Load Specifications
Load data in caliber .33 Win. with .338 | 200gr | NorthFork Bonded Core bullet and 37 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 Accurate 2520.
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>> | 88% | 40,016 psi | 90% | 2329 fps | 99.8% |
| Accurate 2460 | <<locked>> | 84% | 38,130 psi | 86% | 2320 fps | 97.8% |
| Accurate 2495 | <<locked>> | 94% | 37,652 psi | 85% | 2359 fps | 99.8% |
| Accurate 2520 | <<locked>> | 88% | 38,203 psi | 86% | 2362 fps | 97.5% |
| Accurate 4064 | <<locked>> | 98% | 39,943 psi | 90% | 2421 fps | 98.9% |
| ADI Benchmark 8208 | <<locked>> | 88% | 39,175 psi | 89% | 2336 fps | 95.7% |
| Alliant AR-Comp | <<locked>> | 90% | 39,378 psi | 89% | 2398 fps | 100% |
| Alliant Reloder-10x | <<locked>> | 82% | 38,218 psi | 86% | 2306 fps | 100% |
| Hodgdon Benchmark | <<locked>> | 86% | 39,392 psi | 89% | 2297 fps | 96.4% |
| Hodgdon BL-C2 | <<locked>> | 90% | 38,754 psi | 88% | 2392 fps | 96.4% |
| Hodgdon H322 | <<locked>> | 84% | 39,247 psi | 89% | 2359 fps | 99% |
| Hodgdon H335 | <<locked>> | 84% | 39,595 psi | 90% | 2369 fps | 98.3% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 33,040 psi | 75% | 1496 fps | 100% |
| IMR 3031 | <<locked>> | 92% | 39,740 psi | 90% | 2428 fps | 99.6% |
| IMR 4198 | <<locked>> | 82% | 39,769 psi | 90% | 2290 fps | 100% |
| IMR 8208 XBR | <<locked>> | 88% | 39,175 psi | 89% | 2336 fps | 95.7% |
| Lovex D073.5 | <<locked>> | 84% | 37,913 psi | 86% | 2320 fps | 96.5% |
| Lovex D073.6 | <<locked>> | 92% | 38,827 psi | 88% | 2385 fps | 97.6% |
| Norma 202 | <<locked>> | 90% | 38,203 psi | 86% | 2346 fps | 98.1% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 33,040 psi | 75% | 1532 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 84% | 38,986 psi | 88% | 2333 fps | 97.2% |
| ReloadSwiss RS 60 | <<locked>> | 98% | 38,856 psi | 88% | 2434 fps | 96.4% |
| Rottweil R 901 | <<locked>> | 88% | 39,668 psi | 90% | 2333 fps | 98.1% |
| Shooters World Match Rifle | <<locked>> | 92% | 38,827 psi | 88% | 2385 fps | 97.6% |
| SNPE Vectan SP 3 | <<locked>> | 82% | 38,870 psi | 88% | 2313 fps | 99.4% |
| SNPE Vectan Tubal 3000 | <<locked>> | 88% | 38,421 psi | 87% | 2260 fps | 97.9% |
| SNPE Vectan Tubal 5000 | <<locked>> | 96% | 39,523 psi | 89% | 2300 fps | 99% |
| Somchem S321 | <<locked>> | 86% | 38,957 psi | 88% | 2359 fps | 96% |
| Somchem S335 | <<locked>> | 90% | 39,784 psi | 90% | 2310 fps | 98.9% |
| Vihtavuori N130 | <<locked>> | 84% | 38,856 psi | 88% | 2270 fps | 100% |
| Vihtavuori N133 | <<locked>> | 88% | 38,043 psi | 86% | 2270 fps | 99.6% |
| Vihtavuori N135 | <<locked>> | 94% | 38,667 psi | 87% | 2362 fps | 99.9% |
| Vihtavuori N140 | <<locked>> | 92% | 38,261 psi | 86% | 2326 fps | 98.4% |
| Vihtavuori N150ᴾ | <<locked>> | 100% | 39,218 psi | 89% | 2356 fps | 96.4% |
| Vihtavuori N530 | <<locked>> | 88% | 39,218 psi | 89% | 2333 fps | 95.8% |
| Vihtavuori N540 | <<locked>> | 94% | 39,262 psi | 89% | 2362 fps | 98.1% |
| Winchester 748 | <<locked>> | 90% | 39,842 psi | 90% | 2408 fps | 96.9% |
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% | 31,212 psi | 71% | 2159 fps | 98.6% |
| Accurate 2460 | <<locked>> | 80% | 33,272 psi | 75% | 2224 fps | 96.4% |
| Accurate 2495 | <<locked>> | 80% | 23,670 psi | 54% | 2047 fps | 96.4% |
