Load Specifications
Load data in caliber .277 Fury Commercial with .277 | 154gr | Remington SP Extended-Range bullet and 98 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Reloder-17, ReloadSwiss RS 60 and Alliant Power Pro 2000-MR.
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: 20"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2015 | <<locked>> | 84% | 54,636 psi | 87% | 2431 fps | 100% |
| Accurate 2460 | <<locked>> | 82% | 56,579 psi | 90% | 2500 fps | 100% |
| Accurate 2495 | <<locked>> | 90% | 56,420 psi | 89% | 2493 fps | 100% |
| Accurate 2520 | <<locked>> | 86% | 56,782 psi | 90% | 2543 fps | 100% |
| Accurate 2700 | <<locked>> | 94% | 56,724 psi | 90% | 2497 fps | 96.5% |
| Accurate 4064 | <<locked>> | 92% | 56,405 psi | 89% | 2533 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 56,144 psi | 89% | 2608 fps | 99.3% |
| ADI AR 2206H | <<locked>> | 88% | 56,956 psi | 90% | 2562 fps | 99.9% |
| ADI AR 2208 | <<locked>> | 92% | 54,563 psi | 86% | 2516 fps | 99.5% |
| ADI Benchmark 8208 | <<locked>> | 86% | 55,941 psi | 89% | 2516 fps | 100% |
| Alliant AR-Comp | <<locked>> | 84% | 53,417 psi | 85% | 2457 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 90% | 56,521 psi | 90% | 2667 fps | 99.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 92% | 54,346 psi | 86% | 2533 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 90% | 55,013 psi | 87% | 2552 fps | 99.6% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 53,737 psi | 85% | 2605 fps | 99.4% |
| Alliant Reloder-17 | <<locked>> | 96% | 55,042 psi | 87% | 2644 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 38,435 psi | 61% | 2362 fps | 97.7% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 42,917 psi | 68% | 2503 fps | 96.6% |
| Baschieri & Pellagri 107 | <<locked>> | 88% | 56,768 psi | 90% | 2575 fps | 99.5% |
| Bofors RP3 | <<locked>> | 92% | 55,187 psi | 87% | 2552 fps | 100% |
| Bofors RP7 | <<locked>> | 96% | 55,201 psi | 87% | 2520 fps | 96.5% |
| Hodgdon Benchmark | <<locked>> | 84% | 54,607 psi | 87% | 2461 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 86% | 55,230 psi | 88% | 2546 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 82% | 53,432 psi | 85% | 2579 fps | 99.5% |
| Hodgdon H322 | <<locked>> | 84% | 56,014 psi | 89% | 2503 fps | 100% |
| Hodgdon H380 | <<locked>> | 92% | 56,014 psi | 89% | 2559 fps | 99% |
| Hodgdon H414 | <<locked>> | 94% | 53,301 psi | 84% | 2572 fps | 96.9% |
| Hodgdon H4895 | <<locked>> | 86% | 54,056 psi | 86% | 2523 fps | 99.9% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 49,966 psi | 79% | 2497 fps | 99.7% |
| Hodgdon LEVERevolution | <<locked>> | 92% | 56,971 psi | 90% | 2602 fps | 100% |
| Hodgdon Superformance | <<locked>> | 98% | 56,362 psi | 89% | 2641 fps | 96.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,520 psi | 56% | 1532 fps | 100% |
| Hodgdon VARGET | <<locked>> | 90% | 54,244 psi | 86% | 2510 fps | 99.9% |
| IMR 3031 | <<locked>> | 90% | 56,028 psi | 89% | 2536 fps | 100% |
| IMR 4064 | <<locked>> | 94% | 56,739 psi | 90% | 2536 fps | 99.7% |
| IMR 4166 Enduron | <<locked>> | 94% | 56,014 psi | 89% | 2507 fps | 97.3% |
| IMR 4350ᴾ | <<locked>> | 100% | 55,448 psi | 88% | 2546 fps | 96.6% |
| IMR 4451 Enduron | <<locked>> | 94% | 53,737 psi | 85% | 2500 fps | 96.7% |
