 73% | 2552 fps | 98.8% |
| Lovex D073.5 | <<locked>> | 80% | 48,240 psi | 82% | 2638 fps | 99.8% |
| Lovex D073.6 | <<locked>> | 80% | 39,566 psi | 67% | 2530 fps | 99.4% |
| Lovex S060 | <<locked>> | 80% | 41,104 psi | 70% | 2480 fps | 97.4% |
| Lovex S062 | <<locked>> | 80% | 36,564 psi | 62% | 2441 fps | 97.6% |
| Lovex S065 | <<locked>> | 94% | 45,194 psi | 77% | 2608 fps | 95.6% |
| Lovex S070 | <<locked>> | 98% | 48,457 psi | 82% | 2684 fps | 95.1% |
| Norma 201 | <<locked>> | 80% | 40,495 psi | 69% | 2507 fps | 98.5% |
| Norma 202 | <<locked>> | 80% | 40,089 psi | 68% | 2516 fps | 99.8% |
| Norma 203B | <<locked>> | 80% | 36,260 psi | 62% | 2470 fps | 96.1% |
| Norma URP | <<locked>> | 92% | 38,101 psi | 65% | 2552 fps | 95% |
| Ramshot Big Game | <<locked>> | 80% | 35,404 psi | 60% | 2470 fps | 95.5% |
| Ramshot TAC | <<locked>> | 80% | 42,453 psi | 72% | 2546 fps | 95% |
| Ramshot Wild Boar | <<locked>> | 80% | 41,597 psi | 71% | 2569 fps | 97.5% |
| Ramshot X-Terminator | <<locked>> | 80% | 45,832 psi | 78% | 2592 fps | 98.2% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,614 psi | 45% | 1522 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 47,601 psi | 81% | 2635 fps | 99.9% |
| ReloadSwiss RS 50 | <<locked>> | 90% | 47,776 psi | 81% | 2654 fps | 95.4% |
| ReloadSwiss RS 52 | 46.7 gr | 80% | 37,623 psi | 64% | 2562 fps | 95.9% |
| ReloadSwiss RS 60 | 47.5 gr | 80% | 31,618 psi | 54% | 2434 fps | 97.1% |
| ReloadSwiss RS 62 | <<locked>> | 94% | 39,842 psi | 68% | 2618 fps | 95.3% |
| ReloadSwiss RS 70 | <<locked>> | 96% | 43,352 psi | 74% | 2680 fps | 95.2% |
| Rottweil R 901 | <<locked>> | 80% | 44,614 psi | 76% | 2556 fps | 99.9% |
| Rottweil R 902 | <<locked>> | 80% | 38,566 psi | 66% | 2461 fps | 98% |
| Rottweil R 903 | <<locked>> | 80% | 32,198 psi | 55% | 2375 fps | 95.5% |
| Shooters World Long Rifle | <<locked>> | 94% | 45,194 psi | 77% | 2608 fps | 95.6% |
| Shooters World Match Rifle | <<locked>> | 80% | 39,566 psi | 67% | 2530 fps | 99.4% |
| Shooters World Precision | <<locked>> | 80% | 36,564 psi | 62% | 2441 fps | 97.6% |
| Shooters World SW4350 | <<locked>> | 98% | 48,457 psi | 82% | 2684 fps | 95.1% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 34,737 psi | 59% | 2461 fps | 95.3% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 40,857 psi | 70% | 2523 fps | 95.2% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 39,073 psi | 67% | 2507 fps | 96.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 41,626 psi | 71% | 2464 fps | 99.8% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 34,505 psi | 59% | 2339 fps | 99.6% |
| Somchem S321 | <<locked>> | 80% | 45,658 psi | 78% | 2628 fps | 99.4% |
| Somchem S335 | <<locked>> | 80% | 41,408 psi | 70% | 2470 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 40,161 psi | 68% | 2520 fps | 97.1% |
| Somchem S355 | <<locked>> | 80% | 33,083 psi | 56% | 2382 fps | 95.6% |
| Somchem S365 | <<locked>> | 88% | 30,574 psi | 52% | 2405 fps | 95.8% |
| Vihtavuori N130 | <<locked>> | 80% | 46,818 psi | 80% | 2530 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 41,539 psi | 71% | 2461 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 37,405 psi | 64% | 2454 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 37,985 psi | 65% | 2454 fps | 99.7% |
| Vihtavuori N150 | <<locked>> | 80% | 31,299 psi | 53% | 2323 fps | 96.5% |
| Vihtavuori N160 | <<locked>> | 92% | 39,929 psi | 68% | 2556 fps | 95.5% |
| Vihtavuori N530 | <<locked>> | 80% | 42,670 psi | 73% | 2549 fps | 98.8% |
| Vihtavuori N540 | <<locked>> | 80% | 36,782 psi | 63% | 2448 fps | 99.3% |
| Vihtavuori N550 | <<locked>> | 92% | 39,117 psi | 67% | 2559 fps | 95.1% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 33,707 psi | 57% | 2385 fps | 95.4% |
| Winchester 748 | <<locked>> | 80% | 41,568 psi | 71% | 2589 fps | 99.3% |
| Winchester 760 | <<locked>> | 98% | 48,979 psi | 83% | 2756 fps | 95% |
| Winchester StaBALL Match | <<locked>> | 80% | 38,305 psi | 65% | 2510 fps | 97.3% |
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 8 x 65 RS loaded with the .323 | 180gr | Barnes X S. ReloadSwiss RS 60 delivers the highest muzzle velocity at 2,867 fps; across all powders the maximum-charge window runs from 1,667 fps to 2,867 fps. Accurate 3100 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 (405 MPa), the top charges use 53–90 %, 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 3100, Accurate 4350, Alliant Reloder-16 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. ReloadSwiss RS 60, Alliant Power Pro 2000-MR, ReloadSwiss RS 52 rank at the top here: for 8 x 65 RS with the .323 | 180gr | Barnes X S they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate 2700, Accurate 3100, Alliant Reloder-26 burn incompletely and react more sensitively to barrel length and temperature. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.