Load Specifications
Bullet:.338 | 300gr | Lapua Scenar
Bullet Manufacturer:Lapua
Bullet Weight:300 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:1:11.5
Load data in caliber .338-06 A-Square with .338 | 300gr | Lapua Scenar bullet and 107 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>> | 88% | 53,635 psi | 85% | 2005 fps | 100% |
| Accurate 2460 | <<locked>> | 86% | 55,637 psi | 88% | 2067 fps | 100% |
| Accurate 2495 | <<locked>> | 94% | 54,186 psi | 86% | 2057 fps | 100% |
| Accurate 2520 | <<locked>> | 90% | 56,913 psi | 90% | 2113 fps | 100% |
| Accurate 2700 | <<locked>> | 94% | 55,172 psi | 87% | 2064 fps | 97.2% |
| Accurate 4064 | <<locked>> | 96% | 53,867 psi | 85% | 2093 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 45,730 psi | 72% | 2077 fps | 99% |
| Accurate LT-30 | <<locked>> | 84% | 57,014 psi | 90% | 1995 fps | 100% |
| Accurate LT-32 | <<locked>> | 82% | 54,012 psi | 86% | 1982 fps | 100% |
| ADI AR 2206H | <<locked>> | 92% | 56,130 psi | 89% | 2126 fps | 100% |
| ADI AR 2208 | <<locked>> | 98% | 56,507 psi | 90% | 2119 fps | 99.9% |
| ADI AR 2219 | <<locked>> | 82% | 54,157 psi | 86% | 2060 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 90% | 55,492 psi | 88% | 2090 fps | 100% |
| Alliant AR-Comp | <<locked>> | 90% | 55,056 psi | 87% | 2060 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 84% | 53,708 psi | 85% | 2129 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 94% | 55,187 psi | 87% | 2218 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 98% | 55,825 psi | 88% | 2136 fps | 100% |
| Alliant Reloder-10x | <<locked>> | 84% | 53,679 psi | 85% | 2008 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 96% | 56,739 psi | 90% | 2152 fps | 100% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 46,006 psi | 73% | 2083 fps | 99.2% |
| Alliant Reloder-17ᴾ | <<locked>> | 100% | 52,620 psi | 83% | 2192 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 32,445 psi | 51% | 1893 fps | 97.4% |
| Baschieri & Pellagri 106 | <<locked>> | 84% | 55,767 psi | 88% | 2001 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 92% | 55,550 psi | 88% | 2142 fps | 99.8% |
| Bofors RP3 | <<locked>> | 98% | 56,289 psi | 89% | 2149 fps | 100% |
| Bofors RP7ᴾ | <<locked>> | 100% | 53,780 psi | 85% | 2087 fps | 97.4% |
| Hodgdon Benchmark | <<locked>> | 88% | 54,375 psi | 86% | 2041 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 90% | 53,969 psi | 86% | 2116 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 88% | 55,782 psi | 88% | 2188 fps | 100% |
| Hodgdon H322 | <<locked>> | 86% | 56,115 psi | 89% | 2080 fps | 100% |
| Hodgdon H335 | <<locked>> | 84% | 53,417 psi | 85% | 2067 fps | 100% |
| Hodgdon H380 | <<locked>> | 96% | 54,476 psi | 86% | 2126 fps | 99.5% |
| Hodgdon H414ᴾ | <<locked>> | 100% | 49,501 psi | 78% | 2116 fps | 97.4% |
| Hodgdon H4350ᴾ | <<locked>> | 100% | 54,346 psi | 86% | 2126 fps | 96.8% |
| Hodgdon H4895 | <<locked>> | 92% | 56,637 psi | 90% | 2133 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 42,148 psi | 67% | 1995 fps | 99.5% |
| Hodgdon LEVERevolution | <<locked>> | 94% | 54,824 psi | 87% | 2159 fps | 100% |
| Hodgdon Superformanceᴾ | <<locked>> | 100% | 50,633 psi | 80% | 2142 fps | 96.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,954 psi | 55% | 1214 fps | 100% |
| Hodgdon VARGET | <<locked>> | 92% | 54,346 psi | 86% | 2096 fps | 100% |
| IMR 3031 | <<locked>> | 92% | 55,941 psi | 89% | 2113 fps | 100% |
| IMR 4064 | <<locked>> | 96% | 56,391 psi | 89% | 2106 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 92% | 53,940 psi | 85% | 2060 fps | 97.9% |
