Load Specifications
Bullet Manufacturer:Woodleigh
Bullet Weight:300 gr
Bullet Diameter:0.338"
Bullet Length:<<locked>>
Caliber:8.5 x 55 Blaser load data
Case Length (l3):2.15"
Cartridge Length (C.O.L.):<<locked>>
Case Capacity:77 Grains of Water
Primer Size:Large Rifle (LR)
Barrel Length:23.62"
Max. allowed Pressure:62,366 psi
Recommended Twist Rate:1:15.5
Load data in caliber 8.5 x 55 Blaser with .338 | 300gr | Woodleigh RN SN bullet and 112 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 70, Hodgdon Superformance and Alliant Reloder-17.
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: 23.62"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2015 | <<locked>> | 82% | 55,709 psi | 89% | 2123 fps | 100% |
| Accurate 2495 | <<locked>> | 86% | 54,824 psi | 88% | 2152 fps | 100% |
| Accurate 2520 | <<locked>> | 82% | 56,086 psi | 90% | 2205 fps | 100% |
| Accurate 2700 | <<locked>> | 86% | 53,229 psi | 85% | 2172 fps | 98.8% |
| Accurate 3100ᴾ | <<locked>> | 100% | 44,875 psi | 72% | 2156 fps | 99% |
| Accurate 4064 | <<locked>> | 88% | 54,853 psi | 88% | 2195 fps | 100% |
| Accurate 4350 | <<locked>> | 96% | 54,520 psi | 87% | 2283 fps | 100% |
| Accurate High Countryᴾ | <<locked>> | 100% | 48,834 psi | 78% | 2310 fps | 97% |
| ADI AR 2206H | <<locked>> | 84% | 54,723 psi | 88% | 2221 fps | 100% |
| ADI AR 2208 | <<locked>> | 90% | 55,869 psi | 90% | 2228 fps | 100% |
| ADI AR 2209ᴾ | <<locked>> | 100% | 52,489 psi | 84% | 2274 fps | 98.2% |
| ADI Benchmark 8208 | <<locked>> | 82% | 53,809 psi | 86% | 2178 fps | 100% |
| Alliant AR-Comp | <<locked>> | 82% | 54,969 psi | 88% | 2146 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 86% | 54,375 psi | 87% | 2326 fps | 100% |
| Alliant Power Pro Varmintᴾ | <<locked>> | 100% | 52,156 psi | 84% | 2270 fps | 98.2% |
| Alliant Reloder- TS 15.5 | <<locked>> | 90% | 55,927 psi | 90% | 2241 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 88% | 56,420 psi | 90% | 2260 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 98% | 55,593 psi | 89% | 2326 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 92% | 53,098 psi | 85% | 2310 fps | 100% |
| Alliant Reloder-19ᴾ | <<locked>> | 100% | 51,445 psi | 82% | 2267 fps | 98.1% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 45,281 psi | 73% | 2224 fps | 97.2% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 42,670 psi | 68% | 2178 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 37,449 psi | 60% | 2113 fps | 98.2% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 47,616 psi | 76% | 2320 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 84% | 54,389 psi | 87% | 2241 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 41,568 psi | 67% | 2162 fps | 96% |
| Bofors RP3 | <<locked>> | 88% | 53,258 psi | 85% | 2218 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 45,281 psi | 73% | 2224 fps | 97.2% |
| Bofors RP7 | <<locked>> | 92% | 52,953 psi | 85% | 2201 fps | 99% |
| Hodgdon Benchmark | <<locked>> | 82% | 55,390 psi | 89% | 2159 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 82% | 52,939 psi | 85% | 2205 fps | 100% |
| Hodgdon H380 | <<locked>> | 88% | 53,824 psi | 86% | 2231 fps | 100% |
| Hodgdon H414 | <<locked>> | 94% | 53,650 psi | 86% | 2287 fps | 99.5% |
| Hodgdon H4350 | <<locked>> | 92% | 54,201 psi | 87% | 2254 fps | 98.7% |
| Hodgdon H4831ᴾ | <<locked>> | 100% | 50,241 psi | 81% | 2224 fps | 95.8% |
| Hodgdon H4895 | <<locked>> | 84% | 55,303 psi | 89% | 2228 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 55,390 psi | 89% | 2257 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 86% | 54,969 psi | 88% | 2260 fps | 100% |
| Hodgdon Superformance | <<locked>> | 94% | 53,780 psi | 86% | 2320 fps | 99.3% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,056 psi | 58% | 1322 fps | 100% |
