Load Specifications
Bullet Manufacturer:Peregrine
Bullet Weight:156 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:1:10.5
Load data in caliber .300 RCM with .308 | 155.8gr | Peregrine Glider (Glider GRM) bullet and 103 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 ReloadSwiss RS 60.
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>> | 88% | 54,795 psi | 86% | 2818 fps | 100% |
| Accurate 2460 | <<locked>> | 86% | 56,695 psi | 89% | 2890 fps | 100% |
| Accurate 2495 | <<locked>> | 94% | 55,564 psi | 87% | 2874 fps | 100% |
| Accurate 2520 | <<locked>> | 88% | 55,027 psi | 86% | 2904 fps | 100% |
| Accurate 2700 | <<locked>> | 94% | 56,869 psi | 89% | 2874 fps | 95.9% |
| Accurate 4064 | <<locked>> | 96% | 55,259 psi | 87% | 2917 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 47,906 psi | 75% | 2874 fps | 97.9% |
| Accurate LT-30 | <<locked>> | 82% | 54,520 psi | 85% | 2766 fps | 100% |
| Accurate LT-32 | <<locked>> | 82% | 54,955 psi | 86% | 2792 fps | 100% |
| ADI AR 2206H | <<locked>> | 92% | 57,363 psi | 90% | 2959 fps | 99.8% |
| ADI AR 2208 | <<locked>> | 96% | 54,969 psi | 86% | 2904 fps | 99.2% |
| ADI AR 2219 | <<locked>> | 82% | 55,332 psi | 87% | 2887 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 90% | 56,811 psi | 89% | 2917 fps | 100% |
| Alliant AR-Comp | <<locked>> | 90% | 56,927 psi | 89% | 2894 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 84% | 54,781 psi | 86% | 2972 fps | 99.8% |
| Alliant Power Pro 2000-MR | <<locked>> | 94% | 57,159 psi | 90% | 3077 fps | 99.5% |
| Alliant Reloder- TS 15.5 | <<locked>> | 96% | 54,215 psi | 85% | 2923 fps | 99.9% |
| Alliant Reloder-10x | <<locked>> | 84% | 54,505 psi | 85% | 2822 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 94% | 55,172 psi | 86% | 2949 fps | 99.4% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 47,529 psi | 74% | 2887 fps | 98.1% |
| Alliant Reloder-17ᴾ | <<locked>> | 100% | 55,129 psi | 86% | 3041 fps | 99.9% |
| Baschieri & Pellagri 106 | <<locked>> | 84% | 57,232 psi | 90% | 2805 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 92% | 57,609 psi | 90% | 2979 fps | 99.3% |
| Bofors RP3 | <<locked>> | 96% | 54,476 psi | 85% | 2936 fps | 99.9% |
| Bofors RP7ᴾ | <<locked>> | 100% | 55,492 psi | 87% | 2900 fps | 96% |
| Hodgdon Benchmark | <<locked>> | 88% | 55,245 psi | 87% | 2851 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 90% | 55,825 psi | 87% | 2946 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 86% | 53,809 psi | 84% | 2986 fps | 99.3% |
| Hodgdon H322 | <<locked>> | 86% | 57,580 psi | 90% | 2917 fps | 100% |
| Hodgdon H335 | <<locked>> | 84% | 54,940 psi | 86% | 2890 fps | 100% |
| Hodgdon H380 | <<locked>> | 96% | 56,391 psi | 88% | 2953 fps | 98.7% |
| Hodgdon H414ᴾ | <<locked>> | 100% | 51,605 psi | 81% | 2930 fps | 96% |
| Hodgdon H4895 | <<locked>> | 90% | 54,534 psi | 85% | 2923 fps | 99.8% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 43,453 psi | 68% | 2762 fps | 98.5% |
| Hodgdon LEVERevolution | <<locked>> | 94% | 57,043 psi | 89% | 3005 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,563 psi | 54% | 1755 fps | 100% |
| Hodgdon VARGET | <<locked>> | 92% | 56,144 psi | 88% | 2927 fps | 99.8% |
| IMR 3031 | <<locked>> | 92% | 57,334 psi | 90% | 2956 fps | 100% |
| IMR 4064 | <<locked>> | 94% | 54,476 psi | 85% | 2887 fps | 99.3% |
| IMR 4166 Enduron | <<locked>> | 92% | 54,969 psi | 86% | 2864 fps | 96.5% |