| IMR 4198 | <<locked>> | 84% | 54,389 psi | 86% | 1975 fps | 100% |
| IMR 4350ᴾ | <<locked>> | 100% | 47,152 psi | 75% | 2031 fps | 96.1% |
| IMR 4451 Enduronᴾ | <<locked>> | 100% | 55,869 psi | 89% | 2113 fps | 98.1% |
| IMR 4831ᴾ | <<locked>> | 100% | 43,758 psi | 69% | 2034 fps | 98.8% |
| IMR 4895 | <<locked>> | 94% | 54,665 psi | 87% | 2139 fps | 100% |
| IMR 8208 XBR | <<locked>> | 90% | 55,492 psi | 88% | 2090 fps | 100% |
| Lovex D073.5 | <<locked>> | 86% | 55,637 psi | 88% | 2080 fps | 100% |
| Lovex D073.6 | <<locked>> | 92% | 54,998 psi | 87% | 2103 fps | 100% |
| Lovex S060 | <<locked>> | 92% | 56,101 psi | 89% | 2067 fps | 100% |
| Lovex S062 | <<locked>> | 96% | 55,782 psi | 88% | 2103 fps | 100% |
| Lovex S065ᴾ | <<locked>> | 100% | 51,445 psi | 82% | 2070 fps | 98.7% |
| Lovex S070ᴾ | <<locked>> | 100% | 48,457 psi | 77% | 2054 fps | 97.3% |
| Norma 201 | <<locked>> | 92% | 54,853 psi | 87% | 2083 fps | 100% |
| Norma 202 | <<locked>> | 92% | 55,114 psi | 87% | 2083 fps | 100% |
| Norma 203B | <<locked>> | 96% | 55,811 psi | 88% | 2142 fps | 100% |
| Norma URPᴾ | <<locked>> | 100% | 45,803 psi | 73% | 2070 fps | 99% |
| Ramshot Big Game | <<locked>> | 96% | 56,217 psi | 89% | 2169 fps | 100% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 45,266 psi | 72% | 2067 fps | 97.3% |
| Ramshot TAC | <<locked>> | 90% | 55,666 psi | 88% | 2110 fps | 99.2% |
| Ramshot Wild Boar | <<locked>> | 90% | 54,766 psi | 87% | 2119 fps | 100% |
| Ramshot X-Terminator | <<locked>> | 88% | 56,550 psi | 90% | 2093 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,346 psi | 56% | 1243 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 86% | 55,056 psi | 87% | 2073 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 96% | 55,158 psi | 87% | 2113 fps | 98.6% |
| ReloadSwiss RS 52 | <<locked>> | 94% | 56,942 psi | 90% | 2208 fps | 100% |
| ReloadSwiss RS 60ᴾ | <<locked>> | 100% | 56,275 psi | 89% | 2231 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 45,585 psi | 72% | 2096 fps | 98.8% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 46,543 psi | 74% | 2110 fps | 98.4% |
| Rottweil R 901 | <<locked>> | 90% | 55,782 psi | 88% | 2060 fps | 100% |
| Rottweil R 902 | <<locked>> | 94% | 54,882 psi | 87% | 2077 fps | 100% |
| Rottweil R 903ᴾ | <<locked>> | 100% | 55,782 psi | 88% | 2136 fps | 100% |
| Rottweil R 907ᴾ | <<locked>> | 100% | 53,780 psi | 85% | 2087 fps | 97.4% |
| Shooters World Long Rifleᴾ | <<locked>> | 100% | 51,445 psi | 82% | 2070 fps | 98.7% |
| Shooters World Match Rifle | <<locked>> | 92% | 54,998 psi | 87% | 2103 fps | 100% |
| Shooters World Precision | <<locked>> | 96% | 55,782 psi | 88% | 2103 fps | 100% |
| Shooters World SW4350ᴾ | <<locked>> | 100% | 48,457 psi | 77% | 2054 fps | 97.3% |
| Shooters World Tactical Rifle | <<locked>> | 84% | 54,940 psi | 87% | 2054 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 82% | 54,346 psi | 86% | 2070 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 98% | 54,389 psi | 86% | 2156 fps | 100% |
| SNPE Vectan SP 3 | <<locked>> | 84% | 54,708 psi | 87% | 2021 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 90% | 53,795 psi | 85% | 2090 fps | 99.4% |
| SNPE Vectan SP 9 | <<locked>> | 92% | 54,273 psi | 86% | 2106 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 92% | 56,942 psi | 90% | 2031 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 98% | 56,550 psi | 90% | 2031 fps | 100% |
| SNPE Vectan Tubal 7000ᴾ | <<locked>> | 100% | 51,517 psi | 82% | 2031 fps | 97.5% |
