Load Specifications
Load data in caliber .33 Win. with .338 | 225gr | Nosler Partition bullet and 93 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 60, Hodgdon BL-C2 and IMR 3031.
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: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2015 | <<locked>> | 86% | 39,523 psi | 89% | 2162 fps | 100% |
| Accurate 2015 | <<locked>> | 86% | 39,378 psi | 89% | 2159 fps | 100% |
| Accurate 2460 | <<locked>> | 84% | 39,929 psi | 90% | 2198 fps | 98.9% |
| Accurate 2460 | <<locked>> | 84% | 39,798 psi | 90% | 2195 fps | 98.9% |
| Accurate 2495 | <<locked>> | 94% | 39,842 psi | 90% | 2234 fps | 100% |
| Accurate 2495 | <<locked>> | 94% | 39,711 psi | 90% | 2231 fps | 100% |
| Accurate 2520 | <<locked>> | 86% | 37,420 psi | 85% | 2192 fps | 98.2% |
| Accurate 2520 | <<locked>> | 86% | 37,347 psi | 84% | 2192 fps | 98.2% |
| Accurate 4064 | <<locked>> | 96% | 39,784 psi | 90% | 2257 fps | 99.4% |
| Accurate 4064 | <<locked>> | 96% | 39,668 psi | 90% | 2254 fps | 99.4% |
| ADI Benchmark 8208 | <<locked>> | 86% | 38,609 psi | 87% | 2172 fps | 96.6% |
| ADI Benchmark 8208 | <<locked>> | 86% | 38,522 psi | 87% | 2169 fps | 96.6% |
| Alliant AR-Comp | <<locked>> | 88% | 38,870 psi | 88% | 2224 fps | 100% |
| Alliant AR-Comp | <<locked>> | 88% | 38,740 psi | 88% | 2221 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 82% | 38,551 psi | 87% | 2238 fps | 96.1% |
| Alliant Power Pro 1200-R | <<locked>> | 82% | 38,464 psi | 87% | 2234 fps | 96.1% |
| Alliant Reloder- TS 15.5 | <<locked>> | 96% | 39,769 psi | 90% | 2247 fps | 96.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 96% | 39,668 psi | 90% | 2244 fps | 96.7% |
| Alliant Reloder-10x | <<locked>> | 82% | 39,987 psi | 90% | 2175 fps | 100% |
| Alliant Reloder-10x | <<locked>> | 82% | 39,885 psi | 90% | 2172 fps | 100% |
| Bofors RP3 | <<locked>> | 96% | 39,131 psi | 88% | 2251 fps | 96.7% |
| Bofors RP3 | <<locked>> | 96% | 39,001 psi | 88% | 2247 fps | 96.6% |
| Hodgdon Benchmark | <<locked>> | 84% | 38,798 psi | 88% | 2133 fps | 97.3% |
| Hodgdon Benchmark | <<locked>> | 84% | 38,667 psi | 87% | 2129 fps | 97.2% |
| Hodgdon BL-C2 | <<locked>> | 88% | 38,116 psi | 86% | 2224 fps | 97.3% |
| Hodgdon BL-C2 | <<locked>> | 88% | 38,014 psi | 86% | 2221 fps | 97.2% |
| Hodgdon H322 | <<locked>> | 82% | 38,406 psi | 87% | 2185 fps | 99.5% |
| Hodgdon H322 | <<locked>> | 82% | 38,276 psi | 87% | 2182 fps | 99.4% |
| Hodgdon H335 | <<locked>> | 82% | 38,943 psi | 88% | 2201 fps | 98.9% |
| Hodgdon H335 | <<locked>> | 82% | 38,856 psi | 88% | 2198 fps | 98.9% |
| Hodgdon H4895 | <<locked>> | 88% | 38,624 psi | 87% | 2205 fps | 95.9% |
| Hodgdon H4895 | <<locked>> | 88% | 38,769 psi | 88% | 2205 fps | 96% |
| Hodgdon LEVERevolution | <<locked>> | 92% | 39,436 psi | 89% | 2260 fps | 96.5% |
| Hodgdon LEVERevolution | <<locked>> | 92% | 39,363 psi | 89% | 2257 fps | 96.5% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 33,286 psi | 75% | 1388 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 33,373 psi | 75% | 1388 fps | 100% |
