Load Specifications
Bullet Manufacturer:A-Square
Bullet Weight:400 gr
Bullet Diameter:0.416"
Bullet Length:<<locked>>
Caliber:10.3 x 68 Mag. load data
Case Length (l3):2.677"
Cartridge Length (C.O.L.):<<locked>>
Case Capacity:100.7 Grains of Water
Primer Size:Large Rifle Magnum (LRM)
Barrel Length:25.6"
Max. allowed Pressure:63,817 psi
Load data in caliber 10.3 x 68 Mag. with .416 | 400gr | A-Square LionLoad bullet and 112 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 60 and ReloadSwiss RS 52.
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: 25.6"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2015 | <<locked>> | 88% | 55,912 psi | 88% | 2211 fps | 100% |
| Accurate 2460 | <<locked>> | 84% | 54,346 psi | 85% | 2241 fps | 100% |
| Accurate 2495 | <<locked>> | 94% | 57,174 psi | 90% | 2267 fps | 100% |
| Accurate 2520 | <<locked>> | 88% | 54,070 psi | 85% | 2280 fps | 100% |
| Accurate 2700 | <<locked>> | 96% | 54,824 psi | 86% | 2241 fps | 97.3% |
| Accurate 4064 | <<locked>> | 96% | 56,768 psi | 89% | 2306 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 48,660 psi | 76% | 2293 fps | 99.4% |
| Accurate LT-30 | <<locked>> | 82% | 55,201 psi | 87% | 2162 fps | 100% |
| Accurate LT-32 | <<locked>> | 82% | 55,622 psi | 87% | 2185 fps | 100% |
| ADI AR 2206H | <<locked>> | 90% | 54,897 psi | 86% | 2303 fps | 100% |
| ADI AR 2208 | <<locked>> | 96% | 55,622 psi | 87% | 2297 fps | 99.9% |
| ADI AR 2219 | <<locked>> | 82% | 56,217 psi | 88% | 2267 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 90% | 57,551 psi | 90% | 2300 fps | 100% |
| Alliant AR-Comp | <<locked>> | 90% | 57,711 psi | 90% | 2270 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 84% | 55,869 psi | 88% | 2346 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 92% | 54,070 psi | 85% | 2398 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 96% | 55,201 psi | 87% | 2316 fps | 100% |
| Alliant Reloder-10x | <<locked>> | 84% | 55,869 psi | 88% | 2215 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 94% | 55,883 psi | 88% | 2333 fps | 100% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 47,993 psi | 75% | 2300 fps | 99.5% |
| Alliant Reloder-17ᴾ | <<locked>> | 100% | 55,651 psi | 87% | 2418 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 34,069 psi | 53% | 2093 fps | 98.1% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 37,144 psi | 58% | 2205 fps | 96.8% |
| Baschieri & Pellagri 106 | <<locked>> | 82% | 54,302 psi | 85% | 2165 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 90% | 54,418 psi | 85% | 2316 fps | 99.8% |
| Bofors RP3 | <<locked>> | 96% | 55,637 psi | 87% | 2329 fps | 100% |
| Bofors RP7ᴾ | <<locked>> | 100% | 56,202 psi | 88% | 2303 fps | 97.9% |
| Hodgdon Benchmark | <<locked>> | 88% | 56,144 psi | 88% | 2244 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 90% | 56,608 psi | 89% | 2333 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 86% | 54,592 psi | 86% | 2369 fps | 100% |
| Hodgdon H322 | <<locked>> | 88% | 57,595 psi | 90% | 2280 fps | 100% |
| Hodgdon H335 | <<locked>> | 82% | 55,434 psi | 87% | 2274 fps | 100% |