| Somchem S321 | <<locked>> | 88% | 56,695 psi | 90% | 2119 fps | 100% |
| Somchem S335 | <<locked>> | 92% | 56,028 psi | 89% | 2034 fps | 100% |
| Somchem S341 | <<locked>> | 92% | 56,884 psi | 90% | 2123 fps | 100% |
| Somchem S355ᴾ | <<locked>> | 100% | 56,724 psi | 90% | 2139 fps | 100% |
| Somchem S365ᴾ | <<locked>> | 100% | 40,944 psi | 65% | 2037 fps | 100% |
| Vihtavuori N130 | <<locked>> | 88% | 56,855 psi | 90% | 2001 fps | 100% |
| Vihtavuori N133 | <<locked>> | 92% | 56,826 psi | 90% | 2018 fps | 100% |
| Vihtavuori N135 | <<locked>> | 94% | 54,331 psi | 86% | 2047 fps | 100% |
| Vihtavuori N140 | <<locked>> | 94% | 55,535 psi | 88% | 2067 fps | 100% |
| Vihtavuori N150ᴾ | <<locked>> | 100% | 54,505 psi | 86% | 2083 fps | 100% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 48,327 psi | 77% | 2067 fps | 99.1% |
| Vihtavuori N530 | <<locked>> | 90% | 55,970 psi | 89% | 2087 fps | 100% |
| Vihtavuori N540 | <<locked>> | 96% | 57,072 psi | 90% | 2103 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 47,297 psi | 75% | 2077 fps | 98.9% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 34,214 psi | 54% | 1946 fps | 97.3% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 49,255 psi | 78% | 2060 fps | 100% |
| Winchester 748 | <<locked>> | 90% | 54,897 psi | 87% | 2123 fps | 100% |
| Winchester 760ᴾ | <<locked>> | 100% | 49,501 psi | 78% | 2116 fps | 97.4% |
| Winchester StaBALL Match | <<locked>> | 92% | 53,853 psi | 85% | 2113 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% | 42,148 psi | 67% | 1877 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 45,745 psi | 73% | 1962 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 34,635 psi | 55% | 1824 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 40,785 psi | 65% | 1932 fps | 100% |
| Accurate 2700 | <<locked>> | 88% | 45,498 psi | 72% | 1949 fps | 95.3% |
| Accurate 4064 | <<locked>> | 80% | 32,793 psi | 52% | 1821 fps | 99.9% |
| Accurate 4350 | <<locked>> | 88% | 30,545 psi | 48% | 1841 fps | 95.4% |
| Accurate LT-30 | <<locked>> | 80% | 50,676 psi | 80% | 1932 fps | 100% |
| Accurate LT-32 | <<locked>> | 80% | 51,082 psi | 81% | 1949 fps | 100% |
| ADI AR 2206H | <<locked>> | 80% | 38,754 psi | 61% | 1903 fps | 98.7% |
| ADI AR 2208 | <<locked>> | 80% | 32,938 psi | 52% | 1791 fps | 96.6% |
| ADI AR 2219 | <<locked>> | 80% | 50,401 psi | 80% | 2021 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 80% | 40,727 psi | 65% | 1909 fps | 99.7% |
| Alliant AR-Comp | <<locked>> | 80% | 39,827 psi | 63% | 1896 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 47,181 psi | 75% | 2051 fps | 99.9% |
| Alliant Power Pro 2000-MR | 38.1 gr | 80% | 34,693 psi | 55% | 1916 fps | 96.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 32,039 psi | 51% | 1811 fps | 98.1% |
| Alliant Reloder-10x | <<locked>> | 80% | 47,906 psi | 76% | 1946 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 34,635 psi | 55% | 1854 fps | 97.4% |
| Alliant Reloder-16 | <<locked>> | 88% | 32,111 psi | 51% | 1847 fps | 95.5% |
| Alliant Reloder-17 | <<locked>> | 80% | 27,630 psi | 44% | 1778 fps | 95.5% |
| Alliant Reloder-23 | <<locked>> | 96% | 28,819 psi | 46% | 1814 fps | 95.8% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 49,298 psi | 78% | 1936 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 37,405 psi | 59% | 1903 fps | 97.5% |
| Bofors RP3 | <<locked>> | 80% | 31,372 psi | 50% | 1811 fps | 98% |
| Bofors RP7 | <<locked>> | 94% | 44,904 psi | 71% | 1975 fps | 95.6% |
| Hodgdon Benchmark | <<locked>> | 80% | 42,656 psi | 68% | 1900 fps | 99.9% |
