Load Specifications
Bullet Manufacturer:Nosler
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:1:12.0
Load data in caliber .338-06 A-Square with .338 | 300gr | Nosler Custom Competition 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% | 56,797 psi | 90% | 2034 fps | 100% |
| Accurate 2460 | <<locked>> | 86% | 55,332 psi | 88% | 2064 fps | 100% |
| Accurate 2495 | <<locked>> | 94% | 54,215 psi | 86% | 2057 fps | 100% |
| Accurate 2520 | <<locked>> | 90% | 57,000 psi | 90% | 2113 fps | 100% |
| Accurate 2700 | <<locked>> | 94% | 54,911 psi | 87% | 2060 fps | 97.2% |
| Accurate 4064 | <<locked>> | 96% | 53,577 psi | 85% | 2090 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 45,440 psi | 72% | 2070 fps | 99% |
| Accurate LT-30 | <<locked>> | 84% | 56,710 psi | 90% | 1991 fps | 100% |
| Accurate LT-32 | <<locked>> | 82% | 54,027 psi | 86% | 1978 fps | 100% |
| ADI AR 2206H | <<locked>> | 92% | 55,825 psi | 88% | 2123 fps | 100% |
| ADI AR 2208 | <<locked>> | 98% | 56,623 psi | 90% | 2116 fps | 99.9% |
| ADI AR 2219 | <<locked>> | 82% | 53,824 psi | 85% | 2054 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 90% | 55,143 psi | 87% | 2083 fps | 100% |
| Alliant AR-Comp | <<locked>> | 90% | 55,085 psi | 87% | 2057 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 86% | 56,884 psi | 90% | 2162 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 94% | 54,969 psi | 87% | 2211 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 98% | 55,521 psi | 88% | 2129 fps | 100% |
| Alliant Reloder-10x | <<locked>> | 86% | 56,811 psi | 90% | 2037 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 96% | 56,855 psi | 90% | 2152 fps | 100% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 45,788 psi | 73% | 2080 fps | 99.2% |
| Alliant Reloder-17ᴾ | <<locked>> | 100% | 52,402 psi | 83% | 2188 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 32,271 psi | 51% | 1886 fps | 97.3% |
| Baschieri & Pellagri 106 | <<locked>> | 84% | 55,869 psi | 89% | 2001 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 92% | 55,274 psi | 88% | 2136 fps | 99.8% |
| Bofors RP3 | <<locked>> | 98% | 55,985 psi | 89% | 2142 fps | 100% |
| Bofors RP7ᴾ | <<locked>> | 100% | 53,519 psi | 85% | 2080 fps | 97.3% |
| Hodgdon Benchmark | <<locked>> | 88% | 54,085 psi | 86% | 2034 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 90% | 53,664 psi | 85% | 2110 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 88% | 55,448 psi | 88% | 2185 fps | 100% |
| Hodgdon H322 | <<locked>> | 86% | 56,159 psi | 89% | 2077 fps | 100% |
| Hodgdon H335 | <<locked>> | 86% | 56,869 psi | 90% | 2100 fps | 100% |
| Hodgdon H380 | <<locked>> | 96% | 54,186 psi | 86% | 2119 fps | 99.5% |
| Hodgdon H414ᴾ | <<locked>> | 100% | 49,269 psi | 78% | 2113 fps | 97.3% |
| Hodgdon H4350ᴾ | <<locked>> | 100% | 54,099 psi | 86% | 2123 fps | 96.8% |
| Hodgdon H4895 | <<locked>> | 92% | 56,304 psi | 89% | 2129 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 41,887 psi | 66% | 1988 fps | 99.5% |
| Hodgdon LEVERevolution | <<locked>> | 94% | 54,520 psi | 86% | 2152 fps | 100% |
| Hodgdon Superformanceᴾ | <<locked>> | 100% | 50,415 psi | 80% | 2139 fps | 96.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,838 psi | 55% | 1211 fps | 100% |
| Hodgdon VARGET | <<locked>> | 92% | 54,085 psi | 86% | 2090 fps | 100% |
| IMR 3031 | <<locked>> | 92% | 55,608 psi | 88% | 2106 fps | 100% |
| IMR 4064 | <<locked>> | 96% | 56,101 psi | 89% | 2103 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 94% | 57,072 psi | 90% | 2093 fps | 98.3% |