| Hodgdon H380 | <<locked>> | 96% | 57,130 psi | 90% | 2343 fps | 99.7% |
| Hodgdon H414ᴾ | <<locked>> | 100% | 57,566 psi | 90% | 2402 fps | 98.7% |
| Hodgdon H4198 | <<locked>> | 82% | 57,087 psi | 89% | 2198 fps | 100% |
| Hodgdon H4350ᴾ | <<locked>> | 100% | 51,590 psi | 81% | 2280 fps | 96.5% |
| Hodgdon H4895 | <<locked>> | 90% | 55,376 psi | 87% | 2310 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 44,092 psi | 69% | 2201 fps | 99.7% |
| Hodgdon LEVERevolution | <<locked>> | 96% | 57,638 psi | 90% | 2375 fps | 100% |
| Hodgdon Superformanceᴾ | <<locked>> | 100% | 53,243 psi | 83% | 2365 fps | 97.6% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,940 psi | 55% | 1342 fps | 100% |
| Hodgdon VARGET | <<locked>> | 94% | 55,376 psi | 87% | 2297 fps | 100% |
| IMR 3031 | <<locked>> | 94% | 56,347 psi | 88% | 2306 fps | 100% |
| IMR 4064 | <<locked>> | 98% | 57,464 psi | 90% | 2310 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 98% | 57,450 psi | 90% | 2290 fps | 98.5% |
| IMR 4198 | <<locked>> | 84% | 56,115 psi | 88% | 2178 fps | 100% |
| IMR 4350ᴾ | <<locked>> | 100% | 49,385 psi | 77% | 2241 fps | 96.8% |
| IMR 4451 Enduron | <<locked>> | 98% | 54,882 psi | 86% | 2290 fps | 98.1% |
| IMR 4831ᴾ | <<locked>> | 100% | 41,307 psi | 65% | 2175 fps | 98.5% |
| IMR 4895 | <<locked>> | 94% | 57,261 psi | 90% | 2359 fps | 100% |
| IMR 8208 XBR | <<locked>> | 90% | 57,551 psi | 90% | 2300 fps | 100% |
| Lovex D073.4 | <<locked>> | 84% | 56,797 psi | 89% | 2267 fps | 100% |
| Lovex D073.5 | <<locked>> | 84% | 54,273 psi | 85% | 2251 fps | 100% |
| Lovex D073.6 | <<locked>> | 92% | 57,580 psi | 90% | 2316 fps | 100% |
| Lovex S060 | <<locked>> | 90% | 54,926 psi | 86% | 2241 fps | 100% |
| Lovex S062 | <<locked>> | 94% | 54,810 psi | 86% | 2280 fps | 100% |
| Lovex S065ᴾ | <<locked>> | 100% | 53,751 psi | 84% | 2283 fps | 99% |
| Lovex S070ᴾ | <<locked>> | 100% | 51,010 psi | 80% | 2267 fps | 97.9% |
| Norma 201 | <<locked>> | 92% | 57,043 psi | 89% | 2293 fps | 100% |
| Norma 202 | <<locked>> | 92% | 57,522 psi | 90% | 2293 fps | 100% |
| Norma 203B | <<locked>> | 94% | 55,013 psi | 86% | 2323 fps | 100% |
| Norma URPᴾ | <<locked>> | 100% | 48,428 psi | 76% | 2287 fps | 99.3% |
| Ramshot Big Game | <<locked>> | 94% | 55,419 psi | 87% | 2346 fps | 100% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 47,558 psi | 75% | 2283 fps | 98% |
| Ramshot TAC | <<locked>> | 88% | 54,433 psi | 85% | 2280 fps | 99.2% |
| Ramshot Wild Boar | <<locked>> | 90% | 57,334 psi | 90% | 2336 fps | 100% |
| Ramshot X-Terminator | <<locked>> | 86% | 55,100 psi | 86% | 2264 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,302 psi | 55% | 1375 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 86% | 57,305 psi | 90% | 2283 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 96% | 57,566 psi | 90% | 2326 fps | 99% |
| ReloadSwiss RS 52 | <<locked>> | 92% | 56,144 psi | 88% | 2392 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 98% | 55,579 psi | 87% | 2418 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 48,327 psi | 76% | 2313 fps | 99.3% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 49,153 psi | 77% | 2336 fps | 99% |
