Load Specifications
Bullet Manufacturer:Rhino Bullets
Bullet Weight:200 gr
Bullet Diameter:0.308"
Bullet Length:<<locked>>
Caliber:.300 RCM load data
Case Length (l3):2.09"
Cartridge Length (C.O.L.):<<locked>>
Case Capacity:75 Grains of Water
Primer Size:Large Rifle (LR)
Barrel Length:24"
Max. allowed Pressure:63,817 psi
Recommended Twist Rate:1:13.0
Load data in caliber .300 RCM with .308 | 200gr | Rhino Solid Shank bullet and 107 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: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2015 | <<locked>> | 82% | 56,507 psi | 89% | 2497 fps | 100% |
| Accurate 2495 | <<locked>> | 86% | 55,999 psi | 88% | 2530 fps | 100% |
| Accurate 2520 | <<locked>> | 82% | 57,406 psi | 90% | 2592 fps | 100% |
| Accurate 2700 | <<locked>> | 86% | 54,288 psi | 85% | 2546 fps | 98.4% |
| Accurate 3100ᴾ | <<locked>> | 100% | 46,354 psi | 73% | 2523 fps | 98.6% |
| Accurate 4064 | <<locked>> | 88% | 55,985 psi | 88% | 2579 fps | 100% |
| Accurate 4350 | <<locked>> | 96% | 56,231 psi | 88% | 2677 fps | 100% |
| ADI AR 2206H | <<locked>> | 84% | 55,709 psi | 87% | 2608 fps | 100% |
| ADI AR 2208 | <<locked>> | 90% | 56,782 psi | 89% | 2612 fps | 100% |
| ADI AR 2209ᴾ | <<locked>> | 100% | 53,867 psi | 84% | 2661 fps | 97.7% |
| ADI Benchmark 8208 | <<locked>> | 82% | 54,447 psi | 85% | 2556 fps | 100% |
| Alliant AR-Comp | <<locked>> | 82% | 56,173 psi | 88% | 2526 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 86% | 55,680 psi | 87% | 2726 fps | 100% |
| Alliant Power Pro Varmintᴾ | <<locked>> | 100% | 53,563 psi | 84% | 2657 fps | 97.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 90% | 57,276 psi | 90% | 2631 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 86% | 54,201 psi | 85% | 2605 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 98% | 56,811 psi | 89% | 2723 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 92% | 54,723 psi | 86% | 2707 fps | 100% |
| Alliant Reloder-19ᴾ | <<locked>> | 100% | 52,765 psi | 83% | 2648 fps | 97.6% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 46,572 psi | 73% | 2595 fps | 96.5% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 43,729 psi | 69% | 2546 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 38,493 psi | 60% | 2461 fps | 97.5% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 49,342 psi | 77% | 2713 fps | 99.9% |
| Baschieri & Pellagri 107 | <<locked>> | 84% | 55,593 psi | 87% | 2628 fps | 100% |
| Bofors RP3 | <<locked>> | 88% | 54,273 psi | 85% | 2598 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 46,572 psi | 73% | 2595 fps | 96.5% |
| Bofors RP7 | <<locked>> | 94% | 57,682 psi | 90% | 2631 fps | 99% |
| Hodgdon Benchmark | <<locked>> | 82% | 56,028 psi | 88% | 2536 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 82% | 54,172 psi | 85% | 2589 fps | 100% |
| Hodgdon H380 | <<locked>> | 88% | 55,085 psi | 86% | 2618 fps | 99.9% |
| Hodgdon H414 | <<locked>> | 94% | 54,926 psi | 86% | 2674 fps | 99.2% |
| Hodgdon H4350 | <<locked>> | 92% | 55,347 psi | 87% | 2638 fps | 98.3% |
| Hodgdon H4895 | <<locked>> | 84% | 56,289 psi | 88% | 2615 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 57,043 psi | 89% | 2651 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 86% | 55,999 psi | 88% | 2648 fps | 100% |
| Hodgdon Superformance | <<locked>> | 94% | 55,172 psi | 86% | 2713 fps | 99% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,969 psi | 56% | 1575 fps | 100% |
| Hodgdon VARGET | <<locked>> | 86% | 57,392 psi | 90% | 2615 fps | 100% |
| IMR 3031 | <<locked>> | 84% | 56,623 psi | 89% | 2589 fps | 100% |
