Load Specifications
Load data in caliber .33 Win. with .338 | 200gr | Woodleigh PP SN bullet and 38 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are IMR 3031, Accurate 4064 and Winchester 748.
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% | 38,624 psi | 87% | 2316 fps | 99.8% |
| Accurate 2460 | <<locked>> | 84% | 39,218 psi | 89% | 2352 fps | 98.2% |
| Accurate 2495 | <<locked>> | 94% | 38,928 psi | 88% | 2392 fps | 99.9% |
| Accurate 2520 | <<locked>> | 88% | 39,262 psi | 89% | 2392 fps | 97.9% |
| Accurate 4064 | <<locked>> | 96% | 38,682 psi | 87% | 2408 fps | 98.8% |
| Alliant AR-Comp | <<locked>> | 88% | 37,913 psi | 86% | 2382 fps | 100% |
| Alliant Reloder-10x | <<locked>> | 82% | 39,073 psi | 88% | 2333 fps | 100% |
| Hodgdon Benchmark | <<locked>> | 84% | 38,014 psi | 86% | 2280 fps | 96.2% |
| Hodgdon BL-C2 | <<locked>> | 90% | 39,958 psi | 90% | 2425 fps | 96.9% |
| Hodgdon H322 | <<locked>> | 82% | 37,608 psi | 85% | 2339 fps | 98.9% |
| Hodgdon H335 | <<locked>> | 82% | 38,116 psi | 86% | 2356 fps | 98.2% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 33,156 psi | 75% | 1509 fps | 100% |
| IMR 3031 | <<locked>> | 90% | 38,508 psi | 87% | 2415 fps | 99.6% |
| Lovex D073.5 | <<locked>> | 84% | 38,972 psi | 88% | 2349 fps | 97% |
| Lovex D073.6 | <<locked>> | 90% | 37,521 psi | 85% | 2372 fps | 97.5% |
| Lovex S062 | <<locked>> | 94% | 39,726 psi | 90% | 2379 fps | 96.3% |
| Norma 201 | <<locked>> | 90% | 39,349 psi | 89% | 2356 fps | 96.1% |
| Norma 202 | <<locked>> | 90% | 39,015 psi | 88% | 2372 fps | 98.4% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 33,156 psi | 75% | 1545 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 84% | 39,885 psi | 90% | 2362 fps | 97.6% |
| ReloadSwiss RS 60 | <<locked>> | 98% | 39,740 psi | 90% | 2467 fps | 97% |
| Rottweil R 901 | <<locked>> | 86% | 38,334 psi | 87% | 2320 fps | 98% |
| Rottweil R 902 | <<locked>> | 92% | 39,523 psi | 89% | 2349 fps | 96.1% |
| Shooters World Match Rifle | <<locked>> | 90% | 37,521 psi | 85% | 2372 fps | 97.5% |
| Shooters World Precision | <<locked>> | 94% | 39,726 psi | 90% | 2379 fps | 96.3% |
| SNPE Vectan SP 3 | <<locked>> | 82% | 39,740 psi | 90% | 2339 fps | 99.6% |
| SNPE Vectan Tubal 3000 | <<locked>> | 88% | 39,581 psi | 89% | 2293 fps | 98.3% |
| SNPE Vectan Tubal 5000 | <<locked>> | 94% | 38,174 psi | 86% | 2290 fps | 98.9% |
| Somchem S321 | <<locked>> | 84% | 37,478 psi | 85% | 2339 fps | 95.8% |
| Somchem S335 | <<locked>> | 88% | 38,551 psi | 87% | 2297 fps | 98.9% |
| Vihtavuori N130 | <<locked>> | 84% | 39,624 psi | 90% | 2293 fps | 100% |
| Vihtavuori N133 | <<locked>> | 88% | 39,233 psi | 89% | 2303 fps | 99.8% |
| Vihtavuori N135 | <<locked>> | 94% | 39,914 psi | 90% | 2392 fps | 100% |
| Vihtavuori N140 | <<locked>> | 92% | 39,262 psi | 89% | 2356 fps | 98.7% |
| Vihtavuori N150 | <<locked>> | 98% | 37,985 psi | 86% | 2343 fps | 96.2% |
| Vihtavuori N530 | <<locked>> | 88% | 39,972 psi | 90% | 2359 fps | 96.3% |
| Vihtavuori N540 | <<locked>> | 92% | 37,898 psi | 86% | 2346 fps | 98% |
| Winchester 748 | <<locked>> | 88% | 38,508 psi | 87% | 2395 fps | 96.8% |
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% | 31,995 psi | 72% | 2185 fps | 98.9% |
| Accurate 2460 | <<locked>> | 80% | 34,418 psi | 78% | 2257 fps | 97% |
| Accurate 2495 | <<locked>> | 80% | 24,569 psi | 56% | 2077 fps | 97% |
