Load Specifications
Load data in caliber 8 x 50 R with .323 | 125gr | Hornady SP bullet and 32 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Hodgdon H322, Alliant Reloder-10x and ADI AR 2219.
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: 29"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 1680 | <<locked>> | 86% | 45,643 psi | 89% | 2930 fps | 99.6% |
| Accurate 2015ᴾ | <<locked>> | 100% | 43,714 psi | 85% | 2989 fps | 98.9% |
| Accurate 2460 | <<locked>> | 98% | 45,556 psi | 88% | 3038 fps | 96.6% |
| Accurate 2495ᴾ | <<locked>> | 100% | 31,995 psi | 62% | 2831 fps | 96.8% |
| Accurate LT-30 | <<locked>> | 92% | 46,108 psi | 90% | 2927 fps | 98% |
| ADI AR 2207 | <<locked>> | 90% | 44,788 psi | 87% | 2995 fps | 100% |
| ADI AR 2219 | <<locked>> | 94% | 46,195 psi | 90% | 3074 fps | 98% |
| Alliant AR-Compᴾ | <<locked>> | 100% | 40,538 psi | 79% | 3018 fps | 99.9% |
| Alliant Reloder-10x | <<locked>> | 96% | 44,701 psi | 87% | 3035 fps | 99.7% |
| Alliant Reloder-7 | <<locked>> | 88% | 44,179 psi | 86% | 2949 fps | 99.7% |
| Baschieri & Pellagri 106 | <<locked>> | 92% | 44,382 psi | 86% | 2917 fps | 98% |
| Hodgdon H322 | <<locked>> | 96% | 44,585 psi | 87% | 3045 fps | 97.6% |
| Hodgdon H335 | <<locked>> | 96% | 45,411 psi | 88% | 3058 fps | 96.8% |
| Hodgdon H4198 | <<locked>> | 88% | 45,310 psi | 88% | 2930 fps | 97.3% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 31,096 psi | 60% | 1864 fps | 100% |
| IMR 3031ᴾ | <<locked>> | 100% | 38,609 psi | 75% | 2986 fps | 97.1% |
| IMR 4198 | <<locked>> | 94% | 44,570 psi | 87% | 2972 fps | 99.9% |
| IMR 4227 | <<locked>> | 84% | 45,440 psi | 88% | 2917 fps | 100% |
| Lovex S053 | <<locked>> | 84% | 44,222 psi | 86% | 2871 fps | 100% |
| Norma 200 | <<locked>> | 92% | 45,121 psi | 88% | 3022 fps | 99.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 30,821 psi | 60% | 1906 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 84% | 44,788 psi | 87% | 2949 fps | 100% |
| Rottweil R 901ᴾ | <<locked>> | 100% | 43,163 psi | 84% | 2982 fps | 96.1% |
| SNPE Vectan BA6 1/2 | <<locked>> | 88% | 45,585 psi | 89% | 2730 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 94% | 46,369 psi | 90% | 3074 fps | 97% |
| SNPE Vectan SP 3 | <<locked>> | 96% | 45,905 psi | 89% | 3035 fps | 98.6% |
| SNPE Vectan Tubal 3000ᴾ | <<locked>> | 100% | 43,250 psi | 84% | 2907 fps | 96.1% |
| Somchem S335ᴾ | <<locked>> | 100% | 41,394 psi | 80% | 2907 fps | 96.8% |
| Vihtavuori N120 | <<locked>> | 90% | 44,991 psi | 87% | 2946 fps | 100% |
| Vihtavuori N130 | <<locked>> | 98% | 46,035 psi | 89% | 2982 fps | 99.6% |
| Vihtavuori N133ᴾ | <<locked>> | 100% | 42,163 psi | 82% | 2917 fps | 98.5% |
| Vihtavuori N135ᴾ | <<locked>> | 100% | 34,490 psi | 67% | 2851 fps | 97.1% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 29"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 1680 | <<locked>> | 80% | 37,304 psi | 72% | 2766 fps | 98.5% |
| Accurate 2015 | <<locked>> | 88% | 29,965 psi | 58% | 2680 fps | 95.4% |
| Accurate 2460 | <<locked>> | 94% | 39,668 psi | 77% | 2923 fps | 95.1% |