| IMR 4198 | <<locked>> | 84% | 55,230 psi | 87% | 2789 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 98% | 54,186 psi | 85% | 2881 fps | 96.2% |
| IMR 4831ᴾ | <<locked>> | 100% | 45,643 psi | 72% | 2818 fps | 97.6% |
| IMR 4895 | <<locked>> | 94% | 56,579 psi | 89% | 2979 fps | 99.8% |
| IMR 8208 XBR | <<locked>> | 90% | 56,811 psi | 89% | 2917 fps | 100% |
| Lovex D073.5 | <<locked>> | 86% | 56,942 psi | 89% | 2904 fps | 100% |
| Lovex D073.6 | <<locked>> | 92% | 56,579 psi | 89% | 2933 fps | 100% |
| Lovex S060 | <<locked>> | 92% | 57,580 psi | 90% | 2890 fps | 99.8% |
| Lovex S062 | <<locked>> | 96% | 57,116 psi | 90% | 2933 fps | 100% |
| Lovex S065ᴾ | <<locked>> | 100% | 52,910 psi | 83% | 2871 fps | 97.5% |
| Lovex S070ᴾ | <<locked>> | 100% | 50,111 psi | 79% | 2844 fps | 95.8% |
| Norma 200 | <<locked>> | 82% | 57,711 psi | 90% | 2841 fps | 100% |
| Norma 201 | <<locked>> | 92% | 56,043 psi | 88% | 2907 fps | 100% |
| Norma 202 | <<locked>> | 92% | 56,666 psi | 89% | 2913 fps | 100% |
| Norma 203B | <<locked>> | 96% | 57,682 psi | 90% | 2986 fps | 99.8% |
| Norma URPᴾ | <<locked>> | 100% | 47,601 psi | 75% | 2867 fps | 97.8% |
| Ramshot Big Game | <<locked>> | 94% | 54,737 psi | 86% | 2959 fps | 99.5% |
| Ramshot TAC | <<locked>> | 90% | 57,290 psi | 90% | 2930 fps | 98.3% |
| Ramshot Wild Boar | <<locked>> | 90% | 56,492 psi | 89% | 2949 fps | 99.7% |
| Ramshot X-Terminator | <<locked>> | 86% | 54,447 psi | 85% | 2864 fps | 99.5% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 34,911 psi | 55% | 1798 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 86% | 56,318 psi | 88% | 2900 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 96% | 56,956 psi | 89% | 2933 fps | 97.5% |
| ReloadSwiss RS 52 | <<locked>> | 92% | 55,419 psi | 87% | 3015 fps | 99.4% |
| ReloadSwiss RS 60 | <<locked>> | 98% | 55,042 psi | 86% | 3051 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 47,543 psi | 75% | 2894 fps | 97.6% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 48,559 psi | 76% | 2917 fps | 97.1% |
| Rottweil R 901 | <<locked>> | 90% | 56,811 psi | 89% | 2887 fps | 100% |
| Rottweil R 902 | <<locked>> | 94% | 56,202 psi | 88% | 2897 fps | 100% |
| Rottweil R 903 | <<locked>> | 98% | 54,317 psi | 85% | 2927 fps | 99.8% |
| Rottweil R 907ᴾ | <<locked>> | 100% | 55,492 psi | 87% | 2900 fps | 96% |
| Shooters World Long Rifleᴾ | <<locked>> | 100% | 52,910 psi | 83% | 2871 fps | 97.5% |
| Shooters World Match Rifle | <<locked>> | 92% | 56,579 psi | 89% | 2933 fps | 100% |
| Shooters World Precision | <<locked>> | 96% | 57,116 psi | 90% | 2933 fps | 100% |
| Shooters World SW4350ᴾ | <<locked>> | 100% | 50,111 psi | 79% | 2844 fps | 95.8% |
| Shooters World Tactical Rifle | <<locked>> | 84% | 56,449 psi | 88% | 2874 fps | 99.9% |
| SNPE Vectan BA6 1/2 | <<locked>> | 82% | 57,638 psi | 90% | 2549 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 82% | 55,608 psi | 87% | 2897 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 98% | 56,753 psi | 89% | 2995 fps | 99.7% |
| SNPE Vectan SP 3 | <<locked>> | 84% | 55,579 psi | 87% | 2848 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 90% | 55,463 psi | 87% | 2907 fps | 98.5% |
| SNPE Vectan SP 9 | <<locked>> | 92% | 56,014 psi | 88% | 2933 fps | 99.7% |
| SNPE Vectan Tubal 3000 | <<locked>> | 90% | 54,636 psi | 86% | 2802 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 96% | 54,433 psi | 85% | 2799 fps | 100% |