| IMR 4831ᴾ | <<locked>> | 100% | 47,210 psi | 75% | 2464 fps | 98.2% |
| IMR 4895 | <<locked>> | 90% | 56,420 psi | 89% | 2579 fps | 99.9% |
| IMR 8208 XBR | <<locked>> | 86% | 55,941 psi | 89% | 2516 fps | 100% |
| Lovex D073.5 | <<locked>> | 82% | 56,318 psi | 89% | 2507 fps | 100% |
| Lovex D073.6 | <<locked>> | 88% | 56,782 psi | 90% | 2543 fps | 100% |
| Lovex S060 | <<locked>> | 88% | 56,826 psi | 90% | 2500 fps | 99.9% |
| Lovex S062 | <<locked>> | 90% | 53,809 psi | 85% | 2497 fps | 100% |
| Lovex S065 | <<locked>> | 98% | 56,202 psi | 89% | 2539 fps | 98.4% |
| Lovex S070 | <<locked>> | 98% | 53,722 psi | 85% | 2523 fps | 97.1% |
| Norma 201 | <<locked>> | 88% | 55,898 psi | 89% | 2513 fps | 100% |
| Norma 202 | <<locked>> | 88% | 56,376 psi | 89% | 2516 fps | 100% |
| Norma 203B | <<locked>> | 90% | 54,244 psi | 86% | 2539 fps | 99.8% |
| Norma URPᴾ | <<locked>> | 100% | 55,056 psi | 87% | 2595 fps | 99.2% |
| Ramshot Big Game | <<locked>> | 90% | 54,534 psi | 86% | 2562 fps | 99.7% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 54,056 psi | 86% | 2592 fps | 97.8% |
| Ramshot TAC | <<locked>> | 86% | 56,202 psi | 89% | 2533 fps | 98.6% |
| Ramshot Wild Boar | <<locked>> | 86% | 56,086 psi | 89% | 2556 fps | 99.8% |
| Ramshot X-Terminator | <<locked>> | 82% | 53,417 psi | 85% | 2474 fps | 99.6% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,027 psi | 57% | 1568 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 82% | 55,753 psi | 88% | 2503 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 92% | 56,536 psi | 90% | 2546 fps | 97.9% |
| ReloadSwiss RS 52 | <<locked>> | 88% | 55,535 psi | 88% | 2612 fps | 99.6% |
| ReloadSwiss RS 60 | <<locked>> | 94% | 54,969 psi | 87% | 2648 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 55,579 psi | 88% | 2625 fps | 99.1% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 55,434 psi | 88% | 2651 fps | 98.9% |
| Rottweil R 901 | <<locked>> | 86% | 56,840 psi | 90% | 2497 fps | 100% |
| Rottweil R 902 | <<locked>> | 90% | 56,391 psi | 89% | 2513 fps | 100% |
| Rottweil R 903 | <<locked>> | 94% | 55,056 psi | 87% | 2543 fps | 100% |
| Rottweil R 907 | <<locked>> | 96% | 55,201 psi | 87% | 2520 fps | 96.5% |
| Shooters World Long Rifle | <<locked>> | 98% | 56,202 psi | 89% | 2539 fps | 98.4% |
| Shooters World Match Rifle | <<locked>> | 88% | 56,782 psi | 90% | 2543 fps | 100% |
| Shooters World Precision | <<locked>> | 90% | 53,809 psi | 85% | 2497 fps | 100% |
| Shooters World SW4350 | <<locked>> | 98% | 53,722 psi | 85% | 2523 fps | 97.1% |
| SNPE Vectan SP 11 | <<locked>> | 94% | 56,666 psi | 90% | 2598 fps | 99.9% |
| SNPE Vectan SP 7 | <<locked>> | 86% | 54,665 psi | 87% | 2516 fps | 98.8% |
| SNPE Vectan SP 9 | <<locked>> | 88% | 55,390 psi | 88% | 2536 fps | 99.8% |
| SNPE Vectan Tubal 3000 | <<locked>> | 86% | 53,896 psi | 85% | 2418 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 92% | 54,215 psi | 86% | 2421 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 98% | 56,869 psi | 90% | 2503 fps | 97.3% |
| Somchem S321 | <<locked>> | 82% | 53,592 psi | 85% | 2500 fps | 100% |
| Somchem S335 | <<locked>> | 88% | 56,768 psi | 90% | 2461 fps | 100% |
| Somchem S341 | <<locked>> | 86% | 54,476 psi | 86% | 2513 fps | 99.7% |
| Somchem S355 | <<locked>> | 94% | 55,259 psi | 88% | 2539 fps | 99.9% |