| Hodgdon VARGET | <<locked>> | 90% | 40,016 psi | 90% | 2208 fps | 96.1% |
| IMR 3031 | <<locked>> | 90% | 39,378 psi | 89% | 2257 fps | 99.9% |
| IMR 3031 | <<locked>> | 90% | 39,247 psi | 89% | 2254 fps | 99.9% |
| IMR 8208 XBR | <<locked>> | 86% | 38,609 psi | 87% | 2172 fps | 96.6% |
| IMR 8208 XBR | <<locked>> | 86% | 38,522 psi | 87% | 2169 fps | 96.6% |
| Lovex D073.5 | <<locked>> | 84% | 39,827 psi | 90% | 2198 fps | 97.9% |
| Lovex D073.5 | <<locked>> | 84% | 39,711 psi | 90% | 2195 fps | 97.9% |
| Lovex D073.6 | <<locked>> | 90% | 38,508 psi | 87% | 2224 fps | 98.4% |
| Lovex D073.6 | <<locked>> | 90% | 38,406 psi | 87% | 2221 fps | 98.4% |
| Lovex S062 | <<locked>> | 92% | 37,971 psi | 86% | 2182 fps | 96.7% |
| Lovex S062 | <<locked>> | 92% | 37,869 psi | 86% | 2178 fps | 96.6% |
| Norma 201 | <<locked>> | 88% | 37,811 psi | 85% | 2162 fps | 96.6% |
| Norma 201 | <<locked>> | 88% | 37,681 psi | 85% | 2156 fps | 96.5% |
| Norma 202 | <<locked>> | 90% | 40,030 psi | 90% | 2221 fps | 99.1% |
| Norma 202 | <<locked>> | 90% | 39,900 psi | 90% | 2218 fps | 99.1% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 33,373 psi | 75% | 1421 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 33,475 psi | 76% | 1424 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 82% | 38,290 psi | 87% | 2165 fps | 98% |
| ReloadSwiss RS 40 | <<locked>> | 82% | 38,159 psi | 86% | 2162 fps | 97.9% |
| ReloadSwiss RS 60 | <<locked>> | 96% | 38,058 psi | 86% | 2274 fps | 97.5% |
| ReloadSwiss RS 60 | <<locked>> | 96% | 37,971 psi | 86% | 2267 fps | 97.5% |
| Rottweil R 901 | <<locked>> | 86% | 39,102 psi | 88% | 2165 fps | 98.7% |
| Rottweil R 901 | <<locked>> | 86% | 39,030 psi | 88% | 2162 fps | 98.7% |
| Rottweil R 902 | <<locked>> | 90% | 38,029 psi | 86% | 2159 fps | 96.6% |
| Rottweil R 902 | <<locked>> | 90% | 37,913 psi | 86% | 2156 fps | 96.5% |
| Rottweil R 903 | <<locked>> | 98% | 38,740 psi | 88% | 2234 fps | 96.2% |
| Rottweil R 903 | <<locked>> | 98% | 38,653 psi | 87% | 2231 fps | 96.2% |
| Shooters World Match Rifle | <<locked>> | 90% | 38,508 psi | 87% | 2224 fps | 98.4% |
| Shooters World Match Rifle | <<locked>> | 90% | 38,406 psi | 87% | 2221 fps | 98.4% |
| Shooters World Precision | <<locked>> | 92% | 37,971 psi | 86% | 2182 fps | 96.7% |
| Shooters World Precision | <<locked>> | 92% | 37,869 psi | 86% | 2178 fps | 96.6% |
| SNPE Vectan Tubal 3000 | <<locked>> | 86% | 37,942 psi | 86% | 2103 fps | 98.6% |
| SNPE Vectan Tubal 3000 | <<locked>> | 86% | 37,840 psi | 86% | 2100 fps | 98.6% |
| SNPE Vectan Tubal 5000 | <<locked>> | 94% | 38,827 psi | 88% | 2136 fps | 99.5% |
| SNPE Vectan Tubal 5000 | <<locked>> | 94% | 38,740 psi | 88% | 2133 fps | 99.4% |
| Somchem S321 | <<locked>> | 84% | 38,334 psi | 87% | 2192 fps | 97% |
| Somchem S321 | <<locked>> | 84% | 38,218 psi | 86% | 2188 fps | 96.9% |
| Somchem S335 | <<locked>> | 88% | 39,233 psi | 89% | 2146 fps | 99.4% |
| Somchem S335 | <<locked>> | 88% | 39,102 psi | 88% | 2142 fps | 99.4% |
| Vihtavuori N130 | <<locked>> | 82% | 38,174 psi | 86% | 2100 fps | 100% |
| Vihtavuori N130 | <<locked>> | 82% | 38,029 psi | 86% | 2096 fps | 100% |
