Load Specifications
Bullet Manufacturer:Rhino Bullets
Bullet Weight:165 gr
Bullet Diameter:0.307"
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:1:15.0
Load data in caliber .300 RCM with .307 | 165gr | Rhino Solid Shank bullet and 100 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 60, Alliant Power Pro 2000-MR and Hodgdon Superformance.
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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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>> | 84% | 54,868 psi | 86% | 2756 fps | 100% |
| Accurate 2460 | <<locked>> | 82% | 56,927 psi | 89% | 2831 fps | 100% |
| Accurate 2495 | <<locked>> | 90% | 57,203 psi | 90% | 2828 fps | 100% |
| Accurate 2520 | <<locked>> | 84% | 55,303 psi | 87% | 2844 fps | 100% |
| Accurate 2700 | <<locked>> | 90% | 56,536 psi | 89% | 2831 fps | 97.1% |
| Accurate 4064 | <<locked>> | 92% | 57,014 psi | 89% | 2874 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 56,956 psi | 89% | 2959 fps | 99.7% |
| ADI AR 2206H | <<locked>> | 88% | 57,595 psi | 90% | 2910 fps | 100% |
| ADI AR 2208 | <<locked>> | 92% | 55,100 psi | 86% | 2858 fps | 99.8% |
| ADI Benchmark 8208 | <<locked>> | 86% | 56,420 psi | 88% | 2858 fps | 100% |
| Alliant AR-Comp | <<locked>> | 86% | 57,493 psi | 90% | 2831 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 90% | 57,493 psi | 90% | 3031 fps | 99.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 92% | 54,998 psi | 86% | 2877 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 90% | 55,550 psi | 87% | 2897 fps | 99.8% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 54,520 psi | 85% | 2963 fps | 99.8% |
| Alliant Reloder-17 | <<locked>> | 96% | 55,985 psi | 88% | 3002 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 39,044 psi | 61% | 2694 fps | 98.6% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 43,584 psi | 68% | 2851 fps | 97.8% |
| Baschieri & Pellagri 107 | <<locked>> | 88% | 57,421 psi | 90% | 2923 fps | 99.8% |
| Bofors RP3 | <<locked>> | 92% | 55,738 psi | 87% | 2894 fps | 100% |
| Bofors RP7 | <<locked>> | 96% | 55,941 psi | 88% | 2864 fps | 97.3% |
| Hodgdon Benchmark | <<locked>> | 84% | 54,795 psi | 86% | 2789 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 86% | 55,912 psi | 88% | 2887 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 82% | 54,331 psi | 85% | 2936 fps | 99.8% |
| Hodgdon H322 | <<locked>> | 82% | 57,188 psi | 90% | 2848 fps | 100% |
| Hodgdon H380 | <<locked>> | 92% | 56,681 psi | 89% | 2907 fps | 99.4% |
| Hodgdon H414 | <<locked>> | 98% | 56,246 psi | 88% | 2956 fps | 98% |
| Hodgdon H4350 | <<locked>> | 96% | 56,898 psi | 89% | 2917 fps | 96.8% |
| Hodgdon H4895 | <<locked>> | 86% | 54,476 psi | 85% | 2864 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 50,734 psi | 80% | 2838 fps | 99.9% |
| Hodgdon LEVERevolution | <<locked>> | 90% | 57,653 psi | 90% | 2953 fps | 100% |
| Hodgdon Superformance | <<locked>> | 98% | 57,159 psi | 90% | 2995 fps | 97.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,476 psi | 56% | 1749 fps | 100% |
| Hodgdon VARGET | <<locked>> | 88% | 55,811 psi | 87% | 2867 fps | 100% |
| IMR 3031 | <<locked>> | 86% | 54,737 psi | 86% | 2854 fps | 100% |
| IMR 4064 | <<locked>> | 90% | 54,607 psi | 86% | 2838 fps | 99.8% |
| IMR 4166 Enduron | <<locked>> | 88% | 54,549 psi | 85% | 2818 fps | 97.6% |
