Load Specifications
Load data in caliber 8 x 57 IRS with .3235 | 250gr | Prvi Partizan FMJ BT bullet and 58 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 60, ReloadSwiss RS 70 and Alliant Reloder-17.
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: 23.62"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2495 | <<locked>> | 84% | 42,844 psi | 90% | 2080 fps | 100% |
| Accurate 4064 | <<locked>> | 86% | 42,960 psi | 90% | 2116 fps | 100% |
| Accurate 4350 | <<locked>> | 94% | 41,220 psi | 86% | 2162 fps | 98.4% |
| ADI AR 2208 | <<locked>> | 86% | 42,380 psi | 89% | 2096 fps | 98.8% |
| Alliant Power Pro 2000-MR | <<locked>> | 84% | 42,482 psi | 89% | 2208 fps | 98.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 86% | 41,669 psi | 87% | 2113 fps | 99.7% |
| Alliant Reloder-15 | <<locked>> | 84% | 42,105 psi | 88% | 2123 fps | 99% |
| Alliant Reloder-16 | <<locked>> | 94% | 41,249 psi | 86% | 2169 fps | 98.5% |
| Alliant Reloder-17 | <<locked>> | 90% | 41,234 psi | 86% | 2195 fps | 99.6% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 35,085 psi | 73% | 2090 fps | 98.3% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 38,551 psi | 81% | 2208 fps | 97.2% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 42,902 psi | 90% | 2139 fps | 98.7% |
| Bofors RP3 | <<locked>> | 86% | 41,263 psi | 86% | 2119 fps | 99.7% |
| Hodgdon H380 | <<locked>> | 86% | 42,569 psi | 89% | 2126 fps | 98.1% |
| Hodgdon Hybrid 100V | <<locked>> | 98% | 42,946 psi | 90% | 2162 fps | 99.6% |
| Hodgdon LEVERevolution | <<locked>> | 84% | 42,786 psi | 89% | 2165 fps | 99.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,085 psi | 73% | 1329 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 42,786 psi | 89% | 2106 fps | 99.6% |
| IMR 4064 | <<locked>> | 84% | 41,930 psi | 88% | 2083 fps | 98.9% |
| IMR 4831 | <<locked>> | 96% | 42,148 psi | 88% | 2162 fps | 98.6% |
| IMR 4895 | <<locked>> | 84% | 43,105 psi | 90% | 2149 fps | 99.5% |
| Lovex D073.6 | <<locked>> | 82% | 42,888 psi | 90% | 2116 fps | 100% |
| Lovex S062 | <<locked>> | 84% | 41,713 psi | 87% | 2083 fps | 99.8% |
| Lovex S065 | <<locked>> | 90% | 41,002 psi | 86% | 2080 fps | 96.9% |
| Lovex S070 | <<locked>> | 92% | 41,234 psi | 86% | 2103 fps | 95.7% |
| Norma 201 | <<locked>> | 82% | 43,018 psi | 90% | 2090 fps | 99.9% |
| Norma 203B | <<locked>> | 84% | 41,408 psi | 87% | 2113 fps | 99.2% |
| Norma URP | <<locked>> | 94% | 41,336 psi | 86% | 2159 fps | 98.3% |
| Ramshot Big Game | <<locked>> | 84% | 40,915 psi | 85% | 2129 fps | 99% |
| Ramshot Hunter | <<locked>> | 96% | 43,163 psi | 90% | 2195 fps | 97% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,476 psi | 74% | 1358 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 86% | 42,931 psi | 90% | 2110 fps | 96.6% |
| ReloadSwiss RS 52 | <<locked>> | 82% | 41,379 psi | 86% | 2165 fps | 98.9% |
| ReloadSwiss RS 60 | <<locked>> | 88% | 41,205 psi | 86% | 2201 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 94% | 40,785 psi | 85% | 2178 fps | 98% |
| ReloadSwiss RS 70 | <<locked>> | 94% | 41,495 psi | 87% | 2192 fps | 97.5% |
| Rottweil R 902 | <<locked>> | 82% | 41,089 psi | 86% | 2054 fps | 99.7% |
| Rottweil R 903 | <<locked>> | 88% | 41,466 psi | 87% | 2116 fps | 99.6% |
| Shooters World Long Rifle | <<locked>> | 90% | 41,002 psi | 86% | 2080 fps | 96.9% |
| Shooters World Match Rifle | <<locked>> | 82% | 42,888 psi | 90% | 2116 fps | 100% |