| Vihtavuori N133 | <<locked>> | 88% | 39,871 psi | 90% | 2142 fps | 100% |
| Vihtavuori N133 | <<locked>> | 88% | 39,740 psi | 90% | 2139 fps | 100% |
| Vihtavuori N135 | <<locked>> | 92% | 38,421 psi | 87% | 2195 fps | 100% |
| Vihtavuori N135 | <<locked>> | 92% | 38,290 psi | 87% | 2192 fps | 100% |
| Vihtavuori N140 | <<locked>> | 90% | 37,782 psi | 85% | 2162 fps | 99% |
| Vihtavuori N140 | <<locked>> | 90% | 37,666 psi | 85% | 2159 fps | 99% |
| Vihtavuori N150 | <<locked>> | 98% | 38,725 psi | 88% | 2195 fps | 97.3% |
| Vihtavuori N150 | <<locked>> | 98% | 38,653 psi | 87% | 2192 fps | 97.3% |
| Vihtavuori N530 | <<locked>> | 86% | 38,435 psi | 87% | 2165 fps | 96.7% |
| Vihtavuori N530 | <<locked>> | 86% | 38,319 psi | 87% | 2162 fps | 96.6% |
| Vihtavuori N540 | <<locked>> | 92% | 38,566 psi | 87% | 2195 fps | 98.7% |
| Vihtavuori N540 | <<locked>> | 92% | 38,479 psi | 87% | 2192 fps | 98.7% |
| Winchester 748 | <<locked>> | 88% | 39,276 psi | 89% | 2241 fps | 97.8% |
| Winchester 748 | <<locked>> | 88% | 39,175 psi | 89% | 2238 fps | 97.8% |
| Winchester StaBALL Match | <<locked>> | 90% | 38,421 psi | 87% | 2211 fps | 95.8% |
| Winchester StaBALL Match | <<locked>> | 90% | 38,334 psi | 87% | 2208 fps | 95.8% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2015 | <<locked>> | 80% | 32,721 psi | 74% | 2041 fps | 99.5% |
| Accurate 2015 | <<locked>> | 80% | 32,619 psi | 74% | 2041 fps | 99.4% |
| Accurate 2460 | <<locked>> | 80% | 35,143 psi | 79% | 2113 fps | 98% |
| Accurate 2460 | <<locked>> | 80% | 35,012 psi | 79% | 2110 fps | 97.9% |
| Accurate 2495 | <<locked>> | 80% | 25,222 psi | 57% | 1946 fps | 98.1% |
| Accurate 2495 | <<locked>> | 80% | 25,135 psi | 57% | 1946 fps | 98% |
| Accurate 2520 | <<locked>> | 80% | 30,560 psi | 69% | 2057 fps | 96.2% |
| Accurate 2520 | <<locked>> | 80% | 30,443 psi | 69% | 2054 fps | 96.1% |
| Accurate 4064 | <<locked>> | 82% | 25,585 psi | 58% | 1965 fps | 95.5% |
| Accurate 4064 | <<locked>> | 82% | 25,512 psi | 58% | 1962 fps | 95.5% |
| ADI Benchmark 8208 | <<locked>> | 82% | 34,098 psi | 77% | 2087 fps | 95.2% |
| ADI Benchmark 8208 | <<locked>> | 82% | 33,968 psi | 77% | 2083 fps | 95.1% |
| Alliant AR-Comp | <<locked>> | 80% | 29,994 psi | 68% | 2060 fps | 100% |
| Alliant AR-Comp | <<locked>> | 80% | 29,878 psi | 68% | 2057 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 36,100 psi | 82% | 2192 fps | 95.3% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 35,984 psi | 81% | 2188 fps | 95.3% |
| Alliant Reloder- TS 15.5 | <<locked>> | 92% | 35,288 psi | 80% | 2162 fps | 95.4% |
| Alliant Reloder- TS 15.5 | <<locked>> | 92% | 35,186 psi | 80% | 2162 fps | 95.3% |
| Alliant Reloder-10x | <<locked>> | 80% | 37,724 psi | 85% | 2139 fps | 100% |
| Alliant Reloder-10x | <<locked>> | 80% | 37,550 psi | 85% | 2133 fps | 100% |
| Bofors RP3 | <<locked>> | 92% | 34,287 psi | 78% | 2162 fps | 95.2% |
| Bofors RP3 | <<locked>> | 92% | 34,185 psi | 77% | 2159 fps | 95.1% |
| Hodgdon Benchmark | <<locked>> | 80% | 34,287 psi | 78% | 2047 fps | 96% |
| Hodgdon Benchmark | <<locked>> | 80% | 34,403 psi | 78% | 2051 fps | 96% |