| Accurate 2520 | 40.8 gr | 82% | 31,053 psi | 70% | 2215 fps | 95.2% |
| Accurate 4064 | 39.7 gr | 86% | 27,325 psi | 62% | 2152 fps | 95.1% |
| ADI Benchmark 8208 | <<locked>> | 86% | 36,898 psi | 83% | 2290 fps | 95% |
| Alliant AR-Comp | <<locked>> | 80% | 28,558 psi | 65% | 2175 fps | 99.7% |
| Alliant Reloder-10x | <<locked>> | 80% | 35,911 psi | 81% | 2264 fps | 99.9% |
| Hodgdon Benchmark | <<locked>> | 82% | 35,085 psi | 79% | 2211 fps | 95.1% |
| Hodgdon BL-C2 | <<locked>> | 88% | 36,201 psi | 82% | 2339 fps | 95.6% |
| Hodgdon H322 | <<locked>> | 80% | 34,447 psi | 78% | 2264 fps | 98% |
| Hodgdon H335 | <<locked>> | 80% | 34,664 psi | 78% | 2274 fps | 97.1% |
| Hodgdon TrailBoss | <<locked>> | 80% | 24,366 psi | 55% | 1335 fps | 100% |
| IMR 3031 | 36.5 gr | 80% | 27,412 psi | 62% | 2152 fps | 96.5% |
| IMR 4198 | <<locked>> | 80% | 37,333 psi | 84% | 2247 fps | 100% |
| IMR 8208 XBR | <<locked>> | 86% | 36,898 psi | 83% | 2290 fps | 95% |
| Lovex D073.5 | <<locked>> | 82% | 35,389 psi | 80% | 2267 fps | 95.7% |
| Lovex D073.6 | <<locked>> | 86% | 31,705 psi | 72% | 2244 fps | 95.4% |
| Norma 202 | <<locked>> | 82% | 29,501 psi | 67% | 2159 fps | 95.3% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 24,482 psi | 55% | 1371 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 34,345 psi | 78% | 2241 fps | 95.8% |
| ReloadSwiss RS 60 | <<locked>> | 96% | 36,463 psi | 82% | 2379 fps | 95.4% |
| Rottweil R 901 | <<locked>> | 80% | 31,314 psi | 71% | 2159 fps | 95.7% |
| Shooters World Match Rifle | <<locked>> | 86% | 31,705 psi | 72% | 2244 fps | 95.4% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 36,448 psi | 82% | 2270 fps | 99.1% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 30,182 psi | 68% | 2093 fps | 95.4% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 27,630 psi | 62% | 2054 fps | 95.6% |
| Somchem S321 | <<locked>> | 84% | 36,506 psi | 83% | 2310 fps | 95.3% |
| Somchem S335 | <<locked>> | 80% | 29,414 psi | 66% | 2096 fps | 96.2% |
| Vihtavuori N130 | <<locked>> | 80% | 34,403 psi | 78% | 2185 fps | 99.6% |
| Vihtavuori N133 | <<locked>> | 80% | 29,921 psi | 68% | 2106 fps | 98.1% |
| Vihtavuori N135 | <<locked>> | 80% | 25,077 psi | 57% | 2060 fps | 96.7% |
| Vihtavuori N140 | <<locked>> | 82% | 28,166 psi | 64% | 2106 fps | 95.1% |
| Vihtavuori N150 | <<locked>> | 98% | 36,941 psi | 84% | 2310 fps | 95.7% |
| Vihtavuori N530 | <<locked>> | 86% | 36,637 psi | 83% | 2283 fps | 95% |
| Vihtavuori N540 | <<locked>> | 86% | 30,400 psi | 69% | 2178 fps | 95.4% |
| Winchester 748 | <<locked>> | 86% | 35,201 psi | 80% | 2313 fps | 95.4% |
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 37 powders for .33 Win. loaded with the .338 | 200gr | NorthFork Bonded Core. ReloadSwiss RS 60 delivers the highest muzzle velocity at 2,434 fps; across all powders the maximum-charge window runs from 1,496 fps to 2,434 fps. Hodgdon TrailBoss gives the best case fill at 100 %, and 37 of the 37 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 1:17.0 twist; slower twists will usually not stabilise this weight. Hodgdon TrailBoss, ReloadSwiss RS 14, Vihtavuori N150 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, Accurate 2520 rank at the top here: for .33 Win. with the .338 | 200gr | NorthFork Bonded Core 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.