Load Specifications
Bullet Manufacturer:Peregrine
Bullet Weight:171 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:1:14.5
Load data in caliber .300 RCM with .308 | 171gr | Peregrine Backup (VRG-2) bullet and 102 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: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2015 | <<locked>> | 86% | 57,392 psi | 90% | 2740 fps | 100% |
| Accurate 2460 | <<locked>> | 82% | 55,912 psi | 88% | 2769 fps | 100% |
| Accurate 2495 | <<locked>> | 90% | 55,825 psi | 87% | 2762 fps | 100% |
| Accurate 2520 | <<locked>> | 84% | 54,418 psi | 85% | 2782 fps | 100% |
| Accurate 2700 | <<locked>> | 90% | 55,564 psi | 87% | 2769 fps | 97.2% |
| Accurate 4064 | <<locked>> | 92% | 55,622 psi | 87% | 2808 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 55,854 psi | 88% | 2897 fps | 99.7% |
| ADI AR 2206H | <<locked>> | 88% | 56,666 psi | 89% | 2844 fps | 100% |
| ADI AR 2208 | <<locked>> | 92% | 54,346 psi | 85% | 2795 fps | 99.8% |
| ADI Benchmark 8208 | <<locked>> | 86% | 55,753 psi | 87% | 2795 fps | 100% |
| Alliant AR-Comp | <<locked>> | 86% | 56,623 psi | 89% | 2769 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 90% | 56,637 psi | 89% | 2969 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 94% | 57,595 psi | 90% | 2864 fps | 100% |
| Alliant Reloder-10x | <<locked>> | 82% | 57,145 psi | 90% | 2743 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 90% | 54,679 psi | 86% | 2838 fps | 99.9% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 53,679 psi | 84% | 2900 fps | 99.8% |
| Alliant Reloder-17 | <<locked>> | 96% | 54,926 psi | 86% | 2936 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 38,116 psi | 60% | 2635 fps | 98.6% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 42,612 psi | 67% | 2792 fps | 97.8% |
| Baschieri & Pellagri 107 | <<locked>> | 88% | 56,753 psi | 89% | 2864 fps | 99.8% |
| Bofors RP3 | <<locked>> | 92% | 54,766 psi | 86% | 2831 fps | 100% |
| Bofors RP7 | <<locked>> | 96% | 54,911 psi | 86% | 2802 fps | 97.4% |
| Hodgdon Benchmark | <<locked>> | 86% | 57,493 psi | 90% | 2779 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 86% | 55,013 psi | 86% | 2825 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 84% | 57,377 psi | 90% | 2930 fps | 100% |
| Hodgdon H322 | <<locked>> | 82% | 56,391 psi | 88% | 2785 fps | 100% |
| Hodgdon H335 | <<locked>> | 82% | 57,638 psi | 90% | 2815 fps | 100% |
| Hodgdon H380 | <<locked>> | 92% | 55,883 psi | 88% | 2848 fps | 99.5% |
| Hodgdon H414 | <<locked>> | 98% | 55,492 psi | 87% | 2897 fps | 98.1% |
| Hodgdon H4350 | <<locked>> | 96% | 56,101 psi | 88% | 2858 fps | 96.9% |
| Hodgdon H4895 | <<locked>> | 88% | 57,232 psi | 90% | 2854 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 49,835 psi | 78% | 2776 fps | 99.9% |
| Hodgdon LEVERevolution | <<locked>> | 90% | 56,942 psi | 89% | 2894 fps | 100% |
| Hodgdon Superformance | <<locked>> | 98% | 56,420 psi | 88% | 2936 fps | 97.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,389 psi | 55% | 1709 fps | 100% |
| Hodgdon VARGET | <<locked>> | 88% | 55,303 psi | 87% | 2812 fps | 100% |
| IMR 3031 | <<locked>> | 88% | 57,246 psi | 90% | 2835 fps | 100% |
| IMR 4064 | <<locked>> | 92% | 57,232 psi | 90% | 2828 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 90% | 57,493 psi | 90% | 2815 fps | 98.2% |
| IMR 4198 | <<locked>> | 82% | 57,058 psi | 89% | 2700 fps | 100% |