| Hodgdon VARGET | <<locked>> | 86% | 56,434 psi | 90% | 2228 fps | 100% |
| IMR 3031 | <<locked>> | 84% | 55,811 psi | 89% | 2205 fps | 100% |
| IMR 4064 | <<locked>> | 88% | 55,230 psi | 89% | 2208 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 86% | 55,071 psi | 88% | 2201 fps | 99.5% |
| IMR 4350 | <<locked>> | 96% | 53,287 psi | 85% | 2231 fps | 99.1% |
| IMR 4451 Enduron | <<locked>> | 92% | 54,868 psi | 88% | 2228 fps | 99.4% |
| IMR 4831 | <<locked>> | 98% | 54,998 psi | 88% | 2274 fps | 100% |
| IMR 4895 | <<locked>> | 86% | 54,563 psi | 87% | 2244 fps | 100% |
| IMR 4955 Enduronᴾ | <<locked>> | 100% | 52,315 psi | 84% | 2218 fps | 96.5% |
| IMR 8208 XBR | <<locked>> | 82% | 53,809 psi | 86% | 2178 fps | 100% |
| Lovex D073.6 | <<locked>> | 84% | 54,781 psi | 88% | 2198 fps | 100% |
| Lovex S060 | <<locked>> | 84% | 54,085 psi | 87% | 2159 fps | 100% |
| Lovex S062 | <<locked>> | 88% | 55,158 psi | 88% | 2201 fps | 100% |
| Lovex S065 | <<locked>> | 94% | 54,418 psi | 87% | 2224 fps | 99.9% |
| Lovex S070 | <<locked>> | 96% | 55,303 psi | 89% | 2254 fps | 99.6% |
| Lovex S071ᴾ | <<locked>> | 100% | 37,449 psi | 60% | 2044 fps | 97.6% |
| Norma 201 | <<locked>> | 84% | 53,708 psi | 86% | 2175 fps | 100% |
| Norma 202 | <<locked>> | 84% | 54,070 psi | 87% | 2172 fps | 100% |
| Norma 203B | <<locked>> | 88% | 55,651 psi | 89% | 2251 fps | 100% |
| Norma 204 | <<locked>> | 96% | 53,664 psi | 86% | 2274 fps | 98.3% |
| Norma MRPᴾ | <<locked>> | 100% | 47,442 psi | 76% | 2287 fps | 98.8% |
| Norma URP | <<locked>> | 96% | 53,461 psi | 86% | 2274 fps | 100% |
| Ramshot Big Game | <<locked>> | 88% | 56,188 psi | 90% | 2274 fps | 100% |
| Ramshot Hunter | <<locked>> | 98% | 55,608 psi | 89% | 2316 fps | 99.9% |
| Ramshot TAC | <<locked>> | 82% | 53,722 psi | 86% | 2205 fps | 99.9% |
| Ramshot Wild Boar | <<locked>> | 82% | 53,461 psi | 86% | 2215 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,695 psi | 59% | 1355 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 88% | 54,114 psi | 87% | 2221 fps | 99.7% |
| ReloadSwiss RS 52 | <<locked>> | 84% | 53,635 psi | 86% | 2274 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 90% | 52,866 psi | 85% | 2303 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 96% | 54,244 psi | 87% | 2306 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 96% | 53,171 psi | 85% | 2329 fps | 100% |
| Rottweil R 901 | <<locked>> | 82% | 54,650 psi | 88% | 2152 fps | 100% |
| Rottweil R 902 | <<locked>> | 86% | 54,172 psi | 87% | 2175 fps | 100% |
| Rottweil R 903 | <<locked>> | 90% | 53,127 psi | 85% | 2211 fps | 100% |
| Rottweil R 904ᴾ | <<locked>> | 100% | 54,302 psi | 87% | 2251 fps | 97.4% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 50,386 psi | 81% | 2254 fps | 98.1% |
| Rottweil R 907 | <<locked>> | 92% | 52,953 psi | 85% | 2201 fps | 99% |
| Shooters World Long Rifle | <<locked>> | 94% | 54,418 psi | 87% | 2224 fps | 99.9% |
| Shooters World Match Rifle | <<locked>> | 84% | 54,781 psi | 88% | 2198 fps | 100% |
| Shooters World Precision | <<locked>> | 88% | 55,158 psi | 88% | 2201 fps | 100% |
| Shooters World SW4350 | <<locked>> | 96% | 55,303 psi | 89% | 2254 fps | 99.6% |
| SNPE Vectan SP 11 | <<locked>> | 90% | 54,737 psi | 88% | 2264 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 84% | 55,724 psi | 89% | 2228 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 84% | 53,142 psi | 85% | 2201 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 84% | 54,897 psi | 88% | 2116 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 90% | 55,303 psi | 89% | 2119 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 94% | 54,418 psi | 87% | 2188 fps | 99.4% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 49,908 psi | 80% | 2251 fps | 98% |
