Load Specifications
Bullet Manufacturer:Nosler
Bullet Weight:250 gr
Bullet Diameter:0.338"
Bullet Length:<<locked>>
Caliber:.338-06 A-Square load data
Case Length (l3):2.494"
Cartridge Length (C.O.L.):<<locked>>
Case Capacity:69 Grains of Water
Primer Size:Large Rifle (LR)
Barrel Length:24"
Max. allowed Pressure:63,091 psi
Recommended Twist Rate:1:15.5
Load data in caliber .338-06 A-Square with .338 | 250gr | Nosler Partition RN bullet and 108 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Power Pro 2000-MR, ReloadSwiss RS 52 and Hodgdon LEVERevolution.
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.
A valid access license is required to use the Personalized Load Calculator.
You can find more information in our FAQ: How can I use the Personalized Load Calculator?
Max Load - Barrel Length: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2015 | <<locked>> | 90% | 56,927 psi | 90% | 2320 fps | 100% |
| Accurate 2200 | <<locked>> | 82% | 57,087 psi | 90% | 2408 fps | 99.7% |
| Accurate 2460 | <<locked>> | 86% | 55,390 psi | 88% | 2346 fps | 100% |
| Accurate 2495 | <<locked>> | 94% | 53,838 psi | 85% | 2333 fps | 100% |
| Accurate 2520 | <<locked>> | 90% | 54,984 psi | 87% | 2388 fps | 100% |
| Accurate 2520 | <<locked>> | 90% | 54,984 psi | 87% | 2388 fps | 100% |
| Accurate 2700 | <<locked>> | 98% | 55,608 psi | 88% | 2333 fps | 96.3% |
| Accurate 4064 | <<locked>> | 96% | 53,766 psi | 85% | 2375 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 45,788 psi | 73% | 2343 fps | 98.3% |
| Accurate LT-30 | <<locked>> | 84% | 56,782 psi | 90% | 2270 fps | 100% |
| Accurate LT-32 | <<locked>> | 82% | 53,896 psi | 85% | 2254 fps | 100% |
| ADI AR 2206H | <<locked>> | 92% | 55,796 psi | 88% | 2405 fps | 99.9% |
| ADI AR 2208 | <<locked>> | 98% | 56,507 psi | 90% | 2398 fps | 99.7% |
| ADI AR 2219 | <<locked>> | 82% | 53,606 psi | 85% | 2336 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 90% | 54,955 psi | 87% | 2362 fps | 100% |
| Alliant AR-Comp | <<locked>> | 90% | 54,926 psi | 87% | 2343 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 86% | 56,666 psi | 90% | 2454 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 94% | 54,897 psi | 87% | 2500 fps | 99.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 98% | 55,825 psi | 88% | 2418 fps | 100% |
| Alliant Reloder-10x | <<locked>> | 86% | 56,797 psi | 90% | 2320 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 96% | 56,811 psi | 90% | 2438 fps | 99.8% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 45,730 psi | 72% | 2346 fps | 98.4% |
| Alliant Reloder-17ᴾ | <<locked>> | 100% | 52,562 psi | 83% | 2474 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 84% | 55,535 psi | 88% | 2274 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 92% | 55,230 psi | 88% | 2418 fps | 99.5% |
| Bofors RP3 | <<locked>> | 98% | 56,333 psi | 89% | 2434 fps | 100% |
| Bofors RP7ᴾ | <<locked>> | 100% | 53,621 psi | 85% | 2356 fps | 96.3% |
| Hodgdon Benchmark | <<locked>> | 88% | 54,070 psi | 86% | 2313 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 90% | 53,693 psi | 85% | 2395 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 88% | 55,448 psi | 88% | 2474 fps | 99.8% |