| Accurate 2495 | <<locked>> | 96% | 28,050 psi | 54% | 2726 fps | 95.3% |
| Accurate LT-30 | <<locked>> | 84% | 36,448 psi | 71% | 2726 fps | 95.7% |
| ADI AR 2207 | <<locked>> | 80% | 32,866 psi | 64% | 2753 fps | 99.8% |
| ADI AR 2219 | 40.2 gr | 86% | 35,331 psi | 69% | 2838 fps | 95% |
| Alliant AR-Comp | <<locked>> | 84% | 24,772 psi | 48% | 2579 fps | 95.2% |
| Alliant Reloder-10x | 34.2 gr | 80% | 27,238 psi | 53% | 2618 fps | 95.5% |
| Alliant Reloder-7 | <<locked>> | 80% | 34,563 psi | 67% | 2746 fps | 98.4% |
| Baschieri & Pellagri 106 | <<locked>> | 84% | 34,360 psi | 67% | 2703 fps | 95.4% |
| Hodgdon H322 | 40.7 gr | 90% | 36,593 psi | 71% | 2871 fps | 95.5% |
| Hodgdon H335 | <<locked>> | 92% | 39,624 psi | 77% | 2940 fps | 95.3% |
| Hodgdon H4198 | <<locked>> | 82% | 37,768 psi | 73% | 2772 fps | 95.4% |
| Hodgdon TrailBoss | <<locked>> | 80% | 22,713 psi | 44% | 1663 fps | 100% |
| IMR 3031 | <<locked>> | 96% | 34,026 psi | 66% | 2871 fps | 95.5% |
| IMR 4198 | <<locked>> | 80% | 29,805 psi | 58% | 2628 fps | 97.3% |
| IMR 4227 | <<locked>> | 80% | 40,379 psi | 78% | 2822 fps | 100% |
| Lovex S053 | <<locked>> | 80% | 39,450 psi | 77% | 2782 fps | 100% |
| Norma 200 | <<locked>> | 80% | 30,922 psi | 60% | 2710 fps | 97.7% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 22,626 psi | 44% | 1706 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 80% | 39,697 psi | 77% | 2851 fps | 99.9% |
| Rottweil R 901 | <<locked>> | 98% | 40,901 psi | 79% | 2933 fps | 95.5% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 36,695 psi | 71% | 2582 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 90% | 40,654 psi | 79% | 2959 fps | 95.6% |
| SNPE Vectan SP 3 | <<locked>> | 86% | 33,750 psi | 66% | 2769 fps | 95.6% |
| SNPE Vectan Tubal 3000 | <<locked>> | 98% | 40,770 psi | 79% | 2858 fps | 95.4% |
| Somchem S335 | <<locked>> | 96% | 36,883 psi | 72% | 2808 fps | 95.5% |
| Vihtavuori N120 | <<locked>> | 80% | 33,054 psi | 64% | 2713 fps | 100% |
| Vihtavuori N130 | <<locked>> | 82% | 28,195 psi | 55% | 2579 fps | 95.5% |
| Vihtavuori N133 | <<locked>> | 90% | 31,459 psi | 61% | 2674 fps | 95.5% |
| Vihtavuori N135 | <<locked>> | 96% | 30,618 psi | 59% | 2746 fps | 95.7% |
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 60 powders for 8 x 50 R loaded with the .323 | 125gr | Hornady SP. Alliant Power Pro 1200-R delivers the highest muzzle velocity at 3,140 fps; across all powders the maximum-charge window runs from 1,864 fps to 3,140 fps. Accurate 2015 gives the best case fill at 100 %, and 60 of the 60 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (355 MPa), the top charges use 58–90 %, leaving at least 10 % headroom. The 125.0 gr projectile in 0.323" calls for a 1:16.0 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. Hodgdon H322, Alliant Reloder-10x, ADI AR 2219 rank at the top here: for 8 x 50 R with the .323 | 125gr | Hornady SP they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate 2230, Accurate 4064, ADI Benchmark 8208 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.