| Somchem S335 | <<locked>> | 84% | 54,433 psi | 87% | 2119 fps | 100% |
| Somchem S341 | <<locked>> | 84% | 55,448 psi | 89% | 2218 fps | 100% |
| Somchem S355 | <<locked>> | 90% | 53,287 psi | 85% | 2208 fps | 100% |
| Somchem S361ᴾ | <<locked>> | 100% | 56,159 psi | 90% | 2251 fps | 96.9% |
| Somchem S365ᴾ | <<locked>> | 100% | 55,245 psi | 89% | 2310 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 51,198 psi | 82% | 2238 fps | 98.8% |
| Vihtavuori N133 | <<locked>> | 84% | 55,288 psi | 89% | 2100 fps | 100% |
| Vihtavuori N135 | <<locked>> | 86% | 54,273 psi | 87% | 2139 fps | 100% |
| Vihtavuori N140 | <<locked>> | 86% | 54,520 psi | 87% | 2156 fps | 100% |
| Vihtavuori N150 | <<locked>> | 92% | 54,476 psi | 87% | 2188 fps | 100% |
| Vihtavuori N160 | <<locked>> | 96% | 55,883 psi | 90% | 2264 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 43,990 psi | 71% | 2129 fps | 97.2% |
| Vihtavuori N530 | <<locked>> | 82% | 54,099 psi | 87% | 2175 fps | 100% |
| Vihtavuori N540 | <<locked>> | 88% | 55,999 psi | 90% | 2195 fps | 100% |
| Vihtavuori N550 | <<locked>> | 96% | 54,795 psi | 88% | 2274 fps | 100% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 47,282 psi | 76% | 2234 fps | 100% |
| Vihtavuori N560ᴾ | <<locked>> | 100% | 48,254 psi | 77% | 2274 fps | 95.8% |
| Winchester 6.5 StaBALL | <<locked>> | 96% | 55,608 psi | 89% | 2244 fps | 100% |
| Winchester 748 | <<locked>> | 82% | 54,302 psi | 87% | 2218 fps | 100% |
| Winchester 760 | <<locked>> | 94% | 53,650 psi | 86% | 2287 fps | 99.5% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 38,087 psi | 61% | 2215 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 84% | 52,837 psi | 85% | 2208 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 47,732 psi | 77% | 2185 fps | 97.3% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 23.62"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2015 | <<locked>> | 80% | 52,431 psi | 84% | 2087 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 45,281 psi | 73% | 2044 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 52,533 psi | 84% | 2165 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 43,874 psi | 70% | 2044 fps | 97.3% |
| Accurate 3100 | <<locked>> | 88% | 30,066 psi | 48% | 1906 fps | 95.2% |
| Accurate 4064 | <<locked>> | 80% | 42,859 psi | 69% | 2051 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 31,792 psi | 51% | 1942 fps | 97.7% |
| Accurate High Country | <<locked>> | 96% | 42,699 psi | 68% | 2215 fps | 95.4% |
| ADI AR 2206H | <<locked>> | 80% | 48,370 psi | 78% | 2142 fps | 100% |
| ADI AR 2208 | <<locked>> | 80% | 41,278 psi | 66% | 2031 fps | 99.7% |
| ADI AR 2209 | <<locked>> | 92% | 40,756 psi | 65% | 2100 fps | 95.5% |
| ADI Benchmark 8208 | <<locked>> | 80% | 50,444 psi | 81% | 2139 fps | 100% |
| Alliant AR-Comp | <<locked>> | 80% | 51,605 psi | 83% | 2110 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 44,266 psi | 71% | 2192 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 92% | 40,611 psi | 65% | 2100 fps | 95.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 41,234 psi | 66% | 2051 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 44,019 psi | 71% | 2100 fps | 99.9% |
| Alliant Reloder-16 | <<locked>> | 80% | 31,952 psi | 51% | 1952 fps | 97.9% |
| Alliant Reloder-17 | 48.3 gr | 80% | 35,636 psi | 57% | 2051 fps | 99.8% |
| Alliant Reloder-19 | <<locked>> | 92% | 40,176 psi | 64% | 2096 fps | 95.6% |
| Alliant Reloder-22 | <<locked>> | 96% | 39,711 psi | 64% | 2133 fps | 95.6% |
| Alliant Reloder-23 | <<locked>> | 80% | 23,221 psi | 37% | 1768 fps | 95.3% |
| Alliant Reloder-25 | <<locked>> | 94% | 31,328 psi | 50% | 1982 fps | 95.9% |
| Alliant Reloder-26 | <<locked>> | 84% | 27,601 psi | 44% | 1936 fps | 95.1% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 47,659 psi | 76% | 2156 fps | 100% |