| SNPE Vectan Tubal 7000ᴾ | <<locked>> | 100% | 53,592 psi | 84% | 2825 fps | 96.2% |
| Somchem S321 | <<locked>> | 86% | 54,302 psi | 85% | 2897 fps | 100% |
| Somchem S335 | <<locked>> | 92% | 57,217 psi | 90% | 2848 fps | 100% |
| Somchem S341 | <<locked>> | 90% | 54,853 psi | 86% | 2900 fps | 99.5% |
| Somchem S355 | <<locked>> | 98% | 55,013 psi | 86% | 2927 fps | 99.8% |
| Somchem S365ᴾ | <<locked>> | 100% | 42,264 psi | 66% | 2812 fps | 99.4% |
| Vihtavuori N130 | <<locked>> | 86% | 54,418 psi | 85% | 2769 fps | 100% |
| Vihtavuori N133 | <<locked>> | 90% | 54,665 psi | 86% | 2789 fps | 100% |
| Vihtavuori N135 | <<locked>> | 94% | 55,521 psi | 87% | 2867 fps | 100% |
| Vihtavuori N140 | <<locked>> | 94% | 57,130 psi | 90% | 2887 fps | 100% |
| Vihtavuori N150ᴾ | <<locked>> | 100% | 56,652 psi | 89% | 2907 fps | 100% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 50,444 psi | 79% | 2874 fps | 98.2% |
| Vihtavuori N530 | <<locked>> | 90% | 57,305 psi | 90% | 2917 fps | 100% |
| Vihtavuori N540 | <<locked>> | 94% | 55,332 psi | 87% | 2887 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 49,269 psi | 77% | 2874 fps | 97.8% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 51,576 psi | 81% | 2861 fps | 99.7% |
| Winchester 748 | <<locked>> | 90% | 56,855 psi | 89% | 2963 fps | 100% |
| Winchester 760ᴾ | <<locked>> | 100% | 51,605 psi | 81% | 2930 fps | 96% |
| Winchester StaBALL Match | <<locked>> | 92% | 55,608 psi | 87% | 2940 fps | 99.9% |
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% | 42,612 psi | 67% | 2631 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 46,325 psi | 73% | 2733 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 34,664 psi | 54% | 2530 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 41,510 psi | 65% | 2684 fps | 99.7% |
| Accurate 2700 | <<locked>> | 92% | 52,895 psi | 83% | 2815 fps | 95.1% |
| Accurate 4064 | <<locked>> | 80% | 32,793 psi | 51% | 2513 fps | 99% |
| Accurate 4350 | <<locked>> | 94% | 38,566 psi | 60% | 2697 fps | 95.6% |
| Accurate LT-30 | <<locked>> | 80% | 51,285 psi | 80% | 2720 fps | 100% |
| Accurate LT-32 | <<locked>> | 80% | 51,735 psi | 81% | 2743 fps | 100% |
| ADI AR 2206H | <<locked>> | 80% | 39,160 psi | 61% | 2638 fps | 97.1% |
| ADI AR 2208 | <<locked>> | 82% | 35,418 psi | 56% | 2533 fps | 95% |
| ADI AR 2219 | <<locked>> | 80% | 51,648 psi | 81% | 2835 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 80% | 41,263 psi | 65% | 2654 fps | 98.6% |
| Alliant AR-Comp | <<locked>> | 80% | 40,567 psi | 64% | 2657 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 47,950 psi | 75% | 2858 fps | 99.3% |
| Alliant Power Pro 2000-MR | 50.6 gr | 82% | 37,753 psi | 59% | 2697 fps | 95.3% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 32,329 psi | 51% | 2497 fps | 95.9% |
| Alliant Reloder-10x | <<locked>> | 80% | 48,051 psi | 75% | 2730 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 35,012 psi | 55% | 2559 fps | 95.1% |
| Alliant Reloder-16 | <<locked>> | 94% | 39,349 psi | 62% | 2713 fps | 95.8% |
| Alliant Reloder-17 | <<locked>> | 86% | 34,214 psi | 54% | 2618 fps | 95.7% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 50,256 psi | 79% | 2710 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 38,116 psi | 60% | 2628 fps | 95.5% |
| Bofors RP3 | <<locked>> | 80% | 31,560 psi | 49% | 2490 fps | 95.7% |
| Bofors RP7 | <<locked>> | 98% | 52,185 psi | 82% | 2848 fps | 95.3% |
