Load Specifications
Bullet Manufacturer:Cutting Edge
Bullet Weight:260 gr
Bullet Diameter:0.338"
Bullet Length:<<locked>>
Caliber:8.5 x 63 load data
Case Length (l3):2.48"
Cartridge Length (C.O.L.):<<locked>>
Case Capacity:75.5 Grains of Water
Primer Size:Large Rifle (LR)
Barrel Length:23.62"
Max. allowed Pressure:62,366 psi
Recommended Twist Rate:1:11.0
Load data in caliber 8.5 x 63 with .338 | 260gr | CutEdge Maximus bullet and 106 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: 23.62"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2015 | <<locked>> | 90% | 55,840 psi | 90% | 2251 fps | 100% |
| Accurate 2200 | <<locked>> | 82% | 56,115 psi | 90% | 2339 fps | 99.7% |
| Accurate 2460 | <<locked>> | 86% | 54,070 psi | 87% | 2277 fps | 100% |
| Accurate 2495 | <<locked>> | 96% | 55,811 psi | 89% | 2300 fps | 100% |
| Accurate 2520 | <<locked>> | 90% | 55,535 psi | 89% | 2329 fps | 100% |
| Accurate 2700 | <<locked>> | 94% | 53,751 psi | 86% | 2264 fps | 96.3% |
| Accurate 4064 | <<locked>> | 98% | 55,477 psi | 89% | 2339 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 44,266 psi | 71% | 2270 fps | 98.2% |
| Accurate LT-30 | <<locked>> | 84% | 55,854 psi | 90% | 2205 fps | 100% |
| Accurate LT-32 | <<locked>> | 84% | 56,333 psi | 90% | 2228 fps | 100% |
| ADI AR 2206H | <<locked>> | 92% | 54,824 psi | 88% | 2339 fps | 99.9% |
| ADI AR 2208 | <<locked>> | 98% | 55,492 psi | 89% | 2333 fps | 99.7% |
| ADI AR 2219 | <<locked>> | 82% | 52,721 psi | 85% | 2270 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 90% | 54,027 psi | 87% | 2297 fps | 100% |
| Alliant AR-Comp | <<locked>> | 90% | 54,041 psi | 87% | 2277 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 86% | 55,738 psi | 89% | 2385 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 94% | 54,157 psi | 87% | 2434 fps | 99.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 98% | 54,665 psi | 88% | 2349 fps | 100% |
| Alliant Reloder-10x | <<locked>> | 86% | 55,593 psi | 89% | 2254 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 96% | 55,695 psi | 89% | 2369 fps | 99.8% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 44,846 psi | 72% | 2280 fps | 98.5% |
| Alliant Reloder-17ᴾ | <<locked>> | 100% | 51,663 psi | 83% | 2405 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 84% | 54,752 psi | 88% | 2208 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 92% | 54,389 psi | 87% | 2352 fps | 99.5% |
| Bofors RP3 | <<locked>> | 98% | 54,723 psi | 88% | 2359 fps | 100% |
| Bofors RP7ᴾ | <<locked>> | 100% | 52,620 psi | 84% | 2290 fps | 96.4% |
| Hodgdon Benchmark | <<locked>> | 90% | 56,246 psi | 90% | 2283 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 92% | 56,304 psi | 90% | 2369 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 88% | 54,795 psi | 88% | 2408 fps | 99.8% |
| Hodgdon H322 | <<locked>> | 86% | 55,114 psi | 88% | 2297 fps | 100% |
| Hodgdon H335 | <<locked>> | 86% | 56,028 psi | 90% | 2320 fps | 100% |
| Hodgdon H380 | <<locked>> | 96% | 52,881 psi | 85% | 2329 fps | 99% |
| Hodgdon H414ᴾ | <<locked>> | 100% | 48,196 psi | 77% | 2316 fps | 96.4% |
| Hodgdon H4350ᴾ | <<locked>> | 100% | 53,432 psi | 86% | 2336 fps | 95.9% |
| Hodgdon H4895 | <<locked>> | 92% | 55,347 psi | 89% | 2349 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 40,988 psi | 66% | 2185 fps | 98.9% |
| Hodgdon LEVERevolution | <<locked>> | 94% | 53,751 psi | 86% | 2372 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,592 psi | 55% | 1352 fps | 100% |
| Hodgdon VARGET | <<locked>> | 92% | 53,345 psi | 86% | 2306 fps | 99.9% |