| Rottweil R 901 | <<locked>> | 88% | 54,839 psi | 86% | 2238 fps | 100% |
| Rottweil R 902 | <<locked>> | 94% | 57,450 psi | 90% | 2290 fps | 100% |
| Rottweil R 903 | <<locked>> | 98% | 55,303 psi | 87% | 2320 fps | 100% |
| Rottweil R 907ᴾ | <<locked>> | 100% | 56,202 psi | 88% | 2303 fps | 97.9% |
| Shooters World Long Rifleᴾ | <<locked>> | 100% | 53,751 psi | 84% | 2283 fps | 99% |
| Shooters World Match Rifle | <<locked>> | 92% | 57,580 psi | 90% | 2316 fps | 100% |
| Shooters World Precision | <<locked>> | 94% | 54,810 psi | 86% | 2280 fps | 100% |
| Shooters World SW4350ᴾ | <<locked>> | 100% | 51,010 psi | 80% | 2267 fps | 97.9% |
| Shooters World Tactical Rifle | <<locked>> | 84% | 57,232 psi | 90% | 2264 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 82% | 56,608 psi | 89% | 2280 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 98% | 57,058 psi | 89% | 2372 fps | 100% |
| SNPE Vectan SP 3 | <<locked>> | 84% | 56,753 psi | 89% | 2231 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 90% | 56,275 psi | 88% | 2303 fps | 99.6% |
| SNPE Vectan SP 9 | <<locked>> | 92% | 56,637 psi | 89% | 2320 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 90% | 55,608 psi | 87% | 2201 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 96% | 55,317 psi | 87% | 2201 fps | 100% |
| SNPE Vectan Tubal 7000ᴾ | <<locked>> | 100% | 54,302 psi | 85% | 2244 fps | 98% |
| Somchem S321 | <<locked>> | 86% | 55,172 psi | 86% | 2290 fps | 100% |
| Somchem S335 | <<locked>> | 90% | 54,737 psi | 86% | 2205 fps | 100% |
| Somchem S341 | <<locked>> | 90% | 55,593 psi | 87% | 2293 fps | 100% |
| Somchem S355 | <<locked>> | 98% | 55,854 psi | 88% | 2320 fps | 100% |
| Somchem S365ᴾ | <<locked>> | 100% | 43,120 psi | 68% | 2247 fps | 100% |
| Unknown powderᴾ | <<locked>> | 100% | 52,997 psi | 83% | 2336 fps | 99.4% |
| Vihtavuori N130 | <<locked>> | 86% | 55,448 psi | 87% | 2172 fps | 100% |
| Vihtavuori N133 | <<locked>> | 90% | 55,608 psi | 87% | 2188 fps | 100% |
| Vihtavuori N135 | <<locked>> | 94% | 56,579 psi | 89% | 2254 fps | 100% |
| Vihtavuori N140 | <<locked>> | 92% | 54,346 psi | 85% | 2238 fps | 100% |
| Vihtavuori N150ᴾ | <<locked>> | 100% | 57,493 psi | 90% | 2297 fps | 100% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 50,937 psi | 80% | 2283 fps | 99.5% |
| Vihtavuori N530 | <<locked>> | 88% | 54,679 psi | 86% | 2260 fps | 100% |
| Vihtavuori N540 | <<locked>> | 94% | 55,970 psi | 88% | 2277 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 50,009 psi | 78% | 2293 fps | 99.3% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 36,071 psi | 57% | 2149 fps | 98% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 51,808 psi | 81% | 2270 fps | 100% |
| Winchester 748 | <<locked>> | 86% | 54,621 psi | 86% | 2310 fps | 100% |
| Winchester 760ᴾ | <<locked>> | 100% | 57,566 psi | 90% | 2402 fps | 98.7% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 30,226 psi | 47% | 2077 fps | 97.3% |