| Hodgdon H322 | <<locked>> | 88% | 54,955 psi | 87% | 2349 fps | 100% |
| Hodgdon H335 | <<locked>> | 84% | 56,594 psi | 90% | 2382 fps | 100% |
| Hodgdon H380 | <<locked>> | 96% | 54,331 psi | 86% | 2402 fps | 99% |
| Hodgdon H414ᴾ | <<locked>> | 100% | 54,592 psi | 87% | 2457 fps | 97.3% |
| Hodgdon H4198 | <<locked>> | 82% | 55,085 psi | 87% | 2267 fps | 100% |
| Hodgdon H4895 | <<locked>> | 92% | 56,260 psi | 89% | 2415 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 41,742 psi | 66% | 2247 fps | 98.8% |
| Hodgdon LEVERevolution | <<locked>> | 96% | 54,694 psi | 87% | 2441 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,766 psi | 55% | 1394 fps | 100% |
| Hodgdon VARGET | <<locked>> | 96% | 56,086 psi | 89% | 2395 fps | 100% |
| IMR 3031 | <<locked>> | 96% | 57,087 psi | 90% | 2415 fps | 100% |
| IMR 4064 | <<locked>> | 98% | 55,143 psi | 87% | 2372 fps | 99.7% |
| IMR 4166 Enduron | <<locked>> | 98% | 54,984 psi | 87% | 2346 fps | 97.1% |
| IMR 4198 | <<locked>> | 84% | 54,114 psi | 86% | 2251 fps | 100% |
| IMR 4451 Enduronᴾ | <<locked>> | 100% | 55,622 psi | 88% | 2385 fps | 97.2% |
| IMR 4831ᴾ | <<locked>> | 100% | 38,827 psi | 62% | 2215 fps | 96.8% |
| IMR 4895 | <<locked>> | 94% | 54,520 psi | 86% | 2421 fps | 99.9% |
| IMR 8208 XBR | <<locked>> | 90% | 54,955 psi | 87% | 2362 fps | 100% |
| Lovex D073.5 | <<locked>> | 86% | 55,187 psi | 87% | 2356 fps | 100% |
| Lovex D073.6 | <<locked>> | 92% | 54,592 psi | 87% | 2382 fps | 100% |
| Lovex S060 | <<locked>> | 92% | 56,086 psi | 89% | 2343 fps | 99.9% |
| Lovex S062 | <<locked>> | 96% | 55,448 psi | 88% | 2382 fps | 100% |
| Lovex S065ᴾ | <<locked>> | 100% | 51,053 psi | 81% | 2333 fps | 97.8% |
| Lovex S070ᴾ | <<locked>> | 100% | 48,472 psi | 77% | 2316 fps | 96.2% |
| Norma 200 | <<locked>> | 82% | 56,695 psi | 90% | 2297 fps | 100% |
| Norma 201 | <<locked>> | 92% | 54,346 psi | 86% | 2356 fps | 100% |
| Norma 202 | <<locked>> | 92% | 54,810 psi | 87% | 2362 fps | 100% |
| Norma 203B | <<locked>> | 96% | 55,898 psi | 89% | 2428 fps | 99.9% |
| Norma URPᴾ | <<locked>> | 100% | 45,803 psi | 73% | 2336 fps | 98.2% |
| Ramshot Big Game | <<locked>> | 96% | 56,028 psi | 89% | 2451 fps | 99.9% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 45,266 psi | 72% | 2329 fps | 96.2% |
| Ramshot TAC | <<locked>> | 90% | 55,492 psi | 88% | 2382 fps | 98.6% |
| Ramshot Wild Boar | <<locked>> | 90% | 54,433 psi | 86% | 2398 fps | 99.8% |
| Ramshot X-Terminator | <<locked>> | 88% | 56,434 psi | 89% | 2372 fps | 99.8% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 34,998 psi | 55% | 1424 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 86% | 54,824 psi | 87% | 2352 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 96% | 54,911 psi | 87% | 2385 fps | 97.8% |
| ReloadSwiss RS 52 | <<locked>> | 94% | 56,681 psi | 90% | 2493 fps | 99.8% |
| ReloadSwiss RS 60ᴾ | <<locked>> | 100% | 56,173 psi | 89% | 2523 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 45,266 psi | 72% | 2356 fps | 97.9% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 46,746 psi | 74% | 2375 fps | 97.4% |
