Load Specifications
Load data in caliber .277 Fury Commercial with .277 | 150gr | Barnes MRX BT bullet and 94 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, Hodgdon CFE223 and ReloadSwiss RS 52.
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.
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Max Load - Barrel Length: 20"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2015 | <<locked>> | 90% | 55,767 psi | 88% | 2444 fps | 100% |
| Accurate 2200 | <<locked>> | 82% | 56,289 psi | 89% | 2533 fps | 98.9% |
| Accurate 2460 | <<locked>> | 86% | 54,331 psi | 86% | 2467 fps | 100% |
| Accurate 2495 | <<locked>> | 96% | 56,246 psi | 89% | 2497 fps | 100% |
| Accurate 2520 | <<locked>> | 90% | 55,985 psi | 89% | 2523 fps | 100% |
| Accurate 4064 | <<locked>> | 98% | 55,985 psi | 89% | 2533 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 44,686 psi | 71% | 2434 fps | 96.5% |
| Accurate LT-30 | <<locked>> | 84% | 56,159 psi | 89% | 2402 fps | 100% |
| Accurate LT-32 | <<locked>> | 84% | 56,608 psi | 90% | 2425 fps | 100% |
| ADI AR 2206H | <<locked>> | 92% | 54,723 psi | 87% | 2520 fps | 99.3% |
| ADI AR 2208 | <<locked>> | 98% | 55,999 psi | 89% | 2520 fps | 98.9% |
| ADI AR 2219 | <<locked>> | 84% | 56,797 psi | 90% | 2510 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 90% | 54,505 psi | 86% | 2487 fps | 99.8% |
| Alliant AR-Comp | <<locked>> | 90% | 53,998 psi | 86% | 2474 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 86% | 55,985 psi | 89% | 2579 fps | 99.7% |
| Alliant Power Pro 2000-MR | <<locked>> | 94% | 54,607 psi | 87% | 2621 fps | 98.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 98% | 55,042 psi | 87% | 2536 fps | 99.7% |
| Alliant Reloder-10x | <<locked>> | 86% | 55,999 psi | 89% | 2454 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 96% | 55,840 psi | 89% | 2556 fps | 99.1% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 45,179 psi | 72% | 2448 fps | 96.7% |
| Alliant Reloder-17ᴾ | <<locked>> | 100% | 51,909 psi | 82% | 2585 fps | 99.4% |
| Baschieri & Pellagri 106 | <<locked>> | 84% | 55,013 psi | 87% | 2402 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 92% | 54,665 psi | 87% | 2536 fps | 98.5% |
| Bofors RP3 | <<locked>> | 98% | 55,085 psi | 87% | 2549 fps | 99.8% |
| Hodgdon Benchmark | <<locked>> | 90% | 56,507 psi | 90% | 2474 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 92% | 56,579 psi | 90% | 2559 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 88% | 54,897 psi | 87% | 2595 fps | 99% |
| Hodgdon H322 | <<locked>> | 86% | 54,955 psi | 87% | 2487 fps | 100% |
| Hodgdon H335 | <<locked>> | 86% | 56,246 psi | 89% | 2513 fps | 100% |
| Hodgdon H380 | <<locked>> | 96% | 53,200 psi | 84% | 2507 fps | 97.7% |
| Hodgdon H4895 | <<locked>> | 92% | 55,187 psi | 87% | 2530 fps | 99.6% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 41,046 psi | 65% | 2343 fps | 97.3% |
| Hodgdon LEVERevolution | <<locked>> | 94% | 54,070 psi | 86% | 2562 fps | 99.7% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,592 psi | 55% | 1493 fps | 100% |
| Hodgdon VARGET | <<locked>> | 94% | 56,956 psi | 90% | 2539 fps | 99.7% |