| IMR 4064 | <<locked>> | 88% | 56,173 psi | 88% | 2592 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 86% | 55,883 psi | 88% | 2582 fps | 99.1% |
| IMR 4350 | <<locked>> | 96% | 54,723 psi | 86% | 2612 fps | 98.7% |
| IMR 4451 Enduron | <<locked>> | 92% | 55,999 psi | 88% | 2612 fps | 99.1% |
| IMR 4831 | <<locked>> | 98% | 56,579 psi | 89% | 2667 fps | 100% |
| IMR 4895 | <<locked>> | 86% | 55,550 psi | 87% | 2631 fps | 100% |
| IMR 4955 Enduronᴾ | <<locked>> | 100% | 53,577 psi | 84% | 2595 fps | 95.9% |
| IMR 8208 XBR | <<locked>> | 82% | 54,447 psi | 85% | 2556 fps | 100% |
| Lovex D073.6 | <<locked>> | 84% | 55,796 psi | 87% | 2582 fps | 100% |
| Lovex S060 | <<locked>> | 84% | 55,027 psi | 86% | 2536 fps | 100% |
| Lovex S062 | <<locked>> | 88% | 56,405 psi | 88% | 2589 fps | 100% |
| Lovex S065 | <<locked>> | 94% | 55,593 psi | 87% | 2605 fps | 99.7% |
| Lovex S070 | <<locked>> | 96% | 56,449 psi | 88% | 2638 fps | 99.4% |
| Lovex S071ᴾ | <<locked>> | 100% | 38,537 psi | 60% | 2385 fps | 97% |
| Norma 201 | <<locked>> | 84% | 54,404 psi | 85% | 2552 fps | 100% |
| Norma 202 | <<locked>> | 84% | 55,114 psi | 86% | 2552 fps | 100% |
| Norma 203B | <<locked>> | 88% | 56,956 psi | 89% | 2641 fps | 100% |
| Norma 204 | <<locked>> | 96% | 55,143 psi | 86% | 2657 fps | 97.8% |
| Norma MRPᴾ | <<locked>> | 100% | 49,095 psi | 77% | 2671 fps | 98.4% |
| Norma URP | <<locked>> | 96% | 54,766 psi | 86% | 2657 fps | 100% |
| Ramshot Big Game | <<locked>> | 88% | 57,450 psi | 90% | 2664 fps | 100% |
| Ramshot Hunter | <<locked>> | 98% | 57,217 psi | 90% | 2713 fps | 99.8% |
| Ramshot TAC | <<locked>> | 82% | 54,578 psi | 86% | 2582 fps | 99.7% |
| Ramshot Wild Boar | <<locked>> | 82% | 54,360 psi | 85% | 2595 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,608 psi | 57% | 1611 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 88% | 54,969 psi | 86% | 2598 fps | 99.4% |
| ReloadSwiss RS 52 | <<locked>> | 84% | 54,737 psi | 86% | 2667 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 90% | 54,201 psi | 85% | 2697 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 96% | 55,883 psi | 88% | 2700 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 96% | 54,578 psi | 86% | 2723 fps | 100% |
| Rottweil R 901 | <<locked>> | 82% | 55,434 psi | 87% | 2530 fps | 100% |
| Rottweil R 902 | <<locked>> | 86% | 55,143 psi | 86% | 2556 fps | 100% |
| Rottweil R 903 | <<locked>> | 90% | 54,447 psi | 85% | 2595 fps | 100% |
| Rottweil R 904ᴾ | <<locked>> | 100% | 55,753 psi | 87% | 2635 fps | 96.9% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 51,909 psi | 81% | 2635 fps | 97.6% |
| Rottweil R 907 | <<locked>> | 94% | 57,682 psi | 90% | 2631 fps | 99% |
| Shooters World Long Rifle | <<locked>> | 94% | 55,593 psi | 87% | 2605 fps | 99.7% |
| Shooters World Match Rifle | <<locked>> | 84% | 55,796 psi | 87% | 2582 fps | 100% |
| Shooters World Precision | <<locked>> | 88% | 56,405 psi | 88% | 2589 fps | 100% |
| Shooters World SW4350 | <<locked>> | 96% | 56,449 psi | 88% | 2638 fps | 99.4% |
| SNPE Vectan SP 11 | <<locked>> | 90% | 55,985 psi | 88% | 2651 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 84% | 56,971 psi | 89% | 2615 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 86% | 57,508 psi | 90% | 2628 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 84% | 55,622 psi | 87% | 2490 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 90% | 56,260 psi | 88% | 2493 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 94% | 55,550 psi | 87% | 2562 fps | 99.1% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 51,416 psi | 81% | 2631 fps | 97.5% |