| Hodgdon BL-C2 | <<locked>> | 80% | 38,653 psi | 61% | 1923 fps | 99.7% |
| Hodgdon CFE223 | <<locked>> | 80% | 42,424 psi | 67% | 2021 fps | 99% |
| Hodgdon H322 | <<locked>> | 80% | 46,238 psi | 73% | 1972 fps | 100% |
| Hodgdon H335 | <<locked>> | 80% | 46,818 psi | 74% | 1995 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 32,532 psi | 52% | 1814 fps | 95.3% |
| Hodgdon H414 | <<locked>> | 94% | 40,741 psi | 65% | 1995 fps | 95.4% |
| Hodgdon H4350 | <<locked>> | 96% | 48,008 psi | 76% | 2051 fps | 95.6% |
| Hodgdon H4895 | <<locked>> | 80% | 39,001 psi | 62% | 1909 fps | 99.1% |
| Hodgdon Hybrid 100V | <<locked>> | 86% | 27,514 psi | 44% | 1736 fps | 95.6% |
| Hodgdon LEVERevolution | 37.4 gr | 80% | 34,853 psi | 55% | 1890 fps | 98.8% |
| Hodgdon Superformance | <<locked>> | 96% | 43,990 psi | 70% | 2054 fps | 95.2% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,049 psi | 41% | 1083 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 37,608 psi | 60% | 1877 fps | 98.8% |
| IMR 3031 | <<locked>> | 80% | 38,101 psi | 60% | 1906 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 34,519 psi | 55% | 1814 fps | 97.3% |
| IMR 4166 Enduron | <<locked>> | 84% | 41,945 psi | 66% | 1906 fps | 95.4% |
| IMR 4198 | <<locked>> | 80% | 48,457 psi | 77% | 1913 fps | 100% |
| IMR 4350 | <<locked>> | 98% | 44,338 psi | 70% | 1991 fps | 95.4% |
| IMR 4451 Enduron | <<locked>> | 90% | 41,510 psi | 66% | 1929 fps | 95.2% |
| IMR 4831 | <<locked>> | 88% | 30,066 psi | 48% | 1808 fps | 95.1% |
| IMR 4895 | <<locked>> | 80% | 35,418 psi | 56% | 1877 fps | 98.2% |
| IMR 8208 XBR | <<locked>> | 80% | 40,727 psi | 65% | 1909 fps | 99.7% |
| Lovex D073.5 | <<locked>> | 80% | 45,411 psi | 72% | 1969 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 37,086 psi | 59% | 1886 fps | 99.9% |
| Lovex S060 | <<locked>> | 80% | 39,407 psi | 62% | 1857 fps | 98.8% |
| Lovex S062 | <<locked>> | 80% | 34,287 psi | 54% | 1821 fps | 98.8% |
| Lovex S065 | <<locked>> | 88% | 35,810 psi | 57% | 1850 fps | 95.3% |
| Lovex S070 | <<locked>> | 94% | 40,509 psi | 64% | 1942 fps | 95.5% |
| Norma 201 | <<locked>> | 80% | 37,942 psi | 60% | 1867 fps | 99.4% |
| Norma 202 | <<locked>> | 80% | 38,014 psi | 60% | 1877 fps | 100% |
| Norma 203B | <<locked>> | 80% | 34,026 psi | 54% | 1847 fps | 97.8% |
| Norma URP | <<locked>> | 88% | 31,618 psi | 50% | 1841 fps | 95.4% |
| Ramshot Big Game | <<locked>> | 80% | 33,286 psi | 53% | 1854 fps | 97.3% |
| Ramshot Hunter | <<locked>> | 94% | 37,521 psi | 59% | 1949 fps | 95.2% |
| Ramshot TAC | <<locked>> | 80% | 40,466 psi | 64% | 1913 fps | 96.8% |
| Ramshot Wild Boar | <<locked>> | 80% | 39,436 psi | 63% | 1923 fps | 98.8% |
| Ramshot X-Terminator | <<locked>> | 80% | 43,947 psi | 70% | 1942 fps | 99.3% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,208 psi | 42% | 1106 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 45,672 psi | 72% | 1965 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 84% | 37,608 psi | 60% | 1877 fps | 95% |
| ReloadSwiss RS 52 | 36.9 gr | 80% | 35,476 psi | 56% | 1919 fps | 97.7% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 29,428 psi | 47% | 1827 fps | 98.8% |
| ReloadSwiss RS 62 | <<locked>> | 90% | 32,866 psi | 52% | 1893 fps | 95.6% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 35,911 psi | 57% | 1939 fps | 95.4% |
| Rottweil R 901 | <<locked>> | 80% | 41,843 psi | 66% | 1896 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 36,172 psi | 57% | 1834 fps | 99.1% |
| Rottweil R 903 | <<locked>> | 80% | 29,501 psi | 47% | 1772 fps | 97.1% |