| Rottweil R 901 | <<locked>> | 90% | 55,695 psi | 88% | 2343 fps | 100% |
| Rottweil R 902 | <<locked>> | 94% | 54,969 psi | 87% | 2356 fps | 100% |
| Rottweil R 903ᴾ | <<locked>> | 100% | 55,811 psi | 88% | 2421 fps | 100% |
| Rottweil R 907ᴾ | <<locked>> | 100% | 53,621 psi | 85% | 2356 fps | 96.3% |
| Shooters World Long Rifleᴾ | <<locked>> | 100% | 51,053 psi | 81% | 2333 fps | 97.8% |
| Shooters World Match Rifle | <<locked>> | 92% | 54,592 psi | 87% | 2382 fps | 100% |
| Shooters World Precision | <<locked>> | 96% | 55,448 psi | 88% | 2382 fps | 100% |
| Shooters World SW4350ᴾ | <<locked>> | 100% | 48,472 psi | 77% | 2316 fps | 96.2% |
| Shooters World Tactical Rifle | <<locked>> | 84% | 54,926 psi | 87% | 2329 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 82% | 54,114 psi | 86% | 2349 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 98% | 54,215 psi | 86% | 2434 fps | 99.8% |
| SNPE Vectan SP 3 | <<locked>> | 84% | 54,404 psi | 86% | 2300 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 90% | 53,693 psi | 85% | 2362 fps | 98.8% |
| SNPE Vectan SP 9 | <<locked>> | 92% | 53,896 psi | 85% | 2382 fps | 99.8% |
| SNPE Vectan Tubal 3000 | <<locked>> | 92% | 56,927 psi | 90% | 2310 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 98% | 56,072 psi | 89% | 2303 fps | 100% |
| SNPE Vectan Tubal 7000ᴾ | <<locked>> | 100% | 51,547 psi | 82% | 2297 fps | 96.5% |
| Somchem S321 | <<locked>> | 88% | 56,333 psi | 89% | 2398 fps | 100% |
| Somchem S335 | <<locked>> | 92% | 55,535 psi | 88% | 2306 fps | 100% |
| Somchem S341 | <<locked>> | 92% | 56,492 psi | 90% | 2398 fps | 99.9% |
| Somchem S355ᴾ | <<locked>> | 100% | 56,318 psi | 89% | 2418 fps | 100% |
| Somchem S365ᴾ | <<locked>> | 100% | 40,814 psi | 65% | 2297 fps | 99.6% |
| Unknown powderᴾ | <<locked>> | 100% | 50,444 psi | 80% | 2388 fps | 98.3% |
| Vihtavuori N130 | <<locked>> | 88% | 56,695 psi | 90% | 2277 fps | 100% |
| Vihtavuori N133 | <<locked>> | 92% | 56,782 psi | 90% | 2293 fps | 100% |
| Vihtavuori N135 | <<locked>> | 94% | 53,722 psi | 85% | 2323 fps | 100% |
| Vihtavuori N140 | <<locked>> | 94% | 55,332 psi | 88% | 2343 fps | 100% |
| Vihtavuori N150ᴾ | <<locked>> | 100% | 54,549 psi | 86% | 2362 fps | 100% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 48,399 psi | 77% | 2336 fps | 98.4% |
| Vihtavuori N530 | <<locked>> | 90% | 55,535 psi | 88% | 2365 fps | 100% |
| Vihtavuori N540 | <<locked>> | 96% | 56,913 psi | 90% | 2385 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 47,224 psi | 75% | 2339 fps | 98.2% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 33,910 psi | 54% | 2178 fps | 95.9% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 49,240 psi | 78% | 2323 fps | 99.7% |
| Winchester 748 | <<locked>> | 88% | 55,709 psi | 88% | 2418 fps | 100% |
| Winchester 760ᴾ | <<locked>> | 100% | 54,592 psi | 87% | 2457 fps | 97.3% |
| Winchester StaBALL Match | <<locked>> | 86% | 55,608 psi | 88% | 2415 fps | 100% |
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% | 41,945 psi | 66% | 2133 fps | 100% |