| Hodgdon BL-C2 | 38.9 gr | 82% | 31,343 psi | 71% | 2090 fps | 95.1% |
| Hodgdon BL-C2 | 38.9 gr | 82% | 31,241 psi | 71% | 2087 fps | 95% |
| Hodgdon H322 | <<locked>> | 80% | 35,969 psi | 81% | 2139 fps | 99.1% |
| Hodgdon H322 | <<locked>> | 80% | 36,085 psi | 82% | 2142 fps | 99.1% |
| Hodgdon H335 | <<locked>> | 80% | 36,303 psi | 82% | 2156 fps | 98.4% |
| Hodgdon H335 | <<locked>> | 80% | 36,187 psi | 82% | 2152 fps | 98.4% |
| Hodgdon H4895 | <<locked>> | 86% | 36,535 psi | 83% | 2165 fps | 95.3% |
| Hodgdon H4895 | <<locked>> | 86% | 36,419 psi | 82% | 2162 fps | 95.2% |
| Hodgdon LEVERevolution | <<locked>> | 90% | 36,854 psi | 83% | 2211 fps | 95.7% |
| Hodgdon LEVERevolution | <<locked>> | 90% | 36,767 psi | 83% | 2208 fps | 95.6% |
| Hodgdon TrailBoss | <<locked>> | 80% | 24,613 psi | 56% | 1237 fps | 100% |
| Hodgdon TrailBoss | <<locked>> | 80% | 24,671 psi | 56% | 1237 fps | 100% |
| Hodgdon VARGET | <<locked>> | 88% | 37,608 psi | 85% | 2165 fps | 95.4% |
| IMR 3031 | 34.4 gr | 80% | 28,776 psi | 65% | 2044 fps | 98.1% |
| IMR 3031 | 34.4 gr | 80% | 28,645 psi | 65% | 2041 fps | 98% |
| IMR 8208 XBR | <<locked>> | 82% | 34,098 psi | 77% | 2087 fps | 95.2% |
| IMR 8208 XBR | <<locked>> | 82% | 33,968 psi | 77% | 2083 fps | 95.1% |
| Lovex D073.5 | <<locked>> | 80% | 34,838 psi | 79% | 2110 fps | 96.7% |
| Lovex D073.5 | <<locked>> | 80% | 34,708 psi | 78% | 2106 fps | 96.6% |
| Lovex D073.6 | <<locked>> | 82% | 29,356 psi | 66% | 2044 fps | 95.7% |
| Lovex D073.6 | <<locked>> | 82% | 29,240 psi | 66% | 2041 fps | 95.6% |
| Lovex S062 | <<locked>> | 88% | 33,707 psi | 76% | 2100 fps | 95.3% |
| Lovex S062 | <<locked>> | 88% | 33,591 psi | 76% | 2096 fps | 95.2% |
| Norma 201 | <<locked>> | 84% | 33,286 psi | 75% | 2073 fps | 95.1% |
| Norma 201 | <<locked>> | 84% | 33,388 psi | 75% | 2073 fps | 95.1% |
| Norma 202 | <<locked>> | 80% | 29,211 psi | 66% | 2008 fps | 96.4% |
| Norma 202 | <<locked>> | 80% | 29,080 psi | 66% | 2005 fps | 96.3% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 24,845 psi | 56% | 1273 fps | 100% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 24,642 psi | 56% | 1266 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 35,911 psi | 81% | 2123 fps | 97.4% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 35,810 psi | 81% | 2119 fps | 97.3% |
| ReloadSwiss RS 60 | 42.9 gr | 92% | 33,475 psi | 76% | 2172 fps | 95.7% |
| ReloadSwiss RS 60 | 42.9 gr | 92% | 33,402 psi | 76% | 2169 fps | 95.6% |
| Rottweil R 901 | <<locked>> | 80% | 32,909 psi | 74% | 2047 fps | 97.3% |
| Rottweil R 901 | <<locked>> | 80% | 32,793 psi | 74% | 2044 fps | 97.3% |
| Rottweil R 902 | <<locked>> | 86% | 33,794 psi | 76% | 2077 fps | 95.2% |
| Rottweil R 902 | <<locked>> | 86% | 33,663 psi | 76% | 2073 fps | 95.2% |
| Rottweil R 903 | <<locked>> | 96% | 36,274 psi | 82% | 2192 fps | 95.5% |
| Rottweil R 903 | <<locked>> | 96% | 36,172 psi | 82% | 2188 fps | 95.4% |
| Shooters World Match Rifle | <<locked>> | 82% | 29,356 psi | 66% | 2044 fps | 95.7% |