| Rottweil R 907 | <<locked>> | 94% | 44,904 psi | 71% | 1975 fps | 95.6% |
| Shooters World Long Rifle | <<locked>> | 88% | 35,810 psi | 57% | 1850 fps | 95.3% |
| Shooters World Match Rifle | <<locked>> | 80% | 37,086 psi | 59% | 1886 fps | 99.9% |
| Shooters World Precision | <<locked>> | 80% | 34,287 psi | 54% | 1821 fps | 98.8% |
| Shooters World SW4350 | <<locked>> | 94% | 40,509 psi | 64% | 1942 fps | 95.5% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 48,095 psi | 76% | 1978 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 50,792 psi | 81% | 2031 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 30,560 psi | 48% | 1804 fps | 96.4% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 48,356 psi | 77% | 1955 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 38,435 psi | 61% | 1890 fps | 96.9% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 37,043 psi | 59% | 1877 fps | 98.3% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 39,581 psi | 63% | 1834 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 32,503 psi | 52% | 1739 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 94% | 42,177 psi | 67% | 1919 fps | 95.6% |
| Somchem S321 | <<locked>> | 80% | 43,410 psi | 69% | 1965 fps | 99.9% |
| Somchem S335 | <<locked>> | 80% | 39,102 psi | 62% | 1837 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 38,101 psi | 60% | 1890 fps | 98.5% |
| Somchem S355 | <<locked>> | 80% | 30,618 psi | 49% | 1778 fps | 97.2% |
| Somchem S365 | <<locked>> | 82% | 23,612 psi | 37% | 1690 fps | 95.1% |
| Vihtavuori N130 | <<locked>> | 80% | 44,846 psi | 71% | 1877 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 39,697 psi | 63% | 1831 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 35,027 psi | 56% | 1821 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 35,940 psi | 57% | 1831 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 29,008 psi | 46% | 1732 fps | 98% |
| Vihtavuori N160 | <<locked>> | 86% | 31,299 psi | 50% | 1804 fps | 95% |
| Vihtavuori N530 | <<locked>> | 80% | 40,640 psi | 64% | 1906 fps | 99.7% |
| Vihtavuori N540 | <<locked>> | 80% | 34,548 psi | 55% | 1827 fps | 99.9% |
| Vihtavuori N550 | <<locked>> | 88% | 32,314 psi | 51% | 1847 fps | 95.4% |
| Vihtavuori N555 | <<locked>> | 94% | 28,384 psi | 45% | 1827 fps | 95% |
| Winchester 6.5 StaBALL | <<locked>> | 82% | 27,847 psi | 44% | 1716 fps | 95.7% |
| Winchester 748 | <<locked>> | 80% | 39,624 psi | 63% | 1939 fps | 99.9% |
| Winchester 760 | <<locked>> | 94% | 41,031 psi | 65% | 1998 fps | 95.4% |
| Winchester StaBALL Match | <<locked>> | 80% | 36,187 psi | 57% | 1880 fps | 98.7% |
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 107 powders for .338-06 A-Square loaded with the .338 | 300gr | Lapua Scenar. ReloadSwiss RS 60 delivers the highest muzzle velocity at 2,231 fps; across all powders the maximum-charge window runs from 1,214 fps to 2,231 fps. Accurate 4350 gives the best case fill at 100 %, and 107 of the 107 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (435 MPa), the top charges use 51–90 %, leaving at least 10 % headroom. The 300.0 gr projectile in 0.338" calls for a 1:11.5 twist; slower twists will usually not stabilise this weight. 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 52, Hodgdon LEVERevolution rank at the top here: for .338-06 A-Square with the .338 | 300gr | Lapua Scenar they combine a high case fill with complete burn and sit in the upper velocity band. Hodgdon TrailBoss, ReloadSwiss RS 14 stay subsonic at start load. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.