| Hodgdon Benchmark | <<locked>> | 80% | 43,308 psi | 68% | 2651 fps | 99.3% |
| Hodgdon BL-C2 | <<locked>> | 80% | 39,407 psi | 62% | 2664 fps | 98.8% |
| Hodgdon CFE223 | <<locked>> | 80% | 43,555 psi | 68% | 2805 fps | 97.7% |
| Hodgdon H322 | <<locked>> | 80% | 47,137 psi | 74% | 2762 fps | 100% |
| Hodgdon H335 | <<locked>> | 80% | 47,834 psi | 75% | 2782 fps | 100% |
| Hodgdon H380 | <<locked>> | 86% | 40,074 psi | 63% | 2664 fps | 95.3% |
| Hodgdon H414 | <<locked>> | 98% | 48,196 psi | 76% | 2871 fps | 95.1% |
| Hodgdon H4895 | <<locked>> | 80% | 39,479 psi | 62% | 2648 fps | 97.7% |
| Hodgdon Hybrid 100V | <<locked>> | 92% | 33,562 psi | 53% | 2546 fps | 95.6% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 35,273 psi | 55% | 2605 fps | 97% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,599 psi | 40% | 1568 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 37,971 psi | 60% | 2598 fps | 97.2% |
| IMR 3031 | <<locked>> | 80% | 38,479 psi | 60% | 2654 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 34,853 psi | 55% | 2513 fps | 95.1% |
| IMR 4166 Enduron | <<locked>> | 88% | 48,515 psi | 76% | 2756 fps | 95% |
| IMR 4198 | <<locked>> | 80% | 48,936 psi | 77% | 2700 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 96% | 51,068 psi | 80% | 2831 fps | 95.6% |
| IMR 4831 | <<locked>> | 94% | 37,231 psi | 58% | 2648 fps | 95.2% |
| IMR 4895 | <<locked>> | 80% | 35,839 psi | 56% | 2595 fps | 96.2% |
| IMR 8208 XBR | <<locked>> | 80% | 41,263 psi | 65% | 2654 fps | 98.6% |
| Lovex D073.5 | <<locked>> | 80% | 45,992 psi | 72% | 2736 fps | 99.8% |
| Lovex D073.6 | <<locked>> | 80% | 37,492 psi | 59% | 2615 fps | 99.2% |
| Lovex S060 | <<locked>> | 80% | 39,755 psi | 62% | 2582 fps | 97.2% |
| Lovex S062 | <<locked>> | 80% | 34,432 psi | 54% | 2520 fps | 97.1% |
| Lovex S065 | <<locked>> | 94% | 43,859 psi | 69% | 2713 fps | 95.5% |
| Lovex S070 | <<locked>> | 98% | 47,152 psi | 74% | 2792 fps | 95% |
| Norma 200 | <<locked>> | 80% | 54,302 psi | 85% | 2795 fps | 100% |
| Norma 201 | <<locked>> | 80% | 38,261 psi | 60% | 2592 fps | 98.1% |
| Norma 202 | <<locked>> | 80% | 38,363 psi | 60% | 2608 fps | 99.6% |
| Norma 203B | <<locked>> | 80% | 34,374 psi | 54% | 2549 fps | 95.6% |
| Norma URP | <<locked>> | 94% | 39,175 psi | 61% | 2700 fps | 95.6% |
| Ramshot Big Game | <<locked>> | 80% | 33,866 psi | 53% | 2556 fps | 95% |
| Ramshot TAC | <<locked>> | 82% | 43,874 psi | 69% | 2703 fps | 95.7% |
| Ramshot Wild Boar | <<locked>> | 80% | 40,176 psi | 63% | 2664 fps | 97.3% |
| Ramshot X-Terminator | <<locked>> | 80% | 44,672 psi | 70% | 2700 fps | 98.2% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 25,788 psi | 40% | 1608 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 46,383 psi | 73% | 2743 fps | 99.9% |
| ReloadSwiss RS 50 | <<locked>> | 90% | 46,789 psi | 73% | 2766 fps | 95.4% |
| ReloadSwiss RS 52 | 47.9 gr | 80% | 36,172 psi | 57% | 2654 fps | 95.5% |
| ReloadSwiss RS 60 | 48.6 gr | 80% | 29,747 psi | 47% | 2503 fps | 96.4% |
| ReloadSwiss RS 62 | <<locked>> | 94% | 38,624 psi | 61% | 2717 fps | 95.1% |
| ReloadSwiss RS 70 | <<locked>> | 96% | 42,424 psi | 66% | 2789 fps | 95.3% |
| Rottweil R 901 | <<locked>> | 80% | 41,887 psi | 66% | 2648 fps | 99.8% |
| Rottweil R 902 | <<locked>> | 80% | 36,230 psi | 57% | 2539 fps | 97.6% |
| Rottweil R 903 | <<locked>> | 82% | 31,676 psi | 50% | 2487 fps | 95.4% |