| IMR 4198 | <<locked>> | 84% | 53,954 psi | 86% | 1969 fps | 100% |
| IMR 4350ᴾ | <<locked>> | 100% | 46,934 psi | 74% | 2024 fps | 96% |
| IMR 4451 Enduronᴾ | <<locked>> | 100% | 55,680 psi | 88% | 2106 fps | 98% |
| IMR 4831ᴾ | <<locked>> | 100% | 43,497 psi | 69% | 2028 fps | 98.7% |
| IMR 4895 | <<locked>> | 94% | 54,766 psi | 87% | 2139 fps | 100% |
| IMR 8208 XBR | <<locked>> | 90% | 55,143 psi | 87% | 2083 fps | 100% |
| Lovex D073.5 | <<locked>> | 86% | 55,317 psi | 88% | 2073 fps | 100% |
| Lovex D073.6 | <<locked>> | 92% | 54,650 psi | 87% | 2100 fps | 100% |
| Lovex S060 | <<locked>> | 92% | 56,159 psi | 89% | 2064 fps | 100% |
| Lovex S062 | <<locked>> | 96% | 55,492 psi | 88% | 2100 fps | 100% |
| Lovex S065ᴾ | <<locked>> | 100% | 51,184 psi | 81% | 2064 fps | 98.6% |
| Lovex S070ᴾ | <<locked>> | 100% | 48,196 psi | 76% | 2047 fps | 97.2% |
| Norma 200 | <<locked>> | 82% | 56,753 psi | 90% | 2014 fps | 100% |
| Norma 201 | <<locked>> | 92% | 54,578 psi | 87% | 2077 fps | 100% |
| Norma 202 | <<locked>> | 92% | 54,839 psi | 87% | 2077 fps | 100% |
| Norma 203B | <<locked>> | 96% | 55,941 psi | 89% | 2142 fps | 100% |
| Norma URPᴾ | <<locked>> | 100% | 45,542 psi | 72% | 2067 fps | 98.9% |
| Ramshot Big Game | <<locked>> | 96% | 55,941 psi | 89% | 2162 fps | 100% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 45,063 psi | 71% | 2064 fps | 97.2% |
| Ramshot TAC | <<locked>> | 90% | 55,477 psi | 88% | 2103 fps | 99.2% |
| Ramshot Wild Boar | <<locked>> | 90% | 54,476 psi | 86% | 2116 fps | 100% |
| Ramshot X-Terminator | <<locked>> | 88% | 56,289 psi | 89% | 2087 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,215 psi | 56% | 1240 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 86% | 54,723 psi | 87% | 2067 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 96% | 54,897 psi | 87% | 2106 fps | 98.5% |
| ReloadSwiss RS 52 | <<locked>> | 94% | 56,594 psi | 90% | 2201 fps | 100% |
| ReloadSwiss RS 60ᴾ | <<locked>> | 100% | 56,043 psi | 89% | 2228 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 45,368 psi | 72% | 2090 fps | 98.7% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 46,369 psi | 73% | 2106 fps | 98.3% |
| Rottweil R 901 | <<locked>> | 90% | 55,782 psi | 88% | 2060 fps | 100% |
| Rottweil R 902 | <<locked>> | 94% | 54,998 psi | 87% | 2073 fps | 100% |
| Rottweil R 903ᴾ | <<locked>> | 100% | 55,477 psi | 88% | 2133 fps | 100% |
| Rottweil R 907ᴾ | <<locked>> | 100% | 53,519 psi | 85% | 2080 fps | 97.3% |
| Shooters World Long Rifleᴾ | <<locked>> | 100% | 51,184 psi | 81% | 2064 fps | 98.6% |
| Shooters World Match Rifle | <<locked>> | 92% | 54,650 psi | 87% | 2100 fps | 100% |
| Shooters World Precision | <<locked>> | 96% | 55,492 psi | 88% | 2100 fps | 100% |
| Shooters World SW4350ᴾ | <<locked>> | 100% | 48,196 psi | 76% | 2047 fps | 97.2% |
| Shooters World Tactical Rifle | <<locked>> | 84% | 54,592 psi | 87% | 2047 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 82% | 54,027 psi | 86% | 2064 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 98% | 54,114 psi | 86% | 2149 fps | 100% |
| SNPE Vectan SP 3 | <<locked>> | 84% | 54,694 psi | 87% | 2021 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 90% | 53,505 psi | 85% | 2083 fps | 99.3% |
| SNPE Vectan SP 9 | <<locked>> | 92% | 53,969 psi | 86% | 2100 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 92% | 56,608 psi | 90% | 2024 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 98% | 56,217 psi | 89% | 2024 fps | 100% |