| IMR 4198 | <<locked>> | 82% | 57,667 psi | 90% | 2759 fps | 100% |
| IMR 4350ᴾ | <<locked>> | 100% | 56,028 psi | 88% | 2887 fps | 97.4% |
| IMR 4451 Enduron | <<locked>> | 96% | 57,624 psi | 90% | 2894 fps | 98% |
| IMR 4831ᴾ | <<locked>> | 100% | 53,722 psi | 84% | 2894 fps | 99.5% |
| IMR 4895 | <<locked>> | 90% | 56,971 psi | 89% | 2930 fps | 100% |
| IMR 8208 XBR | <<locked>> | 86% | 56,420 psi | 88% | 2858 fps | 100% |
| Lovex D073.5 | <<locked>> | 82% | 56,942 psi | 89% | 2844 fps | 100% |
| Lovex D073.6 | <<locked>> | 88% | 57,653 psi | 90% | 2887 fps | 100% |
| Lovex S060 | <<locked>> | 88% | 56,985 psi | 89% | 2835 fps | 100% |
| Lovex S062 | <<locked>> | 90% | 54,375 psi | 85% | 2835 fps | 100% |
| Lovex S065 | <<locked>> | 98% | 57,130 psi | 90% | 2887 fps | 99% |
| Lovex S070 | <<locked>> | 98% | 54,389 psi | 85% | 2867 fps | 97.8% |
| Norma 201 | <<locked>> | 88% | 56,260 psi | 88% | 2854 fps | 100% |
| Norma 202 | <<locked>> | 88% | 56,826 psi | 89% | 2854 fps | 100% |
| Norma 203B | <<locked>> | 90% | 54,781 psi | 86% | 2887 fps | 99.9% |
| Norma 204ᴾ | <<locked>> | 100% | 56,927 psi | 89% | 2940 fps | 96.2% |
| Norma URPᴾ | <<locked>> | 100% | 56,043 psi | 88% | 2946 fps | 99.6% |
| Ramshot Big Game | <<locked>> | 90% | 55,492 psi | 87% | 2913 fps | 99.9% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 54,839 psi | 86% | 2943 fps | 98.5% |
| Ramshot TAC | <<locked>> | 86% | 56,840 psi | 89% | 2877 fps | 99.1% |
| Ramshot Wild Boar | <<locked>> | 86% | 56,536 psi | 89% | 2897 fps | 100% |
| Ramshot X-Terminator | <<locked>> | 84% | 57,435 psi | 90% | 2861 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,940 psi | 56% | 1788 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 82% | 56,057 psi | 88% | 2838 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 92% | 57,159 psi | 90% | 2890 fps | 98.5% |
| ReloadSwiss RS 52 | <<locked>> | 88% | 56,275 psi | 88% | 2969 fps | 99.9% |
| ReloadSwiss RS 60 | <<locked>> | 94% | 55,724 psi | 87% | 3002 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 56,681 psi | 89% | 2982 fps | 99.6% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 56,449 psi | 88% | 3012 fps | 99.5% |
| Rottweil R 901 | <<locked>> | 86% | 57,261 psi | 90% | 2835 fps | 100% |
| Rottweil R 902 | <<locked>> | 90% | 56,695 psi | 89% | 2848 fps | 100% |
| Rottweil R 903 | <<locked>> | 94% | 55,593 psi | 87% | 2884 fps | 100% |
| Rottweil R 907 | <<locked>> | 96% | 55,941 psi | 88% | 2864 fps | 97.3% |
| Shooters World Long Rifle | <<locked>> | 98% | 57,130 psi | 90% | 2887 fps | 99% |
| Shooters World Match Rifle | <<locked>> | 88% | 57,653 psi | 90% | 2887 fps | 100% |
| Shooters World Precision | <<locked>> | 90% | 54,375 psi | 85% | 2835 fps | 100% |
| Shooters World SW4350 | <<locked>> | 98% | 54,389 psi | 85% | 2867 fps | 97.8% |
| SNPE Vectan SP 11 | <<locked>> | 94% | 57,290 psi | 90% | 2946 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 86% | 55,245 psi | 87% | 2854 fps | 99.2% |
| SNPE Vectan SP 9 | <<locked>> | 88% | 56,028 psi | 88% | 2881 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 86% | 54,549 psi | 85% | 2746 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 92% | 54,679 psi | 86% | 2743 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 98% | 57,493 psi | 90% | 2841 fps | 98% |