| IMR 3031 | <<locked>> | 92% | 54,505 psi | 86% | 2523 fps | 100% |
| IMR 4064 | <<locked>> | 96% | 55,347 psi | 88% | 2503 fps | 99% |
| IMR 4166 Enduron | <<locked>> | 94% | 56,318 psi | 89% | 2487 fps | 96% |
| IMR 4198 | <<locked>> | 86% | 56,550 psi | 90% | 2418 fps | 100% |
| IMR 4831ᴾ | <<locked>> | 100% | 42,714 psi | 68% | 2385 fps | 96.1% |
| IMR 4895 | <<locked>> | 94% | 53,635 psi | 85% | 2536 fps | 99.2% |
| IMR 8208 XBR | <<locked>> | 90% | 54,505 psi | 86% | 2487 fps | 99.8% |
| Lovex D073.5 | <<locked>> | 86% | 54,433 psi | 86% | 2480 fps | 100% |
| Lovex D073.6 | <<locked>> | 92% | 53,563 psi | 85% | 2503 fps | 100% |
| Lovex S060 | <<locked>> | 92% | 55,434 psi | 88% | 2467 fps | 99.3% |
| Lovex S062 | <<locked>> | 96% | 54,621 psi | 87% | 2503 fps | 99.8% |
| Lovex S065ᴾ | <<locked>> | 100% | 50,111 psi | 79% | 2438 fps | 96.2% |
| Norma 200 | <<locked>> | 82% | 55,492 psi | 88% | 2425 fps | 100% |
| Norma 201 | <<locked>> | 94% | 56,753 psi | 90% | 2520 fps | 99.9% |
| Norma 202 | <<locked>> | 92% | 54,157 psi | 86% | 2487 fps | 100% |
| Norma 203B | <<locked>> | 96% | 54,897 psi | 87% | 2543 fps | 99.3% |
| Norma URPᴾ | <<locked>> | 100% | 45,107 psi | 71% | 2434 fps | 96.4% |
| Ramshot Big Game | <<locked>> | 96% | 55,608 psi | 88% | 2569 fps | 99.3% |
| Ramshot TAC | <<locked>> | 90% | 54,752 psi | 87% | 2497 fps | 97.3% |
| Ramshot Wild Boar | <<locked>> | 90% | 53,998 psi | 86% | 2516 fps | 99.2% |
| Ramshot X-Terminator | <<locked>> | 88% | 55,666 psi | 88% | 2490 fps | 99.2% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 34,650 psi | 55% | 1526 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 86% | 53,896 psi | 85% | 2474 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 96% | 53,969 psi | 86% | 2493 fps | 96.2% |
| ReloadSwiss RS 52 | <<locked>> | 94% | 55,840 psi | 89% | 2615 fps | 99.1% |
| ReloadSwiss RS 60ᴾ | <<locked>> | 100% | 55,535 psi | 88% | 2644 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 44,686 psi | 71% | 2454 fps | 96.1% |
| Rottweil R 901 | <<locked>> | 90% | 54,491 psi | 86% | 2464 fps | 100% |
| Rottweil R 902 | <<locked>> | 94% | 53,751 psi | 85% | 2470 fps | 99.7% |
| Rottweil R 903ᴾ | <<locked>> | 100% | 54,998 psi | 87% | 2539 fps | 99.6% |
| Shooters World Long Rifleᴾ | <<locked>> | 100% | 50,111 psi | 79% | 2438 fps | 96.2% |
| Shooters World Match Rifle | <<locked>> | 92% | 53,563 psi | 85% | 2503 fps | 100% |
| Shooters World Precision | <<locked>> | 96% | 54,621 psi | 87% | 2503 fps | 99.8% |
| Shooters World Tactical Rifle | <<locked>> | 84% | 54,186 psi | 86% | 2451 fps | 99.6% |
| SNPE Vectan BA6 1/2 | <<locked>> | 82% | 56,304 psi | 89% | 2178 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 84% | 57,072 psi | 90% | 2520 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 98% | 53,650 psi | 85% | 2549 fps | 99.1% |
| SNPE Vectan SP 3 | <<locked>> | 86% | 56,884 psi | 90% | 2470 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 92% | 56,521 psi | 90% | 2523 fps | 98.1% |
| SNPE Vectan SP 9 | <<locked>> | 94% | 56,681 psi | 90% | 2543 fps | 99.4% |