| IMR 3031 | <<locked>> | 92% | 54,520 psi | 87% | 2329 fps | 100% |
| IMR 4064 | <<locked>> | 96% | 55,303 psi | 89% | 2320 fps | 99.8% |
| IMR 4166 Enduron | <<locked>> | 94% | 55,941 psi | 90% | 2303 fps | 97.5% |
| IMR 4198 | <<locked>> | 86% | 56,434 psi | 90% | 2218 fps | 100% |
| IMR 4451 Enduronᴾ | <<locked>> | 100% | 54,853 psi | 88% | 2320 fps | 97.3% |
| IMR 4831ᴾ | <<locked>> | 100% | 42,627 psi | 68% | 2228 fps | 98% |
| IMR 4895 | <<locked>> | 94% | 53,635 psi | 86% | 2352 fps | 99.9% |
| IMR 8208 XBR | <<locked>> | 90% | 54,027 psi | 87% | 2297 fps | 100% |
| Lovex D073.5 | <<locked>> | 86% | 54,012 psi | 87% | 2287 fps | 100% |
| Lovex D073.6 | <<locked>> | 92% | 53,577 psi | 86% | 2316 fps | 100% |
| Lovex S060 | <<locked>> | 92% | 55,172 psi | 88% | 2277 fps | 99.9% |
| Lovex S062 | <<locked>> | 96% | 54,491 psi | 87% | 2316 fps | 100% |
| Lovex S065ᴾ | <<locked>> | 100% | 49,995 psi | 80% | 2267 fps | 97.9% |
| Lovex S070ᴾ | <<locked>> | 100% | 47,427 psi | 76% | 2251 fps | 96.3% |
| Norma 200 | <<locked>> | 82% | 55,506 psi | 89% | 2231 fps | 100% |
| Norma 201 | <<locked>> | 92% | 53,156 psi | 85% | 2287 fps | 100% |
| Norma 202 | <<locked>> | 92% | 53,780 psi | 86% | 2293 fps | 100% |
| Norma 203B | <<locked>> | 96% | 54,781 psi | 88% | 2359 fps | 99.9% |
| Norma URPᴾ | <<locked>> | 100% | 44,817 psi | 72% | 2270 fps | 98.2% |
| Ramshot Big Game | <<locked>> | 96% | 55,347 psi | 89% | 2385 fps | 99.9% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 44,251 psi | 71% | 2264 fps | 96.2% |
| Ramshot TAC | <<locked>> | 90% | 54,578 psi | 88% | 2316 fps | 98.7% |
| Ramshot Wild Boar | <<locked>> | 90% | 53,737 psi | 86% | 2333 fps | 99.8% |
| Ramshot X-Terminator | <<locked>> | 88% | 55,361 psi | 89% | 2303 fps | 99.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 34,766 psi | 56% | 1385 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 86% | 54,056 psi | 87% | 2287 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 96% | 53,708 psi | 86% | 2316 fps | 97.8% |
| ReloadSwiss RS 52 | <<locked>> | 94% | 55,608 psi | 89% | 2425 fps | 99.8% |
| ReloadSwiss RS 60ᴾ | <<locked>> | 100% | 55,274 psi | 89% | 2454 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 44,164 psi | 71% | 2287 fps | 97.9% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 45,600 psi | 73% | 2306 fps | 97.4% |
| Rottweil R 901 | <<locked>> | 90% | 54,389 psi | 87% | 2274 fps | 100% |
| Rottweil R 902 | <<locked>> | 94% | 53,751 psi | 86% | 2287 fps | 100% |
| Rottweil R 903ᴾ | <<locked>> | 100% | 54,650 psi | 88% | 2352 fps | 100% |
| Rottweil R 907ᴾ | <<locked>> | 100% | 52,620 psi | 84% | 2290 fps | 96.4% |
| Shooters World Long Rifleᴾ | <<locked>> | 100% | 49,995 psi | 80% | 2267 fps | 97.9% |
| Shooters World Match Rifle | <<locked>> | 92% | 53,577 psi | 86% | 2316 fps | 100% |
| Shooters World Precision | <<locked>> | 96% | 54,491 psi | 87% | 2316 fps | 100% |
| Shooters World SW4350ᴾ | <<locked>> | 100% | 47,427 psi | 76% | 2251 fps | 96.3% |
| Shooters World Tactical Rifle | <<locked>> | 84% | 53,896 psi | 86% | 2264 fps | 100% |
| SNPE Vectan BA6 1/2 | <<locked>> | 82% | 56,304 psi | 90% | 1988 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 82% | 53,011 psi | 85% | 2280 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 98% | 53,055 psi | 85% | 2365 fps | 99.8% |
| SNPE Vectan SP 3 | <<locked>> | 84% | 53,664 psi | 86% | 2238 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 92% | 56,304 psi | 90% | 2339 fps | 99.2% |
| SNPE Vectan SP 9 | <<locked>> | 92% | 53,127 psi | 85% | 2316 fps | 99.8% |