| SNPE Vectan Tubal 7000ᴾ | <<locked>> | 100% | 51,242 psi | 81% | 2028 fps | 97.4% |
| Somchem S321 | <<locked>> | 88% | 56,376 psi | 89% | 2113 fps | 100% |
| Somchem S335 | <<locked>> | 92% | 55,724 psi | 88% | 2028 fps | 100% |
| Somchem S341 | <<locked>> | 92% | 56,594 psi | 90% | 2116 fps | 100% |
| Somchem S355ᴾ | <<locked>> | 100% | 56,405 psi | 89% | 2136 fps | 100% |
| Somchem S365ᴾ | <<locked>> | 100% | 40,712 psi | 65% | 2031 fps | 100% |
| Vihtavuori N130 | <<locked>> | 88% | 56,884 psi | 90% | 2001 fps | 100% |
| Vihtavuori N133 | <<locked>> | 92% | 56,521 psi | 90% | 2011 fps | 100% |
| Vihtavuori N135 | <<locked>> | 94% | 53,969 psi | 86% | 2044 fps | 100% |
| Vihtavuori N140 | <<locked>> | 94% | 55,201 psi | 87% | 2060 fps | 100% |
| Vihtavuori N150ᴾ | <<locked>> | 100% | 54,215 psi | 86% | 2080 fps | 100% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 48,066 psi | 76% | 2064 fps | 99.1% |
| Vihtavuori N530 | <<locked>> | 90% | 55,608 psi | 88% | 2083 fps | 100% |
| Vihtavuori N540 | <<locked>> | 96% | 56,782 psi | 90% | 2100 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 47,065 psi | 75% | 2070 fps | 98.9% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 33,982 psi | 54% | 1939 fps | 97.2% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 49,095 psi | 78% | 2054 fps | 100% |
| Winchester 748 | <<locked>> | 90% | 54,926 psi | 87% | 2123 fps | 100% |
| Winchester 760ᴾ | <<locked>> | 100% | 49,269 psi | 78% | 2113 fps | 97.3% |
| Winchester StaBALL Match | <<locked>> | 94% | 57,014 psi | 90% | 2142 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% | 42,134 psi | 67% | 1877 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 45,469 psi | 72% | 1955 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 34,621 psi | 55% | 1824 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 40,756 psi | 65% | 1929 fps | 100% |
| Accurate 2700 | <<locked>> | 88% | 45,252 psi | 72% | 1942 fps | 95.2% |
| Accurate 4064 | <<locked>> | 80% | 32,750 psi | 52% | 1818 fps | 99.9% |
| Accurate 4350 | <<locked>> | 88% | 30,313 psi | 48% | 1834 fps | 95.2% |
| Accurate LT-30 | <<locked>> | 80% | 50,372 psi | 80% | 1926 fps | 100% |
| Accurate LT-32 | <<locked>> | 80% | 50,734 psi | 80% | 1946 fps | 100% |
| ADI AR 2206H | <<locked>> | 80% | 38,464 psi | 61% | 1896 fps | 98.6% |
| ADI AR 2208 | <<locked>> | 80% | 32,924 psi | 52% | 1791 fps | 96.5% |
| ADI AR 2219 | <<locked>> | 80% | 50,415 psi | 80% | 2018 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 80% | 40,466 psi | 64% | 1903 fps | 99.6% |
| Alliant AR-Comp | <<locked>> | 80% | 39,798 psi | 63% | 1896 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 46,862 psi | 74% | 2044 fps | 99.9% |
| Alliant Power Pro 2000-MR | 38 gr | 80% | 34,722 psi | 55% | 1913 fps | 96.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 31,778 psi | 50% | 1804 fps | 97.9% |
| Alliant Reloder-10x | <<locked>> | 80% | 47,543 psi | 75% | 1939 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 34,374 psi | 54% | 1847 fps | 97.3% |
| Alliant Reloder-16 | <<locked>> | 88% | 32,097 psi | 51% | 1847 fps | 95.5% |
| Alliant Reloder-17 | <<locked>> | 80% | 27,659 psi | 44% | 1778 fps | 95.4% |
| Alliant Reloder-23 | <<locked>> | 96% | 28,631 psi | 45% | 1808 fps | 95.6% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 48,994 psi | 78% | 1929 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 37,173 psi | 59% | 1896 fps | 97.4% |