| SNPE Vectan Tubal 3000 | <<locked>> | 92% | 56,072 psi | 89% | 2434 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 98% | 55,434 psi | 88% | 2428 fps | 100% |
| Somchem S321 | <<locked>> | 88% | 55,477 psi | 88% | 2520 fps | 99.9% |
| Somchem S335 | <<locked>> | 92% | 54,955 psi | 87% | 2434 fps | 100% |
| Somchem S341 | <<locked>> | 92% | 55,912 psi | 89% | 2520 fps | 99.3% |
| Somchem S355ᴾ | <<locked>> | 100% | 55,361 psi | 88% | 2533 fps | 99.6% |
| Somchem S365ᴾ | <<locked>> | 100% | 39,987 psi | 63% | 2385 fps | 98.4% |
| Vihtavuori N130 | <<locked>> | 88% | 55,825 psi | 88% | 2408 fps | 100% |
| Vihtavuori N133 | <<locked>> | 92% | 55,985 psi | 89% | 2425 fps | 100% |
| Vihtavuori N135 | <<locked>> | 96% | 56,579 psi | 90% | 2493 fps | 100% |
| Vihtavuori N140 | <<locked>> | 94% | 54,360 psi | 86% | 2464 fps | 100% |
| Vihtavuori N150ᴾ | <<locked>> | 100% | 53,911 psi | 85% | 2480 fps | 99.9% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 47,543 psi | 75% | 2438 fps | 96.9% |
| Vihtavuori N530 | <<locked>> | 90% | 54,694 psi | 87% | 2484 fps | 99.8% |
| Vihtavuori N540 | <<locked>> | 96% | 55,840 psi | 89% | 2503 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 46,644 psi | 74% | 2441 fps | 96.5% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 48,776 psi | 77% | 2434 fps | 98.9% |
| Winchester 748 | <<locked>> | 90% | 53,983 psi | 86% | 2530 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 94% | 56,347 psi | 89% | 2552 fps | 99.7% |
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% | 40,640 psi | 64% | 2234 fps | 100% |
| Accurate 2200 | <<locked>> | 80% | 52,663 psi | 83% | 2480 fps | 98.5% |
| Accurate 2460 | <<locked>> | 80% | 44,251 psi | 70% | 2326 fps | 99.8% |
| Accurate 2495 | <<locked>> | 80% | 32,735 psi | 52% | 2142 fps | 99.9% |
| Accurate 2520 | <<locked>> | 80% | 39,392 psi | 62% | 2277 fps | 99.1% |
| Accurate 4064 | <<locked>> | 80% | 30,995 psi | 49% | 2123 fps | 98.1% |
| Accurate 4350 | <<locked>> | 98% | 41,539 psi | 66% | 2382 fps | 95.6% |
| Accurate LT-30 | <<locked>> | 80% | 49,763 psi | 79% | 2320 fps | 100% |
| Accurate LT-32 | <<locked>> | 80% | 50,154 psi | 79% | 2339 fps | 100% |
| ADI AR 2206H | <<locked>> | 80% | 37,434 psi | 59% | 2231 fps | 95.9% |
| ADI AR 2208 | <<locked>> | 86% | 38,638 psi | 61% | 2241 fps | 95.4% |
| ADI AR 2219 | <<locked>> | 80% | 49,269 psi | 78% | 2411 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 80% | 39,494 psi | 63% | 2251 fps | 97.8% |
| Alliant AR-Comp | <<locked>> | 80% | 38,551 psi | 61% | 2260 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 45,730 psi | 72% | 2425 fps | 98.6% |
| Alliant Power Pro 2000-MR | 36.1 gr | 86% | 41,408 psi | 66% | 2395 fps | 95.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 32,996 psi | 52% | 2162 fps | 95.4% |
| Alliant Reloder-10x | <<locked>> | 80% | 46,253 psi | 73% | 2326 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 84% | 38,072 psi | 60% | 2264 fps | 95.4% |
| Alliant Reloder-16 | <<locked>> | 98% | 42,366 psi | 67% | 2395 fps | 95.8% |
| Alliant Reloder-17 | <<locked>> | 88% | 34,882 psi | 55% | 2267 fps | 95% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 48,356 psi | 77% | 2316 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 39,073 psi | 62% | 2283 fps | 95% |