| SNPE Vectan Tubal 3000 | <<locked>> | 92% | 55,709 psi | 89% | 2241 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 98% | 55,216 psi | 89% | 2238 fps | 100% |
| SNPE Vectan Tubal 7000ᴾ | <<locked>> | 100% | 50,256 psi | 81% | 2228 fps | 96.5% |
| Somchem S321 | <<locked>> | 88% | 55,158 psi | 88% | 2329 fps | 100% |
| Somchem S335 | <<locked>> | 92% | 54,433 psi | 87% | 2241 fps | 100% |
| Somchem S341 | <<locked>> | 92% | 55,593 psi | 89% | 2333 fps | 99.9% |
| Somchem S355ᴾ | <<locked>> | 100% | 55,172 psi | 88% | 2349 fps | 100% |
| Somchem S365ᴾ | <<locked>> | 100% | 39,595 psi | 63% | 2224 fps | 99.6% |
| Vihtavuori N130 | <<locked>> | 88% | 55,695 psi | 89% | 2211 fps | 100% |
| Vihtavuori N133 | <<locked>> | 92% | 55,695 psi | 89% | 2228 fps | 100% |
| Vihtavuori N135 | <<locked>> | 96% | 56,057 psi | 90% | 2293 fps | 100% |
| Vihtavuori N140 | <<locked>> | 94% | 54,404 psi | 87% | 2277 fps | 100% |
| Vihtavuori N150ᴾ | <<locked>> | 100% | 53,563 psi | 86% | 2297 fps | 100% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 47,181 psi | 76% | 2267 fps | 98.5% |
| Vihtavuori N530 | <<locked>> | 90% | 54,549 psi | 87% | 2297 fps | 100% |
| Vihtavuori N540 | <<locked>> | 96% | 55,579 psi | 89% | 2313 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 46,079 psi | 74% | 2274 fps | 98.2% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 48,486 psi | 78% | 2260 fps | 99.8% |
| Winchester 748 | <<locked>> | 90% | 53,838 psi | 86% | 2339 fps | 100% |
| Winchester 760ᴾ | <<locked>> | 100% | 48,530 psi | 78% | 2320 fps | 96.4% |
| Winchester StaBALL Match | <<locked>> | 94% | 56,376 psi | 90% | 2365 fps | 100% |
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% | 40,770 psi | 65% | 2067 fps | 100% |
| Accurate 2200 | <<locked>> | 80% | 52,649 psi | 84% | 2293 fps | 99.5% |
| Accurate 2460 | <<locked>> | 80% | 44,164 psi | 71% | 2156 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 32,808 psi | 53% | 1995 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 39,450 psi | 63% | 2119 fps | 99.9% |
| Accurate 2700 | <<locked>> | 92% | 50,488 psi | 81% | 2224 fps | 95.6% |
| Accurate 4064 | <<locked>> | 80% | 31,082 psi | 50% | 1985 fps | 99.5% |
| Accurate 4350 | <<locked>> | 92% | 33,533 psi | 54% | 2090 fps | 95.4% |
| Accurate LT-30 | <<locked>> | 80% | 49,661 psi | 80% | 2133 fps | 100% |
| Accurate LT-32 | <<locked>> | 80% | 50,053 psi | 80% | 2152 fps | 100% |
| ADI AR 2206H | <<locked>> | 80% | 37,507 psi | 60% | 2083 fps | 97.8% |
| ADI AR 2208 | <<locked>> | 80% | 31,995 psi | 51% | 1962 fps | 95.3% |
| ADI AR 2219 | <<locked>> | 80% | 49,443 psi | 79% | 2231 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 80% | 39,595 psi | 63% | 2093 fps | 99.1% |
| Alliant AR-Comp | <<locked>> | 80% | 38,377 psi | 62% | 2087 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 45,861 psi | 74% | 2254 fps | 99.6% |
| Alliant Power Pro 2000-MR | 43.2 gr | 80% | 33,649 psi | 54% | 2087 fps | 95.3% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 30,792 psi | 49% | 1975 fps | 96.8% |
| Alliant Reloder-10x | <<locked>> | 80% | 46,470 psi | 75% | 2146 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 33,431 psi | 54% | 2024 fps | 96.1% |
| Alliant Reloder-16 | <<locked>> | 92% | 35,041 psi | 56% | 2103 fps | 95.7% |
| Alliant Reloder-17 | <<locked>> | 84% | 30,385 psi | 49% | 2028 fps | 95.7% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 48,414 psi | 78% | 2136 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 36,405 psi | 58% | 2083 fps | 96.4% |