| Somchem S321 | <<locked>> | 82% | 54,114 psi | 85% | 2838 fps | 100% |
| Somchem S335 | <<locked>> | 88% | 57,116 psi | 90% | 2789 fps | 100% |
| Somchem S341 | <<locked>> | 86% | 54,868 psi | 86% | 2848 fps | 99.9% |
| Somchem S355 | <<locked>> | 94% | 55,680 psi | 87% | 2881 fps | 100% |
| Somchem S365ᴾ | <<locked>> | 100% | 50,227 psi | 79% | 2897 fps | 100% |
| Vihtavuori N130 | <<locked>> | 84% | 57,566 psi | 90% | 2753 fps | 100% |
| Vihtavuori N133 | <<locked>> | 86% | 54,781 psi | 86% | 2733 fps | 100% |
| Vihtavuori N135 | <<locked>> | 90% | 56,463 psi | 88% | 2812 fps | 100% |
| Vihtavuori N140 | <<locked>> | 90% | 57,290 psi | 90% | 2828 fps | 100% |
| Vihtavuori N150 | <<locked>> | 96% | 57,406 psi | 90% | 2861 fps | 100% |
| Vihtavuori N160 | <<locked>> | 98% | 54,911 psi | 86% | 2890 fps | 99.5% |
| Vihtavuori N530 | <<locked>> | 86% | 57,043 psi | 89% | 2858 fps | 100% |
| Vihtavuori N540 | <<locked>> | 90% | 55,405 psi | 87% | 2825 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 57,624 psi | 90% | 2949 fps | 99.6% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 42,598 psi | 67% | 2769 fps | 98.4% |
| Winchester 6.5 StaBALL | <<locked>> | 98% | 55,288 psi | 87% | 2871 fps | 100% |
| Winchester 748 | <<locked>> | 86% | 56,956 psi | 89% | 2907 fps | 100% |
| Winchester 760 | <<locked>> | 98% | 56,246 psi | 88% | 2956 fps | 98% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 35,012 psi | 55% | 2690 fps | 98.3% |
| Winchester StaBALL Match | <<locked>> | 88% | 56,014 psi | 88% | 2890 fps | 100% |
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% | 48,704 psi | 76% | 2667 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 53,272 psi | 83% | 2779 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 41,220 psi | 65% | 2589 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 48,312 psi | 76% | 2740 fps | 100% |
| Accurate 2700 | <<locked>> | 86% | 49,588 psi | 78% | 2720 fps | 95.7% |
| Accurate 4064 | <<locked>> | 80% | 39,001 psi | 61% | 2582 fps | 100% |
| Accurate 4350 | <<locked>> | 86% | 35,041 psi | 55% | 2559 fps | 95.6% |
| ADI AR 2206H | <<locked>> | 80% | 44,715 psi | 70% | 2697 fps | 99.1% |
| ADI AR 2208 | <<locked>> | 80% | 38,145 psi | 60% | 2546 fps | 97.1% |
| ADI Benchmark 8208 | <<locked>> | 80% | 46,775 psi | 73% | 2703 fps | 99.8% |
| Alliant AR-Comp | <<locked>> | 80% | 47,210 psi | 74% | 2694 fps | 100% |
| Alliant Power Pro 2000-MR | 52.9 gr | 80% | 40,799 psi | 64% | 2726 fps | 97.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 37,710 psi | 59% | 2569 fps | 98.5% |
| Alliant Reloder-15 | <<locked>> | 80% | 40,451 psi | 63% | 2631 fps | 97.9% |
| Alliant Reloder-16 | <<locked>> | 86% | 35,433 psi | 56% | 2579 fps | 95.8% |
| Alliant Reloder-17 | <<locked>> | 80% | 32,648 psi | 51% | 2533 fps | 96.5% |
| Alliant Reloder-23 | <<locked>> | 92% | 30,472 psi | 48% | 2474 fps | 95.3% |
| Alliant Reloder-26 | <<locked>> | 96% | 37,797 psi | 59% | 2720 fps | 95.8% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 43,976 psi | 69% | 2700 fps | 98.2% |
| Bofors RP3 | <<locked>> | 80% | 37,463 psi | 59% | 2572 fps | 98.5% |
| Bofors RP7 | <<locked>> | 90% | 46,340 psi | 73% | 2703 fps | 95.2% |
| Hodgdon Benchmark | <<locked>> | 80% | 48,646 psi | 76% | 2697 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 45,818 psi | 72% | 2730 fps | 99.9% |