| Accurate 2200 | <<locked>> | 80% | 53,345 psi | 85% | 2359 fps | 99.4% |
| Accurate 2460 | <<locked>> | 80% | 45,397 psi | 72% | 2221 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 34,374 psi | 54% | 2064 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 39,189 psi | 62% | 2172 fps | 99.8% |
| Accurate 2520 | <<locked>> | 80% | 39,189 psi | 62% | 2172 fps | 99.8% |
| Accurate 2700 | <<locked>> | 96% | 52,098 psi | 83% | 2290 fps | 95.6% |
| Accurate 4064 | <<locked>> | 80% | 32,518 psi | 52% | 2054 fps | 99.5% |
| Accurate 4350 | <<locked>> | 92% | 34,722 psi | 55% | 2156 fps | 95.5% |
| Accurate LT-30 | <<locked>> | 80% | 50,372 psi | 80% | 2198 fps | 100% |
| Accurate LT-32 | <<locked>> | 80% | 50,778 psi | 80% | 2215 fps | 100% |
| ADI AR 2206H | <<locked>> | 80% | 38,406 psi | 61% | 2146 fps | 97.8% |
| ADI AR 2208 | <<locked>> | 80% | 32,837 psi | 52% | 2024 fps | 95.2% |
| ADI AR 2219 | <<locked>> | 80% | 50,401 psi | 80% | 2297 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 80% | 40,437 psi | 64% | 2156 fps | 99.1% |
| Alliant AR-Comp | <<locked>> | 80% | 39,436 psi | 63% | 2152 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 46,775 psi | 74% | 2320 fps | 99.6% |
| Alliant Power Pro 2000-MR | 44.5 gr | 80% | 34,519 psi | 55% | 2149 fps | 95.3% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 31,763 psi | 50% | 2037 fps | 96.9% |
| Alliant Reloder-10x | <<locked>> | 80% | 47,282 psi | 75% | 2208 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 34,360 psi | 54% | 2087 fps | 96.1% |
| Alliant Reloder-16 | <<locked>> | 92% | 35,998 psi | 57% | 2165 fps | 95.7% |
| Alliant Reloder-17 | <<locked>> | 84% | 31,198 psi | 49% | 2090 fps | 95.7% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 49,139 psi | 78% | 2198 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 37,246 psi | 59% | 2146 fps | 96.3% |
| Bofors RP3 | <<locked>> | 80% | 31,111 psi | 49% | 2037 fps | 96.8% |
| Bofors RP7 | <<locked>> | 98% | 50,546 psi | 80% | 2313 fps | 95.7% |
| Hodgdon Benchmark | <<locked>> | 80% | 42,612 psi | 68% | 2152 fps | 99.6% |
| Hodgdon BL-C2 | <<locked>> | 80% | 38,377 psi | 61% | 2169 fps | 99.2% |
| Hodgdon CFE223 | <<locked>> | 80% | 42,221 psi | 67% | 2280 fps | 98.2% |
| Hodgdon H322 | <<locked>> | 80% | 42,873 psi | 68% | 2192 fps | 100% |
| Hodgdon H335 | <<locked>> | 80% | 49,371 psi | 78% | 2297 fps | 100% |
| Hodgdon H380 | <<locked>> | 84% | 36,579 psi | 58% | 2126 fps | 95.3% |
| Hodgdon H414 | <<locked>> | 94% | 44,512 psi | 71% | 2310 fps | 95.1% |
| Hodgdon H4198 | <<locked>> | 80% | 52,199 psi | 83% | 2231 fps | 100% |
| Hodgdon H4895 | <<locked>> | 80% | 38,682 psi | 61% | 2156 fps | 98.3% |
| Hodgdon Hybrid 100V | <<locked>> | 90% | 30,879 psi | 49% | 2037 fps | 95.7% |
| Hodgdon LEVERevolution | 42.7 gr | 80% | 32,619 psi | 52% | 2083 fps | 97.2% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,889 psi | 41% | 1243 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 34,519 psi | 55% | 2064 fps | 97.2% |
| IMR 3031 | <<locked>> | 80% | 34,621 psi | 55% | 2103 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 32,126 psi | 51% | 2001 fps | 95.3% |