| Bofors RP3 | <<locked>> | 80% | 29,834 psi | 48% | 1972 fps | 96.6% |
| Bofors RP7 | <<locked>> | 96% | 46,412 psi | 74% | 2205 fps | 95% |
| Hodgdon Benchmark | <<locked>> | 80% | 41,756 psi | 67% | 2090 fps | 99.7% |
| Hodgdon BL-C2 | <<locked>> | 80% | 37,333 psi | 60% | 2106 fps | 99.2% |
| Hodgdon CFE223 | <<locked>> | 80% | 41,162 psi | 66% | 2215 fps | 98.2% |
| Hodgdon H322 | <<locked>> | 80% | 45,121 psi | 72% | 2172 fps | 100% |
| Hodgdon H335 | <<locked>> | 80% | 45,614 psi | 73% | 2195 fps | 100% |
| Hodgdon H380 | <<locked>> | 84% | 35,549 psi | 57% | 2064 fps | 95.3% |
| Hodgdon H414 | <<locked>> | 98% | 45,237 psi | 73% | 2274 fps | 95.6% |
| Hodgdon H4350 | <<locked>> | 98% | 49,893 psi | 80% | 2290 fps | 95.1% |
| Hodgdon H4895 | <<locked>> | 80% | 37,797 psi | 61% | 2093 fps | 98.4% |
| Hodgdon Hybrid 100V | <<locked>> | 90% | 29,979 psi | 48% | 1975 fps | 95.6% |
| Hodgdon LEVERevolution | 42.4 gr | 80% | 33,692 psi | 54% | 2064 fps | 97.8% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,672 psi | 41% | 1207 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 36,318 psi | 58% | 2054 fps | 97.9% |
| IMR 3031 | <<locked>> | 80% | 36,680 psi | 59% | 2093 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 33,489 psi | 54% | 1988 fps | 96.1% |
| IMR 4166 Enduron | <<locked>> | 88% | 46,557 psi | 75% | 2178 fps | 95.7% |
| IMR 4198 | <<locked>> | 80% | 47,384 psi | 76% | 2116 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 94% | 45,643 psi | 73% | 2195 fps | 95.4% |
| IMR 4831 | <<locked>> | 92% | 32,909 psi | 53% | 2057 fps | 95.2% |
| IMR 4895 | <<locked>> | 80% | 34,200 psi | 55% | 2051 fps | 97.1% |
| IMR 8208 XBR | <<locked>> | 80% | 39,595 psi | 63% | 2093 fps | 99.1% |
| Lovex D073.5 | <<locked>> | 80% | 43,830 psi | 70% | 2159 fps | 99.9% |
| Lovex D073.6 | <<locked>> | 80% | 35,549 psi | 57% | 2064 fps | 99.6% |
| Lovex S060 | <<locked>> | 80% | 38,435 psi | 62% | 2037 fps | 98% |
| Lovex S062 | <<locked>> | 80% | 33,054 psi | 53% | 1991 fps | 97.9% |
| Lovex S065 | <<locked>> | 92% | 39,015 psi | 63% | 2100 fps | 95.4% |
| Lovex S070 | <<locked>> | 98% | 44,541 psi | 71% | 2208 fps | 95.6% |
| Norma 200 | <<locked>> | 80% | 52,141 psi | 84% | 2192 fps | 100% |
| Norma 201 | <<locked>> | 80% | 36,608 psi | 59% | 2044 fps | 98.7% |
| Norma 202 | <<locked>> | 80% | 36,695 psi | 59% | 2057 fps | 99.9% |
| Norma 203B | <<locked>> | 80% | 32,793 psi | 53% | 2018 fps | 96.5% |
| Norma URP | <<locked>> | 92% | 34,548 psi | 55% | 2090 fps | 95.4% |
| Ramshot Big Game | <<locked>> | 80% | 32,169 psi | 52% | 2021 fps | 95.9% |
| Ramshot Hunter | <<locked>> | 98% | 41,350 psi | 66% | 2215 fps | 95.4% |
| Ramshot TAC | <<locked>> | 80% | 39,233 psi | 63% | 2090 fps | 95.6% |
| Ramshot Wild Boar | <<locked>> | 80% | 38,261 psi | 61% | 2106 fps | 97.9% |
| Ramshot X-Terminator | <<locked>> | 80% | 42,772 psi | 69% | 2133 fps | 98.7% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 25,686 psi | 41% | 1234 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 44,527 psi | 71% | 2165 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 88% | 41,452 psi | 66% | 2139 fps | 95.2% |
| ReloadSwiss RS 52 | 41.9 gr | 80% | 34,389 psi | 55% | 2100 fps | 96.4% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 28,500 psi | 46% | 1991 fps | 97.5% |
| ReloadSwiss RS 62 | <<locked>> | 94% | 36,245 psi | 58% | 2152 fps | 95.8% |
| ReloadSwiss RS 70 | <<locked>> | 96% | 40,001 psi | 64% | 2211 fps | 95.8% |
| Rottweil R 901 | <<locked>> | 80% | 40,074 psi | 64% | 2080 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 34,751 psi | 56% | 2005 fps | 98.3% |