| Bofors RP15 | <<locked>> | 98% | 39,175 psi | 63% | 2123 fps | 95.3% |
| Bofors RP3 | <<locked>> | 80% | 40,959 psi | 66% | 2057 fps | 100% |
| Bofors RP5 | <<locked>> | 96% | 39,711 psi | 64% | 2133 fps | 95.6% |
| Bofors RP7 | <<locked>> | 80% | 36,840 psi | 59% | 1959 fps | 95.7% |
| Hodgdon Benchmark | <<locked>> | 80% | 51,967 psi | 83% | 2119 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 49,617 psi | 80% | 2165 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 41,568 psi | 67% | 2064 fps | 99.2% |
| Hodgdon H414 | <<locked>> | 80% | 33,953 psi | 54% | 1982 fps | 95.5% |
| Hodgdon H4350 | <<locked>> | 80% | 37,115 psi | 60% | 1995 fps | 95% |
| Hodgdon H4831 | <<locked>> | 98% | 47,268 psi | 76% | 2182 fps | 95.1% |
| Hodgdon H4895 | <<locked>> | 80% | 48,892 psi | 78% | 2149 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 29,428 psi | 47% | 1873 fps | 98.4% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 45,136 psi | 72% | 2139 fps | 100% |
| Hodgdon Superformance | 52.3 gr | 82% | 35,375 psi | 57% | 2031 fps | 95.3% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,876 psi | 43% | 1178 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 46,934 psi | 75% | 2113 fps | 100% |
| IMR 3031 | <<locked>> | 80% | 49,240 psi | 79% | 2133 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 43,395 psi | 70% | 2057 fps | 99.9% |
| IMR 4166 Enduron | <<locked>> | 80% | 45,672 psi | 73% | 2077 fps | 98.3% |
| IMR 4350 | <<locked>> | 84% | 36,999 psi | 59% | 1988 fps | 95.8% |
| IMR 4451 Enduron | <<locked>> | 80% | 38,218 psi | 61% | 1985 fps | 96.6% |
| IMR 4831 | <<locked>> | 80% | 30,893 psi | 50% | 1913 fps | 97.4% |
| IMR 4895 | <<locked>> | 80% | 45,136 psi | 72% | 2123 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 96% | 46,224 psi | 74% | 2136 fps | 95.1% |
| IMR 8208 XBR | <<locked>> | 80% | 50,444 psi | 81% | 2139 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 47,950 psi | 77% | 2119 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 48,153 psi | 77% | 2087 fps | 100% |
| Lovex S062 | <<locked>> | 80% | 43,453 psi | 70% | 2057 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 35,650 psi | 57% | 1946 fps | 97.3% |
| Lovex S070 | <<locked>> | 80% | 33,852 psi | 54% | 1929 fps | 95.6% |
| Lovex S071 | <<locked>> | 94% | 30,951 psi | 50% | 1923 fps | 95.6% |
| Norma 201 | <<locked>> | 80% | 47,413 psi | 76% | 2100 fps | 100% |
| Norma 202 | <<locked>> | 80% | 47,964 psi | 77% | 2100 fps | 100% |
| Norma 203B | <<locked>> | 80% | 43,395 psi | 70% | 2090 fps | 100% |
| Norma 204 | <<locked>> | 88% | 41,379 psi | 66% | 2096 fps | 95.7% |
| Norma MRP | <<locked>> | 90% | 34,171 psi | 55% | 2054 fps | 95.2% |
| Norma URP | <<locked>> | 80% | 32,068 psi | 51% | 1942 fps | 97.6% |
| Ramshot Big Game | <<locked>> | 80% | 43,033 psi | 69% | 2110 fps | 100% |
| Ramshot Hunter | <<locked>> | 80% | 31,183 psi | 50% | 1932 fps | 95.3% |
| Ramshot TAC | <<locked>> | 80% | 50,227 psi | 81% | 2162 fps | 99.7% |
| Ramshot Wild Boar | <<locked>> | 80% | 50,169 psi | 80% | 2175 fps | 100% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,311 psi | 44% | 1207 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 41,916 psi | 67% | 2054 fps | 98.2% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 46,833 psi | 75% | 2188 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 37,913 psi | 61% | 2093 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 31,430 psi | 50% | 1959 fps | 97.2% |
| ReloadSwiss RS 70 | 49 gr | 80% | 31,256 psi | 50% | 1959 fps | 96.4% |
| Rottweil R 901 | <<locked>> | 80% | 51,547 psi | 83% | 2116 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 45,295 psi | 73% | 2064 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 38,624 psi | 62% | 2018 fps | 99.9% |