| Somchem S335 | <<locked>> | 84% | 55,100 psi | 86% | 2487 fps | 100% |
| Somchem S341 | <<locked>> | 84% | 56,666 psi | 89% | 2602 fps | 100% |
| Somchem S355 | <<locked>> | 90% | 54,549 psi | 85% | 2592 fps | 100% |
| Somchem S365ᴾ | <<locked>> | 100% | 57,043 psi | 89% | 2707 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 52,649 psi | 83% | 2615 fps | 98.4% |
| Vihtavuori N133 | <<locked>> | 84% | 56,028 psi | 88% | 2470 fps | 100% |
| Vihtavuori N135 | <<locked>> | 86% | 55,027 psi | 86% | 2513 fps | 100% |
| Vihtavuori N140 | <<locked>> | 86% | 55,506 psi | 87% | 2530 fps | 100% |
| Vihtavuori N150 | <<locked>> | 92% | 55,753 psi | 87% | 2566 fps | 100% |
| Vihtavuori N160 | <<locked>> | 96% | 57,435 psi | 90% | 2657 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 45,208 psi | 71% | 2487 fps | 96.5% |
| Vihtavuori N530 | <<locked>> | 82% | 55,129 psi | 86% | 2556 fps | 100% |
| Vihtavuori N540 | <<locked>> | 88% | 57,217 psi | 90% | 2575 fps | 100% |
| Vihtavuori N550 | <<locked>> | 96% | 56,289 psi | 88% | 2661 fps | 100% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 48,878 psi | 77% | 2618 fps | 100% |
| Winchester 6.5 StaBALL | <<locked>> | 96% | 57,334 psi | 90% | 2631 fps | 100% |
| Winchester 748 | <<locked>> | 82% | 55,317 psi | 87% | 2602 fps | 100% |
| Winchester 760 | <<locked>> | 94% | 55,172 psi | 86% | 2677 fps | 99.2% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 39,218 psi | 61% | 2579 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 86% | 57,624 psi | 90% | 2635 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 49,342 psi | 77% | 2556 fps | 96.8% |
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% | 53,229 psi | 83% | 2457 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 46,064 psi | 72% | 2402 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 53,519 psi | 84% | 2543 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 44,628 psi | 70% | 2395 fps | 96.6% |
| Accurate 3100 | <<locked>> | 90% | 33,011 psi | 52% | 2270 fps | 95.1% |
| Accurate 4064 | <<locked>> | 80% | 43,598 psi | 68% | 2405 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 32,605 psi | 51% | 2270 fps | 96.9% |
| ADI AR 2206H | <<locked>> | 80% | 49,313 psi | 77% | 2513 fps | 100% |
| ADI AR 2208 | <<locked>> | 80% | 41,901 psi | 66% | 2382 fps | 99.3% |
| ADI AR 2209 | <<locked>> | 94% | 44,483 psi | 70% | 2503 fps | 95.5% |
| ADI Benchmark 8208 | <<locked>> | 80% | 51,387 psi | 81% | 2513 fps | 100% |
| Alliant AR-Comp | <<locked>> | 80% | 52,475 psi | 82% | 2484 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 45,136 psi | 71% | 2562 fps | 99.8% |
| Alliant Power Pro Varmint | <<locked>> | 94% | 44,324 psi | 69% | 2507 fps | 95.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 41,901 psi | 66% | 2402 fps | 99.9% |
| Alliant Reloder-15 | <<locked>> | 80% | 44,933 psi | 70% | 2464 fps | 99.7% |
| Alliant Reloder-16 | <<locked>> | 80% | 32,460 psi | 51% | 2280 fps | 96.9% |
| Alliant Reloder-17 | 49.4 gr | 80% | 36,390 psi | 57% | 2395 fps | 99.4% |
| Alliant Reloder-19 | <<locked>> | 94% | 43,816 psi | 69% | 2497 fps | 95.6% |
| Alliant Reloder-22 | <<locked>> | 98% | 43,584 psi | 68% | 2543 fps | 95.7% |
| Alliant Reloder-23 | <<locked>> | 82% | 25,164 psi | 39% | 2106 fps | 95% |
| Alliant Reloder-25 | <<locked>> | 96% | 34,127 psi | 53% | 2359 fps | 95.8% |
| Alliant Reloder-26 | <<locked>> | 86% | 30,327 psi | 48% | 2310 fps | 95.1% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 48,515 psi | 76% | 2523 fps | 99.8% |
| Bofors RP3 | <<locked>> | 80% | 41,887 psi | 66% | 2411 fps | 100% |