| Rottweil R 903 | <<locked>> | 80% | 28,050 psi | 45% | 1926 fps | 95.5% |
| Rottweil R 907 | <<locked>> | 96% | 46,412 psi | 74% | 2205 fps | 95% |
| Shooters World Long Rifle | <<locked>> | 92% | 39,015 psi | 63% | 2100 fps | 95.4% |
| Shooters World Match Rifle | <<locked>> | 80% | 35,549 psi | 57% | 2064 fps | 99.6% |
| Shooters World Precision | <<locked>> | 80% | 33,054 psi | 53% | 1991 fps | 97.9% |
| Shooters World SW4350 | <<locked>> | 98% | 44,541 psi | 71% | 2208 fps | 95.6% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 46,905 psi | 75% | 2175 fps | 99.7% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 53,577 psi | 86% | 1962 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 49,530 psi | 79% | 2238 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 31,459 psi | 50% | 2011 fps | 95.7% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 47,413 psi | 76% | 2162 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 37,043 psi | 59% | 2064 fps | 95.6% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 36,027 psi | 58% | 2057 fps | 97.4% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 38,566 psi | 62% | 2018 fps | 99.9% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 31,546 psi | 51% | 1909 fps | 99.7% |
| SNPE Vectan Tubal 7000 | <<locked>> | 96% | 43,903 psi | 70% | 2146 fps | 95.2% |
| Somchem S321 | <<locked>> | 80% | 42,322 psi | 68% | 2159 fps | 99.6% |
| Somchem S335 | <<locked>> | 80% | 37,869 psi | 61% | 2021 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 37,043 psi | 59% | 2070 fps | 97.6% |
| Somchem S355 | <<locked>> | 80% | 29,356 psi | 47% | 1936 fps | 95.8% |
| Somchem S365 | <<locked>> | 86% | 25,469 psi | 41% | 1916 fps | 95% |
| Vihtavuori N130 | <<locked>> | 80% | 43,830 psi | 70% | 2073 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 38,740 psi | 62% | 2018 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 33,823 psi | 54% | 2001 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 34,635 psi | 56% | 2005 fps | 99.8% |
| Vihtavuori N150 | <<locked>> | 80% | 27,717 psi | 44% | 1886 fps | 96.7% |
| Vihtavuori N160 | <<locked>> | 90% | 34,098 psi | 55% | 2051 fps | 95.1% |
| Vihtavuori N530 | <<locked>> | 80% | 39,320 psi | 63% | 2087 fps | 99.2% |
| Vihtavuori N540 | <<locked>> | 80% | 33,344 psi | 53% | 1998 fps | 99.5% |
| Vihtavuori N550 | <<locked>> | 92% | 35,549 psi | 57% | 2100 fps | 95.5% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 30,429 psi | 49% | 1952 fps | 95.8% |
| Winchester 748 | <<locked>> | 80% | 38,334 psi | 61% | 2123 fps | 99.5% |
| Winchester 760 | <<locked>> | 98% | 45,556 psi | 73% | 2277 fps | 95.7% |
| Winchester StaBALL Match | <<locked>> | 80% | 35,128 psi | 56% | 2060 fps | 97.8% |
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 115 powders for 8.5 x 63 loaded with the .338 | 260gr | CutEdge Maximus. ReloadSwiss RS 60 delivers the highest muzzle velocity at 2,454 fps; across all powders the maximum-charge window runs from 1,352 fps to 2,454 fps. Accurate 3100 gives the best case fill at 100 %, and 115 of the 115 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (430 MPa), the top charges use 44–90 %, leaving at least 10 % headroom. The 260.0 gr projectile in 0.338" calls for a 1:11.0 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 8.5 x 63 with the .338 | 260gr | CutEdge Maximus they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate 3100, Alliant Reloder-26, IMR 4350 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.