| Rottweil R 904 | <<locked>> | 94% | 45,034 psi | 72% | 2123 fps | 95.5% |
| Rottweil R 905 | <<locked>> | 92% | 38,885 psi | 62% | 2080 fps | 95.5% |
| Rottweil R 907 | <<locked>> | 80% | 36,840 psi | 59% | 1959 fps | 95.7% |
| Shooters World Long Rifle | <<locked>> | 80% | 35,650 psi | 57% | 1946 fps | 97.3% |
| Shooters World Match Rifle | <<locked>> | 80% | 47,950 psi | 77% | 2119 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 43,453 psi | 70% | 2057 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 33,852 psi | 54% | 1929 fps | 95.6% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 39,494 psi | 63% | 2060 fps | 99.8% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 48,936 psi | 78% | 2146 fps | 99.8% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 46,775 psi | 75% | 2123 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 48,588 psi | 78% | 2044 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 40,712 psi | 65% | 1949 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 34,766 psi | 56% | 1900 fps | 95.7% |
| SNPE Vectan Tubal 8000 | <<locked>> | 92% | 38,537 psi | 62% | 2073 fps | 95.3% |
| Somchem S335 | <<locked>> | 80% | 48,182 psi | 77% | 2047 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 48,486 psi | 78% | 2136 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 39,276 psi | 63% | 2018 fps | 99.9% |
| Somchem S361 | <<locked>> | 96% | 49,110 psi | 79% | 2162 fps | 95.5% |
| Somchem S365 | <<locked>> | 80% | 28,848 psi | 46% | 1913 fps | 99.4% |
| Somchem S385 | <<locked>> | 88% | 34,795 psi | 56% | 1985 fps | 95% |
| Vihtavuori N133 | <<locked>> | 80% | 49,037 psi | 79% | 2034 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 45,005 psi | 72% | 2034 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 45,353 psi | 73% | 2047 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 37,362 psi | 60% | 1965 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 33,402 psi | 54% | 1942 fps | 97.9% |
| Vihtavuori N165 | <<locked>> | 94% | 36,477 psi | 58% | 2008 fps | 95% |
| Vihtavuori N530 | <<locked>> | 80% | 50,633 psi | 81% | 2136 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 43,627 psi | 70% | 2047 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 32,866 psi | 53% | 1946 fps | 97.6% |
| Vihtavuori N555 | <<locked>> | 80% | 24,831 psi | 40% | 1824 fps | 95.5% |
| Vihtavuori N560 | <<locked>> | 98% | 45,194 psi | 72% | 2228 fps | 95% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 32,866 psi | 53% | 1923 fps | 99.3% |
| Winchester 748 | <<locked>> | 80% | 50,879 psi | 82% | 2178 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 34,127 psi | 55% | 1985 fps | 95.6% |
| Winchester StaBALL HD | <<locked>> | 84% | 23,105 psi | 37% | 1827 fps | 95.6% |
| Winchester StaBALL Match | <<locked>> | 80% | 46,427 psi | 74% | 2126 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 94% | 39,131 psi | 63% | 2054 fps | 95% |
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 8.5 x 55 Blaser loaded with the .338 | 300gr | Woodleigh RN SN. ReloadSwiss RS 70 delivers the highest muzzle velocity at 2,329 fps; across all powders the maximum-charge window runs from 1,322 fps to 2,329 fps. Accurate 3100 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 (430 MPa), the top charges use 58–90 %, leaving at least 10 % headroom. The 300.0 gr projectile in 0.338" calls for a 1:15.5 twist; slower twists will usually not stabilise this weight. Accurate 3100, Accurate High Country, ADI AR 2209 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. ReloadSwiss RS 70, Hodgdon Superformance, Alliant Reloder-17 rank at the top here: for 8.5 x 55 Blaser with the .338 | 300gr | Woodleigh RN SN 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.