| Bofors RP5 | <<locked>> | 98% | 43,584 psi | 68% | 2543 fps | 95.7% |
| Bofors RP7 | <<locked>> | 82% | 39,682 psi | 62% | 2339 fps | 95.5% |
| Hodgdon Benchmark | <<locked>> | 80% | 52,663 psi | 83% | 2490 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 50,575 psi | 79% | 2536 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 42,453 psi | 67% | 2418 fps | 98.8% |
| Hodgdon H414 | <<locked>> | 82% | 37,057 psi | 58% | 2365 fps | 95.4% |
| Hodgdon H4350 | <<locked>> | 84% | 42,873 psi | 67% | 2434 fps | 95.7% |
| Hodgdon H4895 | <<locked>> | 80% | 49,850 psi | 78% | 2523 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 29,950 psi | 47% | 2188 fps | 97.7% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 45,847 psi | 72% | 2503 fps | 100% |
| Hodgdon Superformance | 54.8 gr | 84% | 38,812 psi | 61% | 2428 fps | 95.4% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,977 psi | 42% | 1407 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 47,558 psi | 75% | 2477 fps | 100% |
| IMR 3031 | <<locked>> | 80% | 50,067 psi | 78% | 2503 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 44,048 psi | 69% | 2411 fps | 99.7% |
| IMR 4166 Enduron | <<locked>> | 80% | 46,282 psi | 73% | 2431 fps | 97.7% |
| IMR 4350 | <<locked>> | 86% | 40,001 psi | 63% | 2369 fps | 95.6% |
| IMR 4451 Enduron | <<locked>> | 80% | 38,783 psi | 61% | 2320 fps | 95.7% |
| IMR 4831 | <<locked>> | 80% | 31,459 psi | 49% | 2228 fps | 96.5% |
| IMR 4895 | <<locked>> | 80% | 46,050 psi | 72% | 2490 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 98% | 50,299 psi | 79% | 2546 fps | 95.1% |
| IMR 8208 XBR | <<locked>> | 80% | 51,387 psi | 81% | 2513 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 48,950 psi | 77% | 2490 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 48,776 psi | 76% | 2448 fps | 100% |
| Lovex S062 | <<locked>> | 80% | 44,121 psi | 69% | 2411 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 36,216 psi | 57% | 2274 fps | 96.5% |
| Lovex S070 | <<locked>> | 82% | 36,695 psi | 57% | 2303 fps | 95.5% |
| Lovex S071 | <<locked>> | 96% | 33,982 psi | 53% | 2293 fps | 95.5% |
| Norma 201 | <<locked>> | 80% | 48,109 psi | 75% | 2464 fps | 100% |
| Norma 202 | <<locked>> | 80% | 48,660 psi | 76% | 2464 fps | 100% |
| Norma 203B | <<locked>> | 80% | 44,309 psi | 69% | 2454 fps | 99.9% |
| Norma 204 | <<locked>> | 90% | 45,194 psi | 71% | 2503 fps | 95.7% |
| Norma MRP | <<locked>> | 92% | 37,550 psi | 59% | 2451 fps | 95.3% |
| Norma URP | <<locked>> | 80% | 32,677 psi | 51% | 2267 fps | 96.7% |
| Ramshot Big Game | <<locked>> | 80% | 43,918 psi | 69% | 2467 fps | 99.8% |
| Ramshot Hunter | <<locked>> | 82% | 33,953 psi | 53% | 2306 fps | 95.2% |
| Ramshot TAC | <<locked>> | 80% | 51,053 psi | 80% | 2530 fps | 99.5% |
| Ramshot Wild Boar | <<locked>> | 80% | 51,068 psi | 80% | 2549 fps | 100% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,398 psi | 43% | 1440 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 42,525 psi | 67% | 2402 fps | 97.5% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 47,863 psi | 75% | 2566 fps | 99.9% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 38,740 psi | 61% | 2451 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 32,155 psi | 50% | 2283 fps | 96.3% |
| ReloadSwiss RS 70 | 50.1 gr | 80% | 31,879 psi | 50% | 2283 fps | 95.3% |
| Rottweil R 901 | <<locked>> | 80% | 52,301 psi | 82% | 2487 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 45,992 psi | 72% | 2425 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 39,262 psi | 62% | 2359 fps | 99.7% |