| Shooters World Precision | <<locked>> | 84% | 41,713 psi | 87% | 2083 fps | 99.8% |
| Shooters World SW4350 | <<locked>> | 92% | 41,234 psi | 86% | 2103 fps | 95.7% |
| SNPE Vectan SP 11 | <<locked>> | 88% | 42,670 psi | 89% | 2162 fps | 99.3% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 42,554 psi | 89% | 2113 fps | 99.3% |
| SNPE Vectan Tubal 5000 | <<locked>> | 86% | 41,989 psi | 88% | 2021 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 92% | 42,902 psi | 90% | 2077 fps | 95.9% |
| Somchem S355 | <<locked>> | 88% | 42,221 psi | 88% | 2116 fps | 99.5% |
| Somchem S365 | <<locked>> | 98% | 41,814 psi | 87% | 2205 fps | 100% |
| Vihtavuori N135 | <<locked>> | 84% | 42,975 psi | 90% | 2073 fps | 100% |
| Vihtavuori N140 | <<locked>> | 82% | 41,089 psi | 86% | 2047 fps | 100% |
| Vihtavuori N150 | <<locked>> | 90% | 43,018 psi | 90% | 2103 fps | 100% |
| Vihtavuori N160 | <<locked>> | 92% | 40,640 psi | 85% | 2116 fps | 98% |
| Vihtavuori N540 | <<locked>> | 84% | 42,018 psi | 88% | 2083 fps | 100% |
| Vihtavuori N550 | <<locked>> | 94% | 42,409 psi | 89% | 2162 fps | 98.2% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 37,507 psi | 78% | 2149 fps | 98.2% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 40,872 psi | 85% | 2103 fps | 99.5% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 31,270 psi | 65% | 2080 fps | 97.7% |
| Winchester StaBALL Match | <<locked>> | 82% | 41,742 psi | 87% | 2113 fps | 99.5% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 23.62"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2495 | <<locked>> | 80% | 37,536 psi | 78% | 2005 fps | 100% |
| Accurate 4064 | <<locked>> | 80% | 35,505 psi | 74% | 2001 fps | 100% |
| Accurate 4350 | <<locked>> | 86% | 31,343 psi | 65% | 1988 fps | 95.6% |
| ADI AR 2208 | <<locked>> | 80% | 35,172 psi | 73% | 1972 fps | 97.3% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 37,217 psi | 78% | 2113 fps | 97.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 34,519 psi | 72% | 1991 fps | 98.6% |
| Alliant Reloder-15 | <<locked>> | 80% | 37,101 psi | 78% | 2037 fps | 98% |
| Alliant Reloder-16 | <<locked>> | 86% | 32,401 psi | 68% | 1998 fps | 95.7% |
| Alliant Reloder-17 | 39.7 gr | 80% | 29,776 psi | 62% | 1965 fps | 96.6% |
| Alliant Reloder-23 | <<locked>> | 92% | 27,717 psi | 58% | 1923 fps | 95.2% |
| Alliant Reloder-26 | <<locked>> | 96% | 33,562 psi | 70% | 2103 fps | 95.2% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 40,161 psi | 84% | 2093 fps | 98.2% |
| Bofors RP3 | <<locked>> | 80% | 34,026 psi | 71% | 1998 fps | 98.6% |
| Hodgdon H380 | <<locked>> | 80% | 35,012 psi | 73% | 1998 fps | 96.1% |
| Hodgdon Hybrid 100V | <<locked>> | 84% | 27,804 psi | 58% | 1873 fps | 95.7% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 37,405 psi | 78% | 2077 fps | 99.2% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,339 psi | 55% | 1188 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 40,016 psi | 84% | 2060 fps | 99.2% |
| IMR 4064 | <<locked>> | 80% | 36,898 psi | 77% | 1998 fps | 98% |
| IMR 4831 | <<locked>> | 86% | 30,618 psi | 64% | 1952 fps | 95.3% |
| IMR 4895 | <<locked>> | 80% | 37,942 psi | 79% | 2064 fps | 98.7% |
| Lovex D073.6 | <<locked>> | 80% | 40,074 psi | 84% | 2073 fps | 100% |
| Lovex S062 | <<locked>> | 80% | 36,738 psi | 77% | 2001 fps | 99.3% |
| Lovex S065 | <<locked>> | 86% | 36,216 psi | 76% | 1998 fps | 95.5% |
| Lovex S070 | <<locked>> | 90% | 38,624 psi | 81% | 2060 fps | 95% |