| Winchester StaBALL Match | <<locked>> | 84% | 54,491 psi | 85% | 2306 fps | 100% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 25.6"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2015 | <<locked>> | 80% | 43,859 psi | 69% | 2073 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 47,587 psi | 75% | 2162 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 36,303 psi | 57% | 2014 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 41,350 psi | 65% | 2123 fps | 100% |
| Accurate 2700 | <<locked>> | 90% | 45,136 psi | 71% | 2116 fps | 95.4% |
| Accurate 4064 | <<locked>> | 80% | 34,360 psi | 54% | 2011 fps | 100% |
| Accurate 4350 | <<locked>> | 86% | 30,110 psi | 47% | 1991 fps | 95.2% |
| Accurate LT-30 | <<locked>> | 80% | 52,141 psi | 82% | 2129 fps | 100% |
| Accurate LT-32 | <<locked>> | 80% | 52,547 psi | 82% | 2149 fps | 100% |
| ADI AR 2206H | <<locked>> | 80% | 40,132 psi | 63% | 2100 fps | 99% |
| ADI AR 2208 | <<locked>> | 80% | 34,229 psi | 54% | 1982 fps | 97% |
| ADI AR 2219 | <<locked>> | 80% | 52,533 psi | 82% | 2228 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 80% | 42,163 psi | 66% | 2103 fps | 99.8% |
| Alliant AR-Comp | <<locked>> | 80% | 41,626 psi | 65% | 2093 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 49,023 psi | 77% | 2260 fps | 100% |
| Alliant Power Pro 2000-MR | 65.1 gr | 80% | 36,158 psi | 57% | 2116 fps | 97.4% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 33,431 psi | 52% | 1998 fps | 98.4% |
| Alliant Reloder-10x | <<locked>> | 80% | 49,516 psi | 78% | 2146 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 36,027 psi | 56% | 2047 fps | 97.8% |
| Alliant Reloder-16 | <<locked>> | 86% | 31,560 psi | 49% | 2005 fps | 95.4% |
| Alliant Reloder-17 | <<locked>> | 80% | 28,863 psi | 45% | 1972 fps | 96.2% |
| Alliant Reloder-23 | <<locked>> | 94% | 28,529 psi | 45% | 1969 fps | 95.8% |
| Alliant Reloder-26 | <<locked>> | 98% | 34,795 psi | 55% | 2156 fps | 95.9% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 51,082 psi | 80% | 2133 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 39,059 psi | 61% | 2103 fps | 98% |
| Bofors RP3 | <<locked>> | 80% | 32,793 psi | 51% | 2001 fps | 98.4% |
| Bofors RP7 | <<locked>> | 92% | 43,961 psi | 69% | 2139 fps | 95.5% |
| Hodgdon Benchmark | <<locked>> | 80% | 44,222 psi | 69% | 2096 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 40,437 psi | 63% | 2123 fps | 99.9% |
| Hodgdon CFE223 | <<locked>> | 80% | 44,295 psi | 69% | 2231 fps | 99.3% |
| Hodgdon H322 | <<locked>> | 80% | 44,686 psi | 70% | 2133 fps | 100% |
| Hodgdon H335 | <<locked>> | 80% | 51,721 psi | 81% | 2234 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 33,924 psi | 53% | 2005 fps | 95.8% |
| Hodgdon H414 | <<locked>> | 90% | 41,162 psi | 65% | 2178 fps | 95.6% |
| Hodgdon H4198 | <<locked>> | 80% | 53,896 psi | 84% | 2162 fps | 100% |
| Hodgdon H4350 | <<locked>> | 96% | 45,716 psi | 72% | 2198 fps | 95.2% |
| Hodgdon H4895 | <<locked>> | 80% | 40,480 psi | 63% | 2110 fps | 99.4% |
| Hodgdon Hybrid 100V | <<locked>> | 84% | 27,035 psi | 42% | 1880 fps | 95.4% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 34,360 psi | 54% | 2047 fps | 98.7% |