| Bofors RP3 | <<locked>> | 80% | 31,125 psi | 49% | 1804 fps | 97.9% |
| Bofors RP7 | <<locked>> | 94% | 44,614 psi | 71% | 1969 fps | 95.5% |
| Hodgdon Benchmark | <<locked>> | 80% | 42,656 psi | 68% | 1896 fps | 99.9% |
| Hodgdon BL-C2 | <<locked>> | 80% | 38,624 psi | 61% | 1923 fps | 99.7% |
| Hodgdon CFE223 | <<locked>> | 80% | 42,134 psi | 67% | 2014 fps | 99% |
| Hodgdon H322 | <<locked>> | 80% | 46,238 psi | 73% | 1972 fps | 100% |
| Hodgdon H335 | <<locked>> | 80% | 46,847 psi | 74% | 1991 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 32,300 psi | 51% | 1808 fps | 95.1% |
| Hodgdon H414 | <<locked>> | 94% | 40,785 psi | 65% | 1991 fps | 95.3% |
| Hodgdon H4350 | <<locked>> | 96% | 47,747 psi | 76% | 2044 fps | 95.4% |
| Hodgdon H4895 | <<locked>> | 80% | 38,725 psi | 61% | 1903 fps | 99.1% |
| Hodgdon Hybrid 100V | <<locked>> | 86% | 27,340 psi | 43% | 1729 fps | 95.4% |
| Hodgdon LEVERevolution | 37.2 gr | 80% | 34,635 psi | 55% | 1883 fps | 98.7% |
| Hodgdon Superformance | <<locked>> | 96% | 43,830 psi | 69% | 2047 fps | 95.1% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,904 psi | 41% | 1079 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 37,362 psi | 59% | 1870 fps | 98.8% |
| IMR 3031 | <<locked>> | 80% | 37,782 psi | 60% | 1900 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 34,505 psi | 55% | 1814 fps | 97.3% |
| IMR 4166 Enduron | <<locked>> | 84% | 41,989 psi | 67% | 1903 fps | 95.4% |
| IMR 4198 | <<locked>> | 80% | 48,095 psi | 76% | 1906 fps | 100% |
| IMR 4350 | <<locked>> | 98% | 44,179 psi | 70% | 1985 fps | 95.3% |
| IMR 4451 Enduron | <<locked>> | 90% | 41,292 psi | 65% | 1923 fps | 95.1% |
| IMR 4831 | <<locked>> | 90% | 31,778 psi | 50% | 1841 fps | 95.7% |
| IMR 4895 | <<locked>> | 80% | 35,172 psi | 56% | 1870 fps | 98.1% |
| IMR 8208 XBR | <<locked>> | 80% | 40,466 psi | 64% | 1903 fps | 99.6% |
| Lovex D073.5 | <<locked>> | 80% | 45,150 psi | 72% | 1962 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 36,811 psi | 58% | 1880 fps | 99.9% |
| Lovex S060 | <<locked>> | 80% | 39,407 psi | 62% | 1854 fps | 98.7% |
| Lovex S062 | <<locked>> | 80% | 34,272 psi | 54% | 1818 fps | 98.8% |
| Lovex S065 | <<locked>> | 88% | 35,578 psi | 56% | 1844 fps | 95.2% |
| Lovex S070 | <<locked>> | 94% | 40,234 psi | 64% | 1936 fps | 95.3% |
| Norma 200 | <<locked>> | 80% | 53,737 psi | 85% | 1985 fps | 100% |
| Norma 201 | <<locked>> | 80% | 37,942 psi | 60% | 1864 fps | 99.4% |
| Norma 202 | <<locked>> | 80% | 37,739 psi | 60% | 1870 fps | 100% |
| Norma 203B | <<locked>> | 80% | 33,779 psi | 54% | 1841 fps | 97.7% |
| Norma URP | <<locked>> | 88% | 31,633 psi | 50% | 1841 fps | 95.3% |
| Ramshot Big Game | <<locked>> | 80% | 33,315 psi | 53% | 1850 fps | 97.2% |
| Ramshot Hunter | <<locked>> | 94% | 37,318 psi | 59% | 1942 fps | 95.1% |
| Ramshot TAC | <<locked>> | 80% | 40,234 psi | 64% | 1906 fps | 96.7% |
| Ramshot Wild Boar | <<locked>> | 80% | 39,465 psi | 63% | 1923 fps | 98.8% |
| Ramshot X-Terminator | <<locked>> | 80% | 43,700 psi | 69% | 1939 fps | 99.2% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,063 psi | 41% | 1102 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 45,368 psi | 72% | 1962 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 86% | 39,798 psi | 63% | 1909 fps | 95.6% |
| ReloadSwiss RS 52 | 36.8 gr | 80% | 35,476 psi | 56% | 1919 fps | 97.6% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 29,457 psi | 47% | 1827 fps | 98.7% |