| Hodgdon CFE223 | <<locked>> | 80% | 50,473 psi | 79% | 2874 fps | 99.5% |
| Hodgdon H322 | <<locked>> | 80% | 53,693 psi | 84% | 2802 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 38,218 psi | 60% | 2572 fps | 96% |
| Hodgdon H414 | <<locked>> | 90% | 43,163 psi | 68% | 2730 fps | 95.1% |
| Hodgdon H4350 | <<locked>> | 92% | 50,154 psi | 79% | 2808 fps | 95.4% |
| Hodgdon H4895 | <<locked>> | 80% | 45,165 psi | 71% | 2707 fps | 99.4% |
| Hodgdon Hybrid 100V | <<locked>> | 84% | 30,458 psi | 48% | 2418 fps | 95.6% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 41,104 psi | 64% | 2677 fps | 99.2% |
| Hodgdon Superformance | 63.3 gr | 92% | 46,166 psi | 72% | 2808 fps | 95.3% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,368 psi | 41% | 1562 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 43,439 psi | 68% | 2661 fps | 99.2% |
| IMR 3031 | <<locked>> | 80% | 44,991 psi | 71% | 2707 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 40,059 psi | 63% | 2582 fps | 97.9% |
| IMR 4166 Enduron | <<locked>> | 82% | 45,324 psi | 71% | 2657 fps | 95.6% |
| IMR 4198 | <<locked>> | 80% | 54,433 psi | 85% | 2717 fps | 100% |
| IMR 4350 | <<locked>> | 94% | 46,441 psi | 73% | 2726 fps | 95.3% |
| IMR 4451 Enduron | <<locked>> | 88% | 45,165 psi | 71% | 2684 fps | 95.4% |
| IMR 4831 | <<locked>> | 86% | 34,040 psi | 53% | 2520 fps | 95.3% |
| IMR 4895 | <<locked>> | 80% | 41,452 psi | 65% | 2661 fps | 98.6% |
| IMR 8208 XBR | <<locked>> | 80% | 46,775 psi | 73% | 2703 fps | 99.8% |
| Lovex D073.5 | <<locked>> | 80% | 53,026 psi | 83% | 2789 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 43,888 psi | 69% | 2677 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 44,860 psi | 70% | 2635 fps | 99.1% |
| Lovex S062 | <<locked>> | 80% | 39,972 psi | 63% | 2585 fps | 99.2% |
| Lovex S065 | <<locked>> | 86% | 39,537 psi | 62% | 2579 fps | 95.5% |
| Lovex S070 | <<locked>> | 90% | 42,424 psi | 66% | 2654 fps | 95% |
| Norma 201 | <<locked>> | 80% | 43,787 psi | 69% | 2648 fps | 99.6% |
| Norma 202 | <<locked>> | 80% | 44,150 psi | 69% | 2657 fps | 100% |
| Norma 203B | <<locked>> | 80% | 39,842 psi | 62% | 2618 fps | 98.3% |
| Norma 204 | <<locked>> | 98% | 53,142 psi | 83% | 2881 fps | 95.4% |
| Norma URP | <<locked>> | 86% | 35,491 psi | 56% | 2566 fps | 95.6% |
| Ramshot Big Game | <<locked>> | 80% | 39,465 psi | 62% | 2635 fps | 98% |
| Ramshot Hunter | <<locked>> | 92% | 42,061 psi | 66% | 2713 fps | 95.7% |
| Ramshot TAC | <<locked>> | 80% | 46,746 psi | 73% | 2710 fps | 97.5% |
| Ramshot Wild Boar | <<locked>> | 80% | 46,253 psi | 72% | 2730 fps | 99.3% |
| Ramshot X-Terminator | <<locked>> | 80% | 50,604 psi | 79% | 2756 fps | 99.6% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,672 psi | 42% | 1598 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 52,475 psi | 82% | 2785 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 41,234 psi | 65% | 2612 fps | 95.1% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 42,540 psi | 67% | 2733 fps | 98.3% |
| ReloadSwiss RS 60 | 52.1 gr | 80% | 34,751 psi | 54% | 2602 fps | 99.3% |
| ReloadSwiss RS 62 | <<locked>> | 86% | 34,925 psi | 55% | 2579 fps | 95.1% |
| ReloadSwiss RS 70 | <<locked>> | 88% | 37,594 psi | 59% | 2644 fps | 95.1% |
| Rottweil R 901 | <<locked>> | 80% | 47,790 psi | 75% | 2690 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 41,698 psi | 65% | 2602 fps | 99.4% |