| Bofors RP3 | <<locked>> | 82% | 32,198 psi | 51% | 2156 fps | 95.2% |
| Hodgdon Benchmark | <<locked>> | 80% | 41,539 psi | 66% | 2251 fps | 98.7% |
| Hodgdon BL-C2 | <<locked>> | 80% | 37,594 psi | 60% | 2260 fps | 97.9% |
| Hodgdon CFE223 | 34.4 gr | 80% | 41,466 psi | 66% | 2379 fps | 96.4% |
| Hodgdon H322 | <<locked>> | 80% | 45,310 psi | 72% | 2352 fps | 100% |
| Hodgdon H335 | <<locked>> | 80% | 45,963 psi | 73% | 2372 fps | 100% |
| Hodgdon H380 | <<locked>> | 90% | 43,555 psi | 69% | 2356 fps | 95.5% |
| Hodgdon H4895 | <<locked>> | 80% | 37,666 psi | 60% | 2244 fps | 96.6% |
| Hodgdon Hybrid 100V | <<locked>> | 96% | 36,245 psi | 57% | 2247 fps | 95.7% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 33,649 psi | 53% | 2205 fps | 95.6% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,483 psi | 40% | 1329 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 36,419 psi | 58% | 2205 fps | 96.1% |
| IMR 3031 | <<locked>> | 80% | 36,854 psi | 58% | 2257 fps | 99.9% |
| IMR 4064 | <<locked>> | 84% | 37,956 psi | 60% | 2224 fps | 95.5% |
| IMR 4166 Enduron | <<locked>> | 92% | 52,881 psi | 84% | 2438 fps | 95.2% |
| IMR 4198 | <<locked>> | 80% | 47,471 psi | 75% | 2303 fps | 100% |
| IMR 4831 | <<locked>> | 98% | 40,248 psi | 64% | 2343 fps | 95.3% |
| IMR 4895 | <<locked>> | 82% | 36,463 psi | 58% | 2241 fps | 95.6% |
| IMR 8208 XBR | <<locked>> | 80% | 39,494 psi | 63% | 2251 fps | 97.8% |
| Lovex D073.5 | <<locked>> | 80% | 43,990 psi | 70% | 2326 fps | 99.3% |
| Lovex D073.6 | <<locked>> | 80% | 35,694 psi | 57% | 2215 fps | 98.4% |
| Lovex S060 | <<locked>> | 80% | 38,479 psi | 61% | 2195 fps | 96.3% |
| Lovex S062 | <<locked>> | 80% | 33,098 psi | 52% | 2136 fps | 95.9% |
| Lovex S065 | <<locked>> | 98% | 47,398 psi | 75% | 2395 fps | 95.5% |
| Norma 200 | <<locked>> | 80% | 52,011 psi | 82% | 2382 fps | 100% |
| Norma 201 | <<locked>> | 80% | 36,506 psi | 58% | 2195 fps | 97.1% |
| Norma 202 | <<locked>> | 80% | 36,753 psi | 58% | 2211 fps | 99.1% |
| Norma 203B | <<locked>> | 82% | 34,983 psi | 55% | 2205 fps | 95% |
| Norma URP | <<locked>> | 98% | 42,206 psi | 67% | 2385 fps | 95.6% |
| Ramshot Big Game | <<locked>> | 84% | 37,086 psi | 59% | 2267 fps | 95.4% |
| Ramshot TAC | <<locked>> | 84% | 45,107 psi | 71% | 2346 fps | 95.2% |
| Ramshot Wild Boar | <<locked>> | 80% | 38,537 psi | 61% | 2264 fps | 96.1% |
| Ramshot X-Terminator | <<locked>> | 80% | 42,743 psi | 68% | 2293 fps | 97.1% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 25,628 psi | 41% | 1358 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 44,353 psi | 70% | 2333 fps | 99.5% |
| ReloadSwiss RS 50 | <<locked>> | 94% | 50,618 psi | 80% | 2444 fps | 95.5% |
| ReloadSwiss RS 52 | 33.4 gr | 82% | 36,999 psi | 59% | 2300 fps | 95% |
| ReloadSwiss RS 60 | <<locked>> | 82% | 30,458 psi | 48% | 2165 fps | 95.7% |
| ReloadSwiss RS 62 | <<locked>> | 98% | 41,829 psi | 66% | 2405 fps | 95.2% |
| Rottweil R 901 | <<locked>> | 80% | 40,089 psi | 64% | 2244 fps | 99.4% |