| IMR 4350ᴾ | <<locked>> | 100% | 55,274 psi | 87% | 2828 fps | 97.5% |
| IMR 4451 Enduron | <<locked>> | 96% | 57,043 psi | 89% | 2838 fps | 98.1% |
| IMR 4831ᴾ | <<locked>> | 100% | 52,794 psi | 83% | 2835 fps | 99.6% |
| IMR 4895 | <<locked>> | 90% | 56,086 psi | 88% | 2867 fps | 100% |
| IMR 8208 XBR | <<locked>> | 86% | 55,753 psi | 87% | 2795 fps | 100% |
| Lovex D073.5 | <<locked>> | 82% | 55,753 psi | 87% | 2779 fps | 100% |
| Lovex D073.6 | <<locked>> | 88% | 56,565 psi | 89% | 2822 fps | 100% |
| Lovex S060 | <<locked>> | 88% | 56,391 psi | 88% | 2776 fps | 100% |
| Lovex S062 | <<locked>> | 92% | 56,797 psi | 89% | 2822 fps | 100% |
| Lovex S065 | <<locked>> | 98% | 56,057 psi | 88% | 2825 fps | 99% |
| Lovex S070ᴾ | <<locked>> | 100% | 57,174 psi | 90% | 2864 fps | 98.4% |
| Norma 201 | <<locked>> | 88% | 55,347 psi | 87% | 2792 fps | 100% |
| Norma 202 | <<locked>> | 88% | 56,072 psi | 88% | 2792 fps | 100% |
| Norma 203B | <<locked>> | 92% | 57,682 psi | 90% | 2877 fps | 100% |
| Norma 204ᴾ | <<locked>> | 100% | 56,028 psi | 88% | 2877 fps | 96.3% |
| Norma URPᴾ | <<locked>> | 100% | 55,129 psi | 86% | 2887 fps | 99.7% |
| Ramshot Big Game | <<locked>> | 90% | 54,621 psi | 86% | 2851 fps | 100% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 53,867 psi | 84% | 2881 fps | 98.6% |
| Ramshot TAC | <<locked>> | 86% | 56,144 psi | 88% | 2822 fps | 99.2% |
| Ramshot Wild Boar | <<locked>> | 86% | 55,753 psi | 87% | 2835 fps | 100% |
| Ramshot X-Terminator | <<locked>> | 84% | 56,623 psi | 89% | 2799 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,824 psi | 56% | 1752 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 82% | 55,303 psi | 87% | 2779 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 92% | 56,202 psi | 88% | 2828 fps | 98.6% |
| ReloadSwiss RS 52 | <<locked>> | 88% | 55,419 psi | 87% | 2907 fps | 99.9% |
| ReloadSwiss RS 60 | <<locked>> | 94% | 54,955 psi | 86% | 2940 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 55,651 psi | 87% | 2920 fps | 99.6% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 55,637 psi | 87% | 2953 fps | 99.5% |
| Rottweil R 901 | <<locked>> | 86% | 55,999 psi | 88% | 2769 fps | 100% |
| Rottweil R 902 | <<locked>> | 90% | 55,796 psi | 87% | 2789 fps | 100% |
| Rottweil R 903 | <<locked>> | 94% | 54,563 psi | 86% | 2825 fps | 100% |
| Rottweil R 907 | <<locked>> | 96% | 54,911 psi | 86% | 2802 fps | 97.4% |
| Shooters World Long Rifle | <<locked>> | 98% | 56,057 psi | 88% | 2825 fps | 99% |
| Shooters World Match Rifle | <<locked>> | 88% | 56,565 psi | 89% | 2822 fps | 100% |
| Shooters World Precision | <<locked>> | 92% | 56,797 psi | 89% | 2822 fps | 100% |
| Shooters World SW4350ᴾ | <<locked>> | 100% | 57,174 psi | 90% | 2864 fps | 98.4% |
| SNPE Vectan SP 11 | <<locked>> | 94% | 56,449 psi | 88% | 2884 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 86% | 54,389 psi | 85% | 2795 fps | 99.3% |
| SNPE Vectan SP 9 | <<locked>> | 88% | 55,274 psi | 87% | 2818 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 88% | 56,985 psi | 89% | 2730 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 94% | 57,348 psi | 90% | 2726 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 98% | 56,521 psi | 89% | 2779 fps | 98.1% |
| Somchem S321 | <<locked>> | 84% | 57,174 psi | 90% | 2831 fps | 100% |
| Somchem S335 | <<locked>> | 88% | 56,318 psi | 88% | 2726 fps | 100% |
| Somchem S341 | <<locked>> | 86% | 54,114 psi | 85% | 2789 fps | 99.9% |