| Somchem S365ᴾ | <<locked>> | 100% | 49,647 psi | 79% | 2552 fps | 100% |
| Unknown powder | <<locked>> | 98% | 56,260 psi | 89% | 2602 fps | 98.9% |
| Vihtavuori N130 | <<locked>> | 82% | 53,722 psi | 85% | 2385 fps | 100% |
| Vihtavuori N133 | <<locked>> | 86% | 54,143 psi | 86% | 2408 fps | 100% |
| Vihtavuori N135 | <<locked>> | 90% | 55,854 psi | 89% | 2480 fps | 100% |
| Vihtavuori N140 | <<locked>> | 90% | 56,898 psi | 90% | 2500 fps | 100% |
| Vihtavuori N150 | <<locked>> | 96% | 56,550 psi | 90% | 2523 fps | 100% |
| Vihtavuori N160 | <<locked>> | 98% | 54,215 psi | 86% | 2546 fps | 99% |
| Vihtavuori N530 | <<locked>> | 86% | 56,434 psi | 89% | 2516 fps | 100% |
| Vihtavuori N540 | <<locked>> | 90% | 54,911 psi | 87% | 2493 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 56,782 psi | 90% | 2598 fps | 99.2% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 41,916 psi | 66% | 2431 fps | 97.6% |
| Winchester 6.5 StaBALL | <<locked>> | 98% | 54,302 psi | 86% | 2530 fps | 100% |
| Winchester 748 | <<locked>> | 82% | 53,287 psi | 84% | 2520 fps | 100% |
| Winchester 760 | <<locked>> | 94% | 53,301 psi | 84% | 2572 fps | 96.9% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 34,447 psi | 55% | 2346 fps | 96.9% |
| Winchester StaBALL Match | <<locked>> | 82% | 56,579 psi | 90% | 2562 fps | 100% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 20"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2015 | <<locked>> | 80% | 48,399 psi | 77% | 2349 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 52,736 psi | 84% | 2448 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 41,118 psi | 65% | 2280 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 46,441 psi | 74% | 2398 fps | 100% |
| Accurate 2700 | <<locked>> | 90% | 50,111 psi | 79% | 2402 fps | 95.1% |
| Accurate 4064 | <<locked>> | 80% | 38,870 psi | 62% | 2270 fps | 99.9% |
| Accurate 4350 | <<locked>> | 88% | 37,159 psi | 59% | 2297 fps | 95.5% |
| ADI AR 2206H | <<locked>> | 80% | 44,367 psi | 70% | 2369 fps | 98.6% |
| ADI AR 2208 | <<locked>> | 80% | 37,869 psi | 60% | 2234 fps | 96.4% |
| ADI Benchmark 8208 | <<locked>> | 80% | 46,398 psi | 74% | 2375 fps | 99.6% |
| Alliant AR-Comp | <<locked>> | 80% | 46,978 psi | 74% | 2372 fps | 100% |
| Alliant Power Pro 2000-MR | 38.2 gr | 80% | 40,437 psi | 64% | 2392 fps | 96.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 37,565 psi | 60% | 2257 fps | 97.9% |
| Alliant Reloder-15 | <<locked>> | 80% | 40,118 psi | 64% | 2306 fps | 97.2% |
| Alliant Reloder-16 | <<locked>> | 88% | 37,289 psi | 59% | 2306 fps | 95.6% |
| Alliant Reloder-17 | 37.6 gr | 80% | 32,314 psi | 51% | 2215 fps | 95.4% |
| Alliant Reloder-23 | <<locked>> | 94% | 32,068 psi | 51% | 2215 fps | 95.1% |
| Alliant Reloder-26 | <<locked>> | 98% | 39,914 psi | 63% | 2441 fps | 95.5% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 43,714 psi | 69% | 2375 fps | 97.6% |
| Bofors RP3 | <<locked>> | 80% | 36,970 psi | 59% | 2254 fps | 97.9% |
| Bofors RP7 | <<locked>> | 92% | 48,979 psi | 78% | 2425 fps | 95.1% |
| Hodgdon Benchmark | <<locked>> | 80% | 48,298 psi | 77% | 2372 fps | 99.9% |
| Hodgdon BL-C2 | <<locked>> | 80% | 45,382 psi | 72% | 2398 fps | 99.8% |
| Hodgdon CFE223 | <<locked>> | 80% | 50,111 psi | 79% | 2530 fps | 99.1% |