| IMR 4166 Enduron | <<locked>> | 92% | 46,166 psi | 73% | 2221 fps | 95.3% |
| IMR 4198 | <<locked>> | 80% | 48,124 psi | 76% | 2178 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 94% | 46,441 psi | 74% | 2254 fps | 95.3% |
| IMR 4831 | <<locked>> | 96% | 34,374 psi | 54% | 2129 fps | 95.4% |
| IMR 4895 | <<locked>> | 80% | 35,114 psi | 56% | 2113 fps | 97% |
| IMR 8208 XBR | <<locked>> | 80% | 40,437 psi | 64% | 2156 fps | 99.1% |
| Lovex D073.5 | <<locked>> | 80% | 44,991 psi | 71% | 2224 fps | 99.9% |
| Lovex D073.6 | <<locked>> | 80% | 36,811 psi | 58% | 2133 fps | 99.6% |
| Lovex S060 | <<locked>> | 80% | 39,247 psi | 62% | 2100 fps | 97.9% |
| Lovex S062 | <<locked>> | 80% | 34,113 psi | 54% | 2057 fps | 97.9% |
| Lovex S065 | <<locked>> | 92% | 40,089 psi | 64% | 2165 fps | 95.3% |
| Lovex S070 | <<locked>> | 98% | 45,426 psi | 72% | 2270 fps | 95.5% |
| Norma 200 | <<locked>> | 80% | 53,374 psi | 85% | 2260 fps | 100% |
| Norma 201 | <<locked>> | 80% | 37,724 psi | 60% | 2110 fps | 98.7% |
| Norma 202 | <<locked>> | 80% | 37,666 psi | 60% | 2119 fps | 99.9% |
| Norma 203B | <<locked>> | 80% | 33,721 psi | 53% | 2080 fps | 96.5% |
| Norma URP | <<locked>> | 92% | 35,549 psi | 56% | 2156 fps | 95.4% |
| Ramshot Big Game | <<locked>> | 80% | 33,054 psi | 52% | 2083 fps | 95.9% |
| Ramshot Hunter | <<locked>> | 98% | 42,424 psi | 67% | 2283 fps | 95.4% |
| Ramshot TAC | <<locked>> | 80% | 40,292 psi | 64% | 2156 fps | 95.6% |
| Ramshot Wild Boar | <<locked>> | 80% | 39,392 psi | 62% | 2175 fps | 97.9% |
| Ramshot X-Terminator | <<locked>> | 80% | 43,627 psi | 69% | 2195 fps | 98.6% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,194 psi | 42% | 1273 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 45,310 psi | 72% | 2224 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 88% | 42,380 psi | 67% | 2201 fps | 95.1% |
| ReloadSwiss RS 52 | 43.2 gr | 80% | 35,404 psi | 56% | 2165 fps | 96.4% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 29,254 psi | 46% | 2051 fps | 97.4% |
| ReloadSwiss RS 62 | <<locked>> | 94% | 37,246 psi | 59% | 2218 fps | 95.8% |
| ReloadSwiss RS 70 | <<locked>> | 96% | 40,770 psi | 65% | 2274 fps | 95.7% |
| Rottweil R 901 | <<locked>> | 80% | 41,466 psi | 66% | 2149 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 35,897 psi | 57% | 2070 fps | 98.3% |
| Rottweil R 903 | <<locked>> | 80% | 29,153 psi | 46% | 1988 fps | 95.7% |
| Rottweil R 907 | <<locked>> | 98% | 50,546 psi | 80% | 2313 fps | 95.7% |
| Shooters World Long Rifle | <<locked>> | 92% | 40,089 psi | 64% | 2165 fps | 95.3% |
| Shooters World Match Rifle | <<locked>> | 80% | 36,811 psi | 58% | 2133 fps | 99.6% |
| Shooters World Precision | <<locked>> | 80% | 34,113 psi | 54% | 2057 fps | 97.9% |