| Hodgdon Superformance | <<locked>> | 94% | 43,149 psi | 68% | 2221 fps | 95.3% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,049 psi | 41% | 1201 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 36,071 psi | 57% | 2021 fps | 98.6% |
| IMR 3031 | <<locked>> | 80% | 36,347 psi | 57% | 2051 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 33,518 psi | 53% | 1962 fps | 97.1% |
| IMR 4166 Enduron | <<locked>> | 86% | 40,393 psi | 63% | 2054 fps | 95.1% |
| IMR 4198 | <<locked>> | 80% | 49,908 psi | 78% | 2110 fps | 100% |
| IMR 4350 | <<locked>> | 96% | 43,743 psi | 69% | 2159 fps | 95.5% |
| IMR 4451 Enduron | <<locked>> | 88% | 40,495 psi | 63% | 2083 fps | 95% |
| IMR 4831 | <<locked>> | 90% | 30,400 psi | 48% | 1978 fps | 95.3% |
| IMR 4895 | <<locked>> | 80% | 36,869 psi | 58% | 2073 fps | 98.5% |
| IMR 8208 XBR | <<locked>> | 80% | 42,163 psi | 66% | 2103 fps | 99.8% |
| Lovex D073.4 | <<locked>> | 80% | 49,487 psi | 78% | 2185 fps | 100% |
| Lovex D073.5 | <<locked>> | 80% | 47,355 psi | 74% | 2169 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 38,740 psi | 61% | 2083 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 40,828 psi | 64% | 2051 fps | 99% |
| Lovex S062 | <<locked>> | 80% | 35,737 psi | 56% | 2014 fps | 99.1% |
| Lovex S065 | <<locked>> | 86% | 35,186 psi | 55% | 2005 fps | 95.2% |
| Lovex S070 | <<locked>> | 92% | 39,784 psi | 62% | 2103 fps | 95.4% |
| Norma 201 | <<locked>> | 80% | 39,421 psi | 62% | 2060 fps | 99.6% |
| Norma 202 | <<locked>> | 80% | 39,494 psi | 62% | 2070 fps | 100% |
| Norma 203B | <<locked>> | 80% | 35,418 psi | 56% | 2041 fps | 98.1% |
| Norma URP | <<locked>> | 86% | 31,140 psi | 49% | 1995 fps | 95.2% |
| Ramshot Big Game | <<locked>> | 80% | 34,766 psi | 54% | 2047 fps | 97.8% |
| Ramshot Hunter | <<locked>> | 92% | 36,970 psi | 58% | 2110 fps | 95.2% |
| Ramshot TAC | <<locked>> | 80% | 42,003 psi | 66% | 2110 fps | 97.3% |
| Ramshot Wild Boar | <<locked>> | 80% | 41,234 psi | 65% | 2126 fps | 99.1% |
| Ramshot X-Terminator | <<locked>> | 80% | 45,687 psi | 72% | 2146 fps | 99.5% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,310 psi | 41% | 1230 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 47,297 psi | 74% | 2169 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 84% | 39,233 psi | 61% | 2073 fps | 95.6% |
| ReloadSwiss RS 52 | 63.1 gr | 80% | 37,217 psi | 58% | 2126 fps | 98.1% |
| ReloadSwiss RS 60 | 64.1 gr | 80% | 30,748 psi | 48% | 2024 fps | 99.2% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 32,416 psi | 51% | 2051 fps | 95.5% |
| ReloadSwiss RS 70 | <<locked>> | 90% | 35,389 psi | 55% | 2100 fps | 95.5% |
| Rottweil R 901 | <<locked>> | 80% | 43,337 psi | 68% | 2093 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 37,478 psi | 59% | 2024 fps | 99.3% |
| Rottweil R 903 | <<locked>> | 80% | 30,951 psi | 49% | 1959 fps | 97.6% |
| Rottweil R 907 | <<locked>> | 92% | 43,961 psi | 69% | 2139 fps | 95.5% |
| Shooters World Long Rifle | <<locked>> | 86% | 35,186 psi | 55% | 2005 fps | 95.2% |
| Shooters World Match Rifle | <<locked>> | 80% | 38,740 psi | 61% | 2083 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 35,737 psi | 56% | 2014 fps | 99.1% |