| Rottweil R 903 | <<locked>> | 80% | 35,186 psi | 55% | 2516 fps | 97.7% |
| Rottweil R 907 | <<locked>> | 90% | 46,340 psi | 73% | 2703 fps | 95.2% |
| Shooters World Long Rifle | <<locked>> | 86% | 39,537 psi | 62% | 2579 fps | 95.5% |
| Shooters World Match Rifle | <<locked>> | 80% | 43,888 psi | 69% | 2677 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 39,972 psi | 63% | 2585 fps | 99.2% |
| Shooters World SW4350 | <<locked>> | 90% | 42,424 psi | 66% | 2654 fps | 95% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 36,013 psi | 56% | 2562 fps | 97.1% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 45,005 psi | 71% | 2684 fps | 97.7% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 43,178 psi | 68% | 2664 fps | 98.8% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 45,136 psi | 71% | 2602 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 37,565 psi | 59% | 2470 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 90% | 44,454 psi | 70% | 2631 fps | 95.4% |
| Somchem S321 | <<locked>> | 80% | 50,691 psi | 79% | 2785 fps | 100% |
| Somchem S335 | <<locked>> | 80% | 44,715 psi | 70% | 2602 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 44,802 psi | 70% | 2684 fps | 99% |
| Somchem S355 | <<locked>> | 80% | 35,926 psi | 56% | 2520 fps | 97.7% |
| Somchem S365 | <<locked>> | 80% | 26,208 psi | 41% | 2349 fps | 95% |
| Vihtavuori N130 | <<locked>> | 80% | 50,923 psi | 80% | 2661 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 45,484 psi | 71% | 2595 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 41,220 psi | 65% | 2585 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 41,872 psi | 66% | 2595 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 34,258 psi | 54% | 2461 fps | 98.5% |
| Vihtavuori N160 | <<locked>> | 84% | 34,679 psi | 54% | 2513 fps | 95.2% |
| Vihtavuori N530 | <<locked>> | 80% | 47,036 psi | 74% | 2703 fps | 99.9% |
| Vihtavuori N540 | <<locked>> | 80% | 40,306 psi | 63% | 2582 fps | 100% |
| Vihtavuori N550 | <<locked>> | 86% | 36,448 psi | 57% | 2569 fps | 95.6% |
| Vihtavuori N555 | <<locked>> | 92% | 32,895 psi | 52% | 2556 fps | 95.5% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 30,371 psi | 48% | 2382 fps | 95.7% |
| Winchester 748 | <<locked>> | 80% | 46,572 psi | 73% | 2746 fps | 100% |
| Winchester 760 | <<locked>> | 90% | 43,163 psi | 68% | 2730 fps | 95.1% |
| Winchester StaBALL HD | <<locked>> | 96% | 30,719 psi | 48% | 2556 fps | 96% |
| Winchester StaBALL Match | <<locked>> | 80% | 42,728 psi | 67% | 2671 fps | 99.2% |
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 100 powders for .300 RCM loaded with the .307 | 165gr | Rhino Solid Shank. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 3,031 fps; across all powders the maximum-charge window runs from 1,749 fps to 3,031 fps. Accurate 4350 gives the best case fill at 100 %, and 100 of the 100 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (440 MPa), the top charges use 55–90 %, leaving at least 10 % headroom. The 165.0 gr projectile in 0.307" calls for a 1:15.0 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. ReloadSwiss RS 60, Alliant Power Pro 2000-MR, Hodgdon Superformance rank at the top here: for .300 RCM with the .307 | 165gr | 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.