| Rottweil R 904 | <<locked>> | 96% | 49,139 psi | 77% | 2533 fps | 95.5% |
| Rottweil R 905 | <<locked>> | 94% | 42,598 psi | 67% | 2480 fps | 95.5% |
| Rottweil R 907 | <<locked>> | 82% | 39,682 psi | 62% | 2339 fps | 95.5% |
| Shooters World Long Rifle | <<locked>> | 80% | 36,216 psi | 57% | 2274 fps | 96.5% |
| Shooters World Match Rifle | <<locked>> | 80% | 48,950 psi | 77% | 2490 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 44,121 psi | 69% | 2411 fps | 100% |
| Shooters World SW4350 | <<locked>> | 82% | 36,695 psi | 57% | 2303 fps | 95.5% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 40,321 psi | 63% | 2408 fps | 99.5% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 49,821 psi | 78% | 2513 fps | 99.6% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 47,645 psi | 75% | 2487 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 49,298 psi | 77% | 2405 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 41,350 psi | 65% | 2290 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 82% | 37,753 psi | 59% | 2270 fps | 95.6% |
| SNPE Vectan Tubal 8000 | <<locked>> | 94% | 42,206 psi | 66% | 2477 fps | 95.3% |
| Somchem S335 | <<locked>> | 80% | 48,863 psi | 77% | 2405 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 49,356 psi | 77% | 2503 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 39,914 psi | 63% | 2362 fps | 99.7% |
| Somchem S365 | <<locked>> | 80% | 29,385 psi | 46% | 2231 fps | 98.8% |
| Somchem S385 | <<locked>> | 92% | 40,495 psi | 63% | 2415 fps | 95.8% |
| Vihtavuori N133 | <<locked>> | 80% | 49,734 psi | 78% | 2395 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 45,788 psi | 72% | 2392 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 46,006 psi | 72% | 2402 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 37,985 psi | 60% | 2300 fps | 99.9% |
| Vihtavuori N160 | <<locked>> | 80% | 34,185 psi | 54% | 2270 fps | 97.1% |
| Vihtavuori N165 | <<locked>> | 96% | 39,842 psi | 62% | 2392 fps | 95% |
| Vihtavuori N530 | <<locked>> | 80% | 51,619 psi | 81% | 2510 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 44,469 psi | 70% | 2402 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 33,605 psi | 53% | 2274 fps | 96.8% |
| Vihtavuori N555 | <<locked>> | 82% | 27,079 psi | 42% | 2175 fps | 95.2% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 33,489 psi | 52% | 2247 fps | 98.8% |
| Winchester 748 | <<locked>> | 80% | 51,837 psi | 81% | 2556 fps | 100% |
| Winchester 760 | <<locked>> | 82% | 37,057 psi | 58% | 2365 fps | 95.4% |
| Winchester StaBALL HD | <<locked>> | 86% | 25,048 psi | 39% | 2172 fps | 95.3% |
| Winchester StaBALL Match | <<locked>> | 80% | 47,326 psi | 74% | 2493 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 96% | 43,062 psi | 67% | 2454 fps | 95.2% |
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 107 powders for .300 RCM loaded with the .308 | 200gr | Rhino Solid Shank. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 2,726 fps; across all powders the maximum-charge window runs from 1,575 fps to 2,726 fps. Accurate 3100 gives the best case fill at 100 %, and 107 of the 107 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (440 MPa), the top charges use 56–90 %, leaving at least 10 % headroom. The 200.0 gr projectile in 0.308" calls for a 1:13.0 twist; slower twists will usually not stabilise this weight. Accurate 3100, ADI AR 2209, Alliant Power Pro Varmint 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 .300 RCM with the .308 | 200gr | Rhino Solid Shank 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.