| Hodgdon H322 | <<locked>> | 80% | 49,501 psi | 78% | 2415 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 37,840 psi | 60% | 2254 fps | 95.1% |
| Hodgdon H414 | <<locked>> | 90% | 46,485 psi | 74% | 2464 fps | 95.2% |
| Hodgdon H4895 | <<locked>> | 80% | 44,759 psi | 71% | 2379 fps | 99.1% |
| Hodgdon Hybrid 100V | <<locked>> | 86% | 32,242 psi | 51% | 2169 fps | 95.6% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 38,392 psi | 61% | 2306 fps | 98.2% |
| Hodgdon Superformance | <<locked>> | 94% | 48,776 psi | 77% | 2523 fps | 95.1% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,513 psi | 42% | 1368 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 40,016 psi | 63% | 2280 fps | 98.2% |
| IMR 3031 | <<locked>> | 80% | 40,915 psi | 65% | 2320 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 37,275 psi | 59% | 2215 fps | 96.5% |
| IMR 4166 Enduron | <<locked>> | 88% | 47,195 psi | 75% | 2372 fps | 95.4% |
| IMR 4350 | <<locked>> | 96% | 48,965 psi | 78% | 2448 fps | 95.1% |
| IMR 4451 Enduron | <<locked>> | 90% | 47,514 psi | 75% | 2405 fps | 95.3% |
| IMR 4831 | <<locked>> | 92% | 36,854 psi | 58% | 2277 fps | 95.5% |
| IMR 4895 | <<locked>> | 80% | 41,075 psi | 65% | 2333 fps | 98% |
| IMR 8208 XBR | <<locked>> | 80% | 46,398 psi | 74% | 2375 fps | 99.6% |
| Lovex D073.5 | <<locked>> | 80% | 52,518 psi | 83% | 2457 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 43,497 psi | 69% | 2352 fps | 99.9% |
| Lovex S060 | <<locked>> | 80% | 44,628 psi | 71% | 2316 fps | 98.7% |
| Lovex S062 | <<locked>> | 80% | 39,769 psi | 63% | 2270 fps | 98.8% |
| Lovex S065 | <<locked>> | 88% | 41,713 psi | 66% | 2310 fps | 95.4% |
| Lovex S070 | <<locked>> | 92% | 44,802 psi | 71% | 2382 fps | 95% |
| Norma 201 | <<locked>> | 80% | 43,714 psi | 69% | 2329 fps | 99.4% |
| Norma 202 | <<locked>> | 80% | 44,034 psi | 70% | 2339 fps | 100% |
| Norma 203B | <<locked>> | 80% | 39,479 psi | 63% | 2297 fps | 97.6% |
| Norma URP | <<locked>> | 88% | 37,434 psi | 59% | 2297 fps | 95.4% |
| Ramshot Big Game | <<locked>> | 80% | 39,102 psi | 62% | 2313 fps | 97.3% |
| Ramshot Hunter | <<locked>> | 94% | 44,425 psi | 70% | 2434 fps | 95.6% |
| Ramshot TAC | <<locked>> | 80% | 46,224 psi | 73% | 2379 fps | 96.8% |
| Ramshot Wild Boar | <<locked>> | 80% | 45,905 psi | 73% | 2402 fps | 98.8% |
| Ramshot X-Terminator | <<locked>> | 80% | 50,270 psi | 80% | 2428 fps | 99.3% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,774 psi | 42% | 1398 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 51,953 psi | 82% | 2451 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 84% | 43,511 psi | 69% | 2343 fps | 95% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 42,221 psi | 67% | 2402 fps | 97.7% |
| ReloadSwiss RS 60 | 37.6 gr | 80% | 34,374 psi | 54% | 2277 fps | 98.7% |
| ReloadSwiss RS 62 | <<locked>> | 90% | 39,378 psi | 62% | 2362 fps | 95.8% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 42,366 psi | 67% | 2428 fps | 95.9% |
| Rottweil R 901 | <<locked>> | 80% | 47,442 psi | 75% | 2365 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 41,669 psi | 66% | 2287 fps | 99.1% |
| Rottweil R 903 | <<locked>> | 80% | 34,751 psi | 55% | 2201 fps | 96.9% |
| Rottweil R 907 | <<locked>> | 92% | 48,979 psi | 78% | 2425 fps | 95.1% |
| Shooters World Long Rifle | <<locked>> | 88% | 41,713 psi | 66% | 2310 fps | 95.4% |