| Norma 201 | <<locked>> | 80% | 40,524 psi | 85% | 2054 fps | 99.7% |
| Norma 203B | <<locked>> | 80% | 36,463 psi | 76% | 2031 fps | 98.3% |
| Norma URP | <<locked>> | 86% | 32,082 psi | 67% | 1988 fps | 95.5% |
| Ramshot Big Game | <<locked>> | 80% | 35,853 psi | 75% | 2041 fps | 98% |
| Ramshot Hunter | <<locked>> | 92% | 37,985 psi | 79% | 2106 fps | 95.5% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,498 psi | 55% | 1214 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 37,942 psi | 79% | 2028 fps | 95.1% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 38,638 psi | 81% | 2119 fps | 98.4% |
| ReloadSwiss RS 60 | 39.7 gr | 80% | 31,691 psi | 66% | 2018 fps | 99.3% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 33,417 psi | 70% | 2044 fps | 95.8% |
| ReloadSwiss RS 70 | 45.4 gr | 90% | 36,477 psi | 76% | 2100 fps | 95.8% |
| Rottweil R 902 | <<locked>> | 80% | 38,711 psi | 81% | 2018 fps | 99.5% |
| Rottweil R 903 | <<locked>> | 80% | 31,923 psi | 67% | 1949 fps | 97.8% |
| Shooters World Long Rifle | <<locked>> | 86% | 36,216 psi | 76% | 1998 fps | 95.5% |
| Shooters World Match Rifle | <<locked>> | 80% | 40,074 psi | 84% | 2073 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 36,738 psi | 77% | 2001 fps | 99.3% |
| Shooters World SW4350 | <<locked>> | 90% | 38,624 psi | 81% | 2060 fps | 95% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 33,011 psi | 69% | 1991 fps | 97.3% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 39,871 psi | 83% | 2070 fps | 98.9% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 34,867 psi | 73% | 1913 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 90% | 40,292 psi | 84% | 2037 fps | 95.2% |
| Somchem S355 | <<locked>> | 80% | 32,953 psi | 69% | 1955 fps | 97.9% |
| Somchem S365 | <<locked>> | 80% | 23,815 psi | 50% | 1821 fps | 95.2% |
| Vihtavuori N135 | <<locked>> | 80% | 37,898 psi | 79% | 2001 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 38,435 psi | 80% | 2008 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 31,212 psi | 65% | 1906 fps | 98.5% |
| Vihtavuori N160 | <<locked>> | 84% | 31,531 psi | 66% | 1946 fps | 95.2% |
| Vihtavuori N540 | <<locked>> | 80% | 37,086 psi | 77% | 2005 fps | 100% |
| Vihtavuori N550 | <<locked>> | 86% | 32,982 psi | 69% | 1995 fps | 95.6% |
| Vihtavuori N555 | <<locked>> | 92% | 29,269 psi | 61% | 1982 fps | 95.4% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 27,862 psi | 58% | 1847 fps | 95.7% |
| Winchester StaBALL HD | <<locked>> | 96% | 27,586 psi | 58% | 1975 fps | 95.4% |
| Winchester StaBALL Match | <<locked>> | 80% | 39,044 psi | 82% | 2070 fps | 99.2% |
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 58 powders for 8 x 57 IRS loaded with the .3235 | 250gr | Prvi Partizan FMJ BT. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 2,208 fps; across all powders the maximum-charge window runs from 1,329 fps to 2,208 fps. Alliant Reloder-23 gives the best case fill at 100 %, and 58 of the 58 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (330 MPa), the top charges use 65–90 %, leaving at least 10 % headroom. The 250.0 gr projectile in 0.3235" calls for a 1:12.0 twist; slower twists will usually not stabilise this weight. Alliant Reloder-23, Alliant Reloder-26, Hodgdon TrailBoss 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, ReloadSwiss RS 70, Alliant Reloder-17 rank at the top here: for 8 x 57 IRS with the .3235 | 250gr | Prvi Partizan FMJ BT 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.