| Rottweil R 902 | <<locked>> | 80% | 34,824 psi | 55% | 2156 fps | 96.5% |
| Rottweil R 903 | <<locked>> | 86% | 34,403 psi | 55% | 2198 fps | 95.7% |
| Shooters World Long Rifle | <<locked>> | 98% | 47,398 psi | 75% | 2395 fps | 95.5% |
| Shooters World Match Rifle | <<locked>> | 80% | 35,694 psi | 57% | 2215 fps | 98.4% |
| Shooters World Precision | <<locked>> | 80% | 33,098 psi | 52% | 2136 fps | 95.9% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 47,166 psi | 75% | 2352 fps | 98.9% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 53,650 psi | 85% | 2149 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 49,893 psi | 79% | 2425 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 86% | 36,071 psi | 57% | 2251 fps | 95.1% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 47,268 psi | 75% | 2346 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 84% | 42,757 psi | 68% | 2316 fps | 95.2% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 35,940 psi | 57% | 2201 fps | 95.3% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 38,450 psi | 61% | 2175 fps | 99.3% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 31,473 psi | 50% | 2054 fps | 98.7% |
| Somchem S321 | <<locked>> | 80% | 42,264 psi | 67% | 2320 fps | 98.6% |
| Somchem S335 | <<locked>> | 80% | 37,768 psi | 60% | 2178 fps | 99.6% |
| Somchem S341 | <<locked>> | 80% | 36,985 psi | 59% | 2218 fps | 95.5% |
| Somchem S355 | <<locked>> | 84% | 33,504 psi | 53% | 2165 fps | 95% |
| Somchem S365 | <<locked>> | 92% | 30,748 psi | 49% | 2178 fps | 95% |
| Vihtavuori N130 | <<locked>> | 80% | 43,743 psi | 69% | 2247 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 38,624 psi | 61% | 2182 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 33,736 psi | 53% | 2152 fps | 99.9% |
| Vihtavuori N140 | <<locked>> | 80% | 34,809 psi | 55% | 2159 fps | 98.9% |
| Vihtavuori N150 | <<locked>> | 82% | 29,849 psi | 47% | 2067 fps | 95.2% |
| Vihtavuori N160 | <<locked>> | 96% | 41,640 psi | 66% | 2339 fps | 95.3% |
| Vihtavuori N530 | <<locked>> | 80% | 39,537 psi | 63% | 2251 fps | 97.9% |
| Vihtavuori N540 | <<locked>> | 80% | 33,315 psi | 53% | 2139 fps | 98.2% |
| Vihtavuori N550 | <<locked>> | 98% | 43,656 psi | 69% | 2392 fps | 95.7% |
| Winchester 6.5 StaBALL | <<locked>> | 90% | 35,056 psi | 56% | 2185 fps | 95.3% |
| Winchester 748 | <<locked>> | 80% | 38,392 psi | 61% | 2280 fps | 98.3% |
| Winchester StaBALL Match | <<locked>> | 80% | 35,056 psi | 56% | 2205 fps | 95.7% |
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 94 powders for .277 Fury Commercial loaded with the .277 | 150gr | Barnes MRX BT. ReloadSwiss RS 60 delivers the highest muzzle velocity at 2,644 fps; across all powders the maximum-charge window runs from 1,493 fps to 2,644 fps. Accurate 4350 gives the best case fill at 100 %, and 94 of the 94 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 150.0 gr projectile in 0.277" calls for a 1:9.5 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, Hodgdon CFE223, ReloadSwiss RS 52 rank at the top here: for .277 Fury Commercial with the .277 | 150gr | Barnes MRX BT 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.