| Shooters World SW4350 | <<locked>> | 98% | 45,426 psi | 72% | 2270 fps | 95.5% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 47,790 psi | 76% | 2238 fps | 99.7% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 50,749 psi | 80% | 2306 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 32,358 psi | 51% | 2073 fps | 95.7% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 48,066 psi | 76% | 2224 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 38,072 psi | 60% | 2126 fps | 95.6% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 37,014 psi | 59% | 2119 fps | 97.4% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 39,320 psi | 62% | 2077 fps | 99.9% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 32,285 psi | 51% | 1969 fps | 99.7% |
| SNPE Vectan Tubal 7000 | <<locked>> | 96% | 45,092 psi | 71% | 2211 fps | 95.2% |
| Somchem S321 | <<locked>> | 80% | 43,279 psi | 69% | 2221 fps | 99.6% |
| Somchem S335 | <<locked>> | 80% | 38,899 psi | 62% | 2083 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 37,927 psi | 60% | 2133 fps | 97.5% |
| Somchem S355 | <<locked>> | 80% | 30,414 psi | 48% | 2001 fps | 95.9% |
| Somchem S365 | <<locked>> | 86% | 26,426 psi | 42% | 1978 fps | 95.1% |
| Unknown powder | <<locked>> | 90% | 36,651 psi | 58% | 2162 fps | 95% |
| Vihtavuori N130 | <<locked>> | 80% | 44,570 psi | 71% | 2133 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 39,450 psi | 63% | 2077 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 34,780 psi | 55% | 2060 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 35,563 psi | 56% | 2067 fps | 99.8% |
| Vihtavuori N150 | <<locked>> | 80% | 28,674 psi | 45% | 1949 fps | 96.7% |
| Vihtavuori N160 | <<locked>> | 90% | 35,099 psi | 56% | 2116 fps | 95.1% |
| Vihtavuori N530 | <<locked>> | 80% | 40,393 psi | 64% | 2152 fps | 99.2% |
| Vihtavuori N540 | <<locked>> | 80% | 34,200 psi | 54% | 2057 fps | 99.5% |
| Vihtavuori N550 | <<locked>> | 92% | 36,492 psi | 58% | 2162 fps | 95.5% |
| Vihtavuori N555 | <<locked>> | 98% | 31,908 psi | 51% | 2136 fps | 95.1% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 31,430 psi | 50% | 2014 fps | 95.9% |
| Winchester 748 | <<locked>> | 80% | 42,337 psi | 67% | 2238 fps | 99.8% |
| Winchester 760 | <<locked>> | 94% | 44,512 psi | 71% | 2310 fps | 95.1% |
| Winchester StaBALL Match | <<locked>> | 80% | 44,846 psi | 71% | 2270 fps | 99.3% |
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 117 powders for .338-06 A-Square loaded with the .338 | 250gr | Nosler Partition RN. ReloadSwiss RS 60 delivers the highest muzzle velocity at 2,523 fps; across all powders the maximum-charge window runs from 1,394 fps to 2,523 fps. Accurate 3100 gives the best case fill at 100 %, and 117 of the 117 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (435 MPa), the top charges use 46–90 %, leaving at least 10 % headroom. The 250.0 gr projectile in 0.338" calls for a 1:15.5 twist; slower twists will usually not stabilise this weight. Accurate 3100, Accurate 4350, Alliant Reloder-16 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. Alliant Power Pro 2000-MR, ReloadSwiss RS 52, Hodgdon LEVERevolution rank at the top here: for .338-06 A-Square with the .338 | 250gr | Nosler Partition RN they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate 3100, Alliant Reloder-26, Hodgdon H4350 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.