| Somchem S355 | <<locked>> | 94% | 54,781 psi | 86% | 2818 fps | 100% |
| Somchem S365ᴾ | <<locked>> | 100% | 49,356 psi | 77% | 2835 fps | 100% |
| Vihtavuori N130 | <<locked>> | 84% | 56,652 psi | 89% | 2690 fps | 100% |
| Vihtavuori N133 | <<locked>> | 88% | 57,232 psi | 90% | 2713 fps | 100% |
| Vihtavuori N135 | <<locked>> | 90% | 55,651 psi | 87% | 2753 fps | 100% |
| Vihtavuori N140 | <<locked>> | 90% | 56,405 psi | 88% | 2769 fps | 100% |
| Vihtavuori N150 | <<locked>> | 96% | 56,652 psi | 89% | 2802 fps | 100% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 57,711 psi | 90% | 2881 fps | 99.8% |
| Vihtavuori N530 | <<locked>> | 86% | 56,391 psi | 88% | 2799 fps | 100% |
| Vihtavuori N540 | <<locked>> | 90% | 54,563 psi | 86% | 2766 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 56,521 psi | 89% | 2887 fps | 99.6% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 41,510 psi | 65% | 2707 fps | 98.5% |
| Winchester 6.5 StaBALL | <<locked>> | 98% | 54,447 psi | 85% | 2812 fps | 100% |
| Winchester 748 | <<locked>> | 86% | 56,449 psi | 88% | 2848 fps | 100% |
| Winchester 760 | <<locked>> | 98% | 55,492 psi | 87% | 2897 fps | 98.1% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 33,968 psi | 53% | 2625 fps | 98.2% |
| Winchester StaBALL Match | <<locked>> | 88% | 54,955 psi | 86% | 2825 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% | 47,732 psi | 75% | 2605 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 52,199 psi | 82% | 2720 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 39,842 psi | 62% | 2523 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 47,282 psi | 74% | 2680 fps | 100% |
| Accurate 2700 | <<locked>> | 84% | 45,498 psi | 71% | 2605 fps | 95% |
| Accurate 4064 | <<locked>> | 80% | 37,724 psi | 59% | 2516 fps | 100% |
| Accurate 4350 | <<locked>> | 86% | 33,982 psi | 53% | 2500 fps | 95.6% |
| ADI AR 2206H | <<locked>> | 80% | 43,990 psi | 69% | 2638 fps | 99.1% |
| ADI AR 2208 | <<locked>> | 80% | 37,260 psi | 58% | 2487 fps | 97.2% |
| ADI Benchmark 8208 | <<locked>> | 80% | 46,151 psi | 72% | 2648 fps | 99.9% |
| Alliant AR-Comp | <<locked>> | 80% | 46,369 psi | 73% | 2631 fps | 100% |
| Alliant Power Pro 2000-MR | 51.7 gr | 80% | 39,856 psi | 62% | 2664 fps | 97.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 36,898 psi | 58% | 2510 fps | 98.5% |
| Alliant Reloder-10x | <<locked>> | 80% | 53,563 psi | 84% | 2697 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 39,697 psi | 62% | 2572 fps | 98% |
| Alliant Reloder-16 | <<locked>> | 86% | 34,693 psi | 54% | 2520 fps | 95.8% |
| Alliant Reloder-17 | 50.9 gr | 80% | 31,633 psi | 50% | 2470 fps | 96.4% |
| Alliant Reloder-23 | <<locked>> | 92% | 29,573 psi | 46% | 2411 fps | 95.2% |
| Alliant Reloder-26 | <<locked>> | 96% | 36,912 psi | 58% | 2661 fps | 95.9% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 43,294 psi | 68% | 2641 fps | 98.3% |
| Bofors RP3 | <<locked>> | 80% | 36,303 psi | 57% | 2510 fps | 98.5% |
| Bofors RP7 | <<locked>> | 90% | 45,339 psi | 71% | 2641 fps | 95.2% |
| Hodgdon Benchmark | <<locked>> | 80% | 47,761 psi | 75% | 2635 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 44,730 psi | 70% | 2664 fps | 99.9% |
| Hodgdon CFE223 | <<locked>> | 80% | 49,864 psi | 78% | 2815 fps | 99.6% |
| Hodgdon H322 | <<locked>> | 80% | 52,837 psi | 83% | 2740 fps | 100% |