| Shooters World Match Rifle | <<locked>> | 82% | 29,240 psi | 66% | 2041 fps | 95.6% |
| Shooters World Precision | <<locked>> | 88% | 33,707 psi | 76% | 2100 fps | 95.3% |
| Shooters World Precision | <<locked>> | 88% | 33,591 psi | 76% | 2096 fps | 95.2% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 31,444 psi | 71% | 1978 fps | 97% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 31,531 psi | 71% | 1978 fps | 97% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 25,440 psi | 58% | 1864 fps | 95.8% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 25,556 psi | 58% | 1867 fps | 95.9% |
| Somchem S321 | <<locked>> | 80% | 33,576 psi | 76% | 2103 fps | 95.5% |
| Somchem S321 | <<locked>> | 80% | 33,460 psi | 76% | 2100 fps | 95.4% |
| Somchem S335 | <<locked>> | 80% | 30,806 psi | 70% | 1985 fps | 97.7% |
| Somchem S335 | <<locked>> | 80% | 30,705 psi | 69% | 1982 fps | 97.7% |
| Vihtavuori N130 | <<locked>> | 80% | 35,781 psi | 81% | 2060 fps | 100% |
| Vihtavuori N130 | <<locked>> | 80% | 35,926 psi | 81% | 2060 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 31,212 psi | 71% | 1991 fps | 99.1% |
| Vihtavuori N133 | <<locked>> | 80% | 31,343 psi | 71% | 1991 fps | 99.1% |
| Vihtavuori N135 | <<locked>> | 80% | 26,266 psi | 59% | 1955 fps | 98.2% |
| Vihtavuori N135 | <<locked>> | 80% | 26,368 psi | 60% | 1955 fps | 98.2% |
| Vihtavuori N140 | <<locked>> | 80% | 27,673 psi | 63% | 1959 fps | 96.1% |
| Vihtavuori N140 | <<locked>> | 80% | 27,572 psi | 62% | 1955 fps | 96% |
| Vihtavuori N150 | <<locked>> | 92% | 32,155 psi | 73% | 2070 fps | 95.2% |
| Vihtavuori N150 | <<locked>> | 92% | 32,068 psi | 72% | 2067 fps | 95.2% |
| Vihtavuori N530 | <<locked>> | 82% | 33,779 psi | 76% | 2080 fps | 95.2% |
| Vihtavuori N530 | <<locked>> | 82% | 33,663 psi | 76% | 2077 fps | 95.2% |
| Vihtavuori N540 | <<locked>> | 82% | 28,268 psi | 64% | 1985 fps | 95.7% |
| Vihtavuori N540 | <<locked>> | 82% | 28,166 psi | 64% | 1985 fps | 95.7% |
| Winchester 748 | <<locked>> | 82% | 32,372 psi | 73% | 2103 fps | 95.7% |
| Winchester 748 | <<locked>> | 82% | 32,256 psi | 73% | 2103 fps | 95.6% |
| Winchester StaBALL Match | <<locked>> | 88% | 36,143 psi | 82% | 2169 fps | 95.1% |
| Winchester StaBALL Match | <<locked>> | 88% | 36,056 psi | 82% | 2165 fps | 95% |
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 93 powders for .33 Win. loaded with the .338 | 225gr | Nosler Partition. ReloadSwiss RS 60 delivers the highest muzzle velocity at 2,274 fps; across all powders the maximum-charge window runs from 1,388 fps to 2,274 fps. Hodgdon TrailBoss gives the best case fill at 100 %, and 93 of the 93 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (305 MPa), the top charges use 75–90 %, leaving at least 10 % headroom. The 225.0 gr projectile in 0.338" calls for a 1:15.5 twist; slower twists will usually not stabilise this weight. Hodgdon TrailBoss, Hodgdon TrailBoss, ReloadSwiss RS 14 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, Hodgdon BL-C2, IMR 3031 rank at the top here: for .33 Win. with the .338 | 225gr | Nosler Partition 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.