| Rottweil R 907 | <<locked>> | 98% | 52,185 psi | 82% | 2848 fps | 95.3% |
| Shooters World Long Rifle | <<locked>> | 94% | 43,859 psi | 69% | 2713 fps | 95.5% |
| Shooters World Match Rifle | <<locked>> | 80% | 37,492 psi | 59% | 2615 fps | 99.2% |
| Shooters World Precision | <<locked>> | 80% | 34,432 psi | 54% | 2520 fps | 97.1% |
| Shooters World SW4350 | <<locked>> | 98% | 47,152 psi | 74% | 2792 fps | 95% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 49,037 psi | 77% | 2759 fps | 99.5% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 54,882 psi | 86% | 2516 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 51,837 psi | 81% | 2841 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 84% | 35,462 psi | 56% | 2602 fps | 95.8% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 49,255 psi | 77% | 2756 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 82% | 41,872 psi | 66% | 2671 fps | 95.7% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 37,753 psi | 59% | 2602 fps | 96.6% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 40,030 psi | 63% | 2562 fps | 99.7% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 32,895 psi | 52% | 2425 fps | 99.4% |
| SNPE Vectan Tubal 7000 | <<locked>> | 98% | 49,922 psi | 78% | 2769 fps | 95.4% |
| Somchem S321 | <<locked>> | 80% | 44,280 psi | 69% | 2733 fps | 99.3% |
| Somchem S335 | <<locked>> | 80% | 39,465 psi | 62% | 2562 fps | 99.9% |
| Somchem S341 | <<locked>> | 80% | 38,827 psi | 61% | 2618 fps | 96.9% |
| Somchem S355 | <<locked>> | 82% | 32,851 psi | 51% | 2500 fps | 95.6% |
| Somchem S365 | <<locked>> | 90% | 30,516 psi | 48% | 2530 fps | 96% |
| Vihtavuori N130 | <<locked>> | 80% | 45,469 psi | 71% | 2641 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 40,248 psi | 63% | 2566 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 35,462 psi | 56% | 2539 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 36,376 psi | 57% | 2543 fps | 99.5% |
| Vihtavuori N150 | <<locked>> | 80% | 29,240 psi | 46% | 2388 fps | 95.7% |
| Vihtavuori N160 | <<locked>> | 92% | 38,508 psi | 60% | 2648 fps | 95.2% |
| Vihtavuori N530 | <<locked>> | 80% | 41,162 psi | 65% | 2648 fps | 98.7% |
| Vihtavuori N540 | <<locked>> | 80% | 34,911 psi | 55% | 2526 fps | 99% |
| Vihtavuori N550 | <<locked>> | 94% | 40,422 psi | 63% | 2707 fps | 95.7% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 32,010 psi | 50% | 2464 fps | 95% |
| Winchester 748 | <<locked>> | 80% | 40,161 psi | 63% | 2684 fps | 99.1% |
| Winchester 760 | <<locked>> | 98% | 48,196 psi | 76% | 2871 fps | 95.1% |
| Winchester StaBALL Match | <<locked>> | 80% | 36,898 psi | 58% | 2602 fps | 97.1% |
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 103 powders for .300 RCM loaded with the .308 | 155.8gr | Peregrine Glider (Glider GRM). Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 3,077 fps; across all powders the maximum-charge window runs from 1,755 fps to 3,077 fps. Accurate 4350 gives the best case fill at 100 %, and 103 of the 103 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (440 MPa), the top charges use 54–90 %, leaving at least 10 % headroom. The 156.0 gr projectile in 0.308" calls for a 1:10.5 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, ReloadSwiss RS 52, ReloadSwiss RS 60 rank at the top here: for .300 RCM with the .308 | 155.8gr | Peregrine Glider (Glider GRM) 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.