| Shooters World Match Rifle | <<locked>> | 80% | 43,497 psi | 69% | 2352 fps | 99.9% |
| Shooters World Precision | <<locked>> | 80% | 39,769 psi | 63% | 2270 fps | 98.8% |
| Shooters World SW4350 | <<locked>> | 92% | 44,802 psi | 71% | 2382 fps | 95% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 35,752 psi | 57% | 2247 fps | 96.3% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 44,541 psi | 71% | 2356 fps | 97% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 42,931 psi | 68% | 2343 fps | 98.3% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 45,034 psi | 71% | 2290 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 37,434 psi | 59% | 2172 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 92% | 46,760 psi | 74% | 2356 fps | 95.2% |
| Somchem S321 | <<locked>> | 80% | 50,401 psi | 80% | 2454 fps | 99.9% |
| Somchem S335 | <<locked>> | 80% | 44,686 psi | 71% | 2293 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 44,498 psi | 71% | 2359 fps | 98.6% |
| Somchem S355 | <<locked>> | 80% | 35,853 psi | 57% | 2215 fps | 97.1% |
| Somchem S365 | <<locked>> | 84% | 29,399 psi | 47% | 2149 fps | 95.9% |
| Unknown powder | <<locked>> | 88% | 40,683 psi | 64% | 2349 fps | 95.7% |
| Vihtavuori N130 | <<locked>> | 80% | 50,763 psi | 80% | 2346 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 45,324 psi | 72% | 2287 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 41,017 psi | 65% | 2274 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 41,394 psi | 66% | 2277 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 33,866 psi | 54% | 2152 fps | 97.8% |
| Vihtavuori N160 | <<locked>> | 86% | 36,622 psi | 58% | 2251 fps | 95.1% |
| Vihtavuori N530 | <<locked>> | 80% | 46,528 psi | 74% | 2375 fps | 99.7% |
| Vihtavuori N540 | <<locked>> | 80% | 39,943 psi | 63% | 2267 fps | 99.8% |
| Vihtavuori N550 | <<locked>> | 88% | 38,580 psi | 61% | 2303 fps | 95.5% |
| Vihtavuori N555 | <<locked>> | 94% | 34,563 psi | 55% | 2283 fps | 95.3% |
| Winchester 6.5 StaBALL | <<locked>> | 82% | 32,039 psi | 51% | 2133 fps | 95.6% |
| Winchester 748 | <<locked>> | 80% | 49,995 psi | 79% | 2474 fps | 100% |
| Winchester 760 | <<locked>> | 90% | 46,485 psi | 74% | 2464 fps | 95.2% |
| Winchester StaBALL HD | <<locked>> | 98% | 32,155 psi | 51% | 2283 fps | 95.5% |
| Winchester StaBALL Match | <<locked>> | 80% | 52,765 psi | 84% | 2510 fps | 99.8% |
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 98 powders for .277 Fury Commercial loaded with the .277 | 154gr | Remington SP Extended-Range. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 2,667 fps; across all powders the maximum-charge window runs from 1,532 fps to 2,667 fps. Accurate 4350 gives the best case fill at 100 %, and 98 of the 98 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (435 MPa), the top charges use 55–90 %, leaving at least 10 % headroom. The 154.0 gr projectile in 0.277" calls for a 1:15.5 twist; slower twists will usually not stabilise this weight. Accurate 4350, Alliant Reloder-16, Alliant Reloder-23 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 Reloder-17, ReloadSwiss RS 60, Alliant Power Pro 2000-MR rank at the top here: for .277 Fury Commercial with the .277 | 154gr | Remington SP Extended-Range 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.