| Accurate 2520 | <<locked>> | 82% | 31,879 psi | 72% | 2244 fps | 95.7% |
| Accurate 4064 | 40.7 gr | 86% | 28,224 psi | 64% | 2185 fps | 95.7% |
| Alliant AR-Comp | <<locked>> | 80% | 29,472 psi | 67% | 2208 fps | 99.9% |
| Alliant Reloder-10x | <<locked>> | 80% | 36,753 psi | 83% | 2290 fps | 99.9% |
| Hodgdon Benchmark | <<locked>> | 82% | 35,882 psi | 81% | 2241 fps | 95.6% |
| Hodgdon BL-C2 | <<locked>> | 86% | 34,824 psi | 79% | 2323 fps | 95.4% |
| Hodgdon H322 | <<locked>> | 80% | 35,404 psi | 80% | 2293 fps | 98.4% |
| Hodgdon H335 | <<locked>> | 80% | 35,679 psi | 81% | 2306 fps | 97.6% |
| Hodgdon TrailBoss | <<locked>> | 80% | 24,410 psi | 55% | 1345 fps | 100% |
| IMR 3031 | 37.4 gr | 80% | 28,050 psi | 63% | 2178 fps | 97% |
| Lovex D073.5 | <<locked>> | 80% | 33,939 psi | 77% | 2251 fps | 95.4% |
| Lovex D073.6 | <<locked>> | 84% | 30,618 psi | 69% | 2228 fps | 95.2% |
| Lovex S062 | <<locked>> | 92% | 37,217 psi | 84% | 2329 fps | 95.5% |
| Norma 201 | <<locked>> | 88% | 37,086 psi | 84% | 2310 fps | 95.4% |
| Norma 202 | <<locked>> | 80% | 28,543 psi | 65% | 2146 fps | 95.1% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 24,526 psi | 55% | 1381 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 35,215 psi | 80% | 2270 fps | 96.3% |
| ReloadSwiss RS 60 | <<locked>> | 94% | 35,085 psi | 79% | 2362 fps | 95.2% |
| Rottweil R 901 | <<locked>> | 80% | 32,242 psi | 73% | 2192 fps | 96.2% |
| Rottweil R 902 | <<locked>> | 90% | 37,304 psi | 84% | 2306 fps | 95.4% |
| Shooters World Match Rifle | <<locked>> | 84% | 30,618 psi | 69% | 2228 fps | 95.2% |
| Shooters World Precision | <<locked>> | 92% | 37,217 psi | 84% | 2329 fps | 95.5% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 37,333 psi | 84% | 2297 fps | 99.3% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 30,879 psi | 70% | 2119 fps | 95.9% |
| SNPE Vectan Tubal 5000 | <<locked>> | 82% | 26,513 psi | 60% | 2034 fps | 95.3% |
| Somchem S321 | <<locked>> | 82% | 35,172 psi | 80% | 2293 fps | 95.1% |
| Somchem S335 | <<locked>> | 80% | 30,240 psi | 68% | 2126 fps | 96.7% |
| Vihtavuori N130 | <<locked>> | 80% | 35,172 psi | 80% | 2211 fps | 99.8% |
| Vihtavuori N133 | <<locked>> | 80% | 30,647 psi | 69% | 2133 fps | 98.4% |
| Vihtavuori N135 | <<locked>> | 80% | 25,715 psi | 58% | 2090 fps | 97.2% |
| Vihtavuori N140 | <<locked>> | 82% | 28,921 psi | 65% | 2136 fps | 95.7% |
| Vihtavuori N150 | <<locked>> | 96% | 35,824 psi | 81% | 2300 fps | 95.6% |
| Vihtavuori N530 | <<locked>> | 86% | 37,666 psi | 85% | 2316 fps | 95.6% |
| Vihtavuori N540 | <<locked>> | 84% | 29,370 psi | 66% | 2162 fps | 95.2% |
| Winchester 748 | 42.6 gr | 84% | 33,895 psi | 77% | 2297 fps | 95.2% |
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 38 powders for .33 Win. loaded with the .338 | 200gr | Woodleigh PP SN. ReloadSwiss RS 60 delivers the highest muzzle velocity at 2,467 fps; across all powders the maximum-charge window runs from 1,509 fps to 2,467 fps. Hodgdon TrailBoss gives the best case fill at 100 %, and 38 of the 38 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 200.0 gr projectile in 0.338" calls for a 1:6.0 twist; slower twists will usually not stabilise this weight. 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. IMR 3031, Accurate 4064, Winchester 748 rank at the top here: for .33 Win. with the .338 | 200gr | Woodleigh PP SN 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.