| Shooters World SW4350 | <<locked>> | 92% | 39,784 psi | 62% | 2103 fps | 95.4% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 49,966 psi | 78% | 2182 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 52,881 psi | 83% | 2241 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 31,937 psi | 50% | 1998 fps | 97% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 50,198 psi | 79% | 2159 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 40,103 psi | 63% | 2087 fps | 97.4% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 38,653 psi | 61% | 2073 fps | 98.7% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 41,017 psi | 64% | 2024 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 33,852 psi | 53% | 1923 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 92% | 41,669 psi | 65% | 2080 fps | 95.6% |
| Somchem S321 | <<locked>> | 80% | 45,324 psi | 71% | 2169 fps | 100% |
| Somchem S335 | <<locked>> | 80% | 40,553 psi | 64% | 2028 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 39,813 psi | 62% | 2087 fps | 98.9% |
| Somchem S355 | <<locked>> | 80% | 31,952 psi | 50% | 1965 fps | 97.6% |
| Somchem S365 | <<locked>> | 82% | 24,584 psi | 39% | 1870 fps | 95.8% |
| Unknown powder | <<locked>> | 86% | 34,026 psi | 53% | 2041 fps | 95.5% |
| Vihtavuori N130 | <<locked>> | 80% | 46,470 psi | 73% | 2070 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 41,191 psi | 65% | 2018 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 36,637 psi | 57% | 2011 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 37,449 psi | 59% | 2021 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 30,342 psi | 48% | 1916 fps | 98.4% |
| Vihtavuori N160 | <<locked>> | 86% | 32,605 psi | 51% | 1995 fps | 95.7% |
| Vihtavuori N530 | <<locked>> | 80% | 42,177 psi | 66% | 2103 fps | 99.8% |
| Vihtavuori N540 | <<locked>> | 80% | 35,969 psi | 56% | 2014 fps | 100% |
| Vihtavuori N550 | <<locked>> | 86% | 31,792 psi | 50% | 1998 fps | 95.3% |
| Vihtavuori N555 | <<locked>> | 92% | 28,166 psi | 44% | 1982 fps | 95% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 27,151 psi | 43% | 1854 fps | 95.4% |
| Winchester 748 | <<locked>> | 80% | 44,527 psi | 70% | 2185 fps | 100% |
| Winchester 760 | <<locked>> | 90% | 41,162 psi | 65% | 2178 fps | 95.6% |
| Winchester StaBALL HD | <<locked>> | 98% | 28,427 psi | 45% | 2024 fps | 96.2% |
| Winchester StaBALL Match | <<locked>> | 80% | 47,239 psi | 74% | 2218 fps | 99.9% |
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 112 powders for 10.3 x 68 Mag. loaded with the .416 | 400gr | A-Square LionLoad. Alliant Reloder-17 delivers the highest muzzle velocity at 2,418 fps; across all powders the maximum-charge window runs from 1,342 fps to 2,418 fps. Accurate 4350 gives the best case fill at 100 %, and 112 of the 112 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (440 MPa), the top charges use 47–90 %, leaving at least 10 % headroom. Accurate 4350, Alliant Reloder-16, Alliant Reloder-17 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 60, ReloadSwiss RS 52 rank at the top here: for 10.3 x 68 Mag. with the .416 | 400gr | A-Square LionLoad 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.