| ReloadSwiss RS 62 | <<locked>> | 90% | 32,692 psi | 52% | 1886 fps | 95.4% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 35,723 psi | 57% | 1932 fps | 95.3% |
| Rottweil R 901 | <<locked>> | 80% | 41,510 psi | 66% | 1890 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 35,911 psi | 57% | 1827 fps | 99.1% |
| Rottweil R 903 | <<locked>> | 80% | 29,269 psi | 46% | 1765 fps | 97% |
| Rottweil R 907 | <<locked>> | 94% | 44,614 psi | 71% | 1969 fps | 95.5% |
| Shooters World Long Rifle | <<locked>> | 88% | 35,578 psi | 56% | 1844 fps | 95.2% |
| Shooters World Match Rifle | <<locked>> | 80% | 36,811 psi | 58% | 1880 fps | 99.9% |
| Shooters World Precision | <<locked>> | 80% | 34,272 psi | 54% | 1818 fps | 98.8% |
| Shooters World SW4350 | <<locked>> | 94% | 40,234 psi | 64% | 1936 fps | 95.3% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 48,138 psi | 76% | 1975 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 50,792 psi | 81% | 2031 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 30,545 psi | 48% | 1801 fps | 96.4% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 48,385 psi | 77% | 1952 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 38,218 psi | 61% | 1883 fps | 96.8% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 37,028 psi | 59% | 1877 fps | 98.3% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 39,566 psi | 63% | 1831 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 32,489 psi | 51% | 1739 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 94% | 42,206 psi | 67% | 1916 fps | 95.6% |
| Somchem S321 | <<locked>> | 80% | 43,149 psi | 68% | 1959 fps | 99.9% |
| Somchem S335 | <<locked>> | 80% | 39,102 psi | 62% | 1837 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 37,855 psi | 60% | 1883 fps | 98.4% |
| Somchem S355 | <<locked>> | 80% | 30,618 psi | 49% | 1775 fps | 97.2% |
| Somchem S365 | <<locked>> | 84% | 24,932 psi | 40% | 1722 fps | 95.9% |
| Vihtavuori N130 | <<locked>> | 80% | 44,817 psi | 71% | 1873 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 39,682 psi | 63% | 1827 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 34,998 psi | 55% | 1818 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 35,679 psi | 57% | 1824 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 28,761 psi | 46% | 1726 fps | 97.9% |
| Vihtavuori N160 | <<locked>> | 88% | 33,127 psi | 53% | 1837 fps | 95.7% |
| Vihtavuori N530 | <<locked>> | 80% | 40,350 psi | 64% | 1900 fps | 99.6% |
| Vihtavuori N540 | <<locked>> | 80% | 34,316 psi | 54% | 1821 fps | 99.9% |
| Vihtavuori N550 | <<locked>> | 88% | 32,111 psi | 51% | 1841 fps | 95.3% |
| Vihtavuori N555 | <<locked>> | 96% | 30,008 psi | 48% | 1860 fps | 95.7% |
| Winchester 6.5 StaBALL | <<locked>> | 82% | 27,688 psi | 44% | 1709 fps | 95.5% |
| Winchester 748 | <<locked>> | 80% | 39,334 psi | 62% | 1932 fps | 99.9% |
| Winchester 760 | <<locked>> | 94% | 40,785 psi | 65% | 1991 fps | 95.3% |
| Winchester StaBALL Match | <<locked>> | 80% | 36,201 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 108 powders for .338-06 A-Square loaded with the .338 | 300gr | Nosler Custom Competition. ReloadSwiss RS 60 delivers the highest muzzle velocity at 2,228 fps; across all powders the maximum-charge window runs from 1,211 fps to 2,228 fps. Accurate 4350 gives the best case fill at 100 %, and 108 of the 108 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 1:12.0 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 | Nosler Custom Competition 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.