| Hodgdon H335 | <<locked>> | 80% | 53,824 psi | 84% | 2766 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 37,202 psi | 58% | 2513 fps | 96% |
| Hodgdon H414 | <<locked>> | 90% | 42,322 psi | 66% | 2671 fps | 95.2% |
| Hodgdon H4350 | <<locked>> | 92% | 49,429 psi | 77% | 2749 fps | 95.5% |
| Hodgdon H4895 | <<locked>> | 80% | 44,425 psi | 70% | 2651 fps | 99.5% |
| Hodgdon Hybrid 100V | <<locked>> | 84% | 29,544 psi | 46% | 2359 fps | 95.6% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 40,306 psi | 63% | 2618 fps | 99.3% |
| Hodgdon Superformance | <<locked>> | 92% | 45,194 psi | 71% | 2746 fps | 95.3% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,281 psi | 41% | 1526 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 42,612 psi | 67% | 2602 fps | 99.2% |
| IMR 3031 | <<locked>> | 80% | 43,947 psi | 69% | 2641 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 39,102 psi | 61% | 2520 fps | 97.9% |
| IMR 4166 Enduron | <<locked>> | 82% | 44,585 psi | 70% | 2598 fps | 95.7% |
| IMR 4198 | <<locked>> | 80% | 54,027 psi | 85% | 2657 fps | 100% |
| IMR 4350 | <<locked>> | 94% | 45,745 psi | 72% | 2671 fps | 95.4% |
| IMR 4451 Enduron | <<locked>> | 88% | 44,527 psi | 70% | 2628 fps | 95.6% |
| IMR 4831 | <<locked>> | 86% | 33,141 psi | 52% | 2461 fps | 95.3% |
| IMR 4895 | <<locked>> | 80% | 40,683 psi | 64% | 2602 fps | 98.7% |
| IMR 8208 XBR | <<locked>> | 80% | 46,151 psi | 72% | 2648 fps | 99.9% |
| Lovex D073.5 | <<locked>> | 80% | 51,996 psi | 81% | 2726 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 43,018 psi | 67% | 2618 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 44,193 psi | 69% | 2579 fps | 99.2% |
| Lovex S062 | <<locked>> | 80% | 39,102 psi | 61% | 2526 fps | 99.2% |
| Lovex S065 | <<locked>> | 86% | 38,595 psi | 60% | 2516 fps | 95.5% |
| Lovex S070 | <<locked>> | 90% | 41,423 psi | 65% | 2595 fps | 95.1% |
| Norma 201 | <<locked>> | 80% | 42,873 psi | 67% | 2589 fps | 99.7% |
| Norma 202 | <<locked>> | 80% | 43,366 psi | 68% | 2598 fps | 100% |
| Norma 203B | <<locked>> | 80% | 39,044 psi | 61% | 2562 fps | 98.3% |
| Norma 204 | <<locked>> | 98% | 52,199 psi | 82% | 2818 fps | 95.5% |
| Norma URP | <<locked>> | 86% | 34,476 psi | 54% | 2503 fps | 95.5% |
| Ramshot Big Game | <<locked>> | 80% | 38,508 psi | 60% | 2572 fps | 98% |
| Ramshot Hunter | <<locked>> | 92% | 41,307 psi | 65% | 2657 fps | 95.8% |
| Ramshot TAC | <<locked>> | 80% | 46,064 psi | 72% | 2654 fps | 97.6% |
| Ramshot Wild Boar | <<locked>> | 80% | 45,484 psi | 71% | 2671 fps | 99.3% |
| Ramshot X-Terminator | <<locked>> | 80% | 49,647 psi | 78% | 2694 fps | 99.6% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,542 psi | 42% | 1562 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 51,634 psi | 81% | 2723 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 40,408 psi | 63% | 2556 fps | 95.2% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 41,872 psi | 66% | 2677 fps | 98.4% |
| ReloadSwiss RS 60 | 50.9 gr | 80% | 33,765 psi | 53% | 2539 fps | 99.3% |
| ReloadSwiss RS 62 | <<locked>> | 86% | 33,939 psi | 53% | 2516 fps | 95.1% |
| ReloadSwiss RS 70 | <<locked>> | 88% | 36,680 psi | 57% | 2585 fps | 95.1% |
| Rottweil R 901 | <<locked>> | 80% | 46,601 psi | 73% | 2628 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 40,712 psi | 64% | 2539 fps | 99.4% |
| Rottweil R 903 | <<locked>> | 80% | 34,026 psi | 53% | 2451 fps | 97.7% |
| Rottweil R 907 | <<locked>> | 90% | 45,339 psi | 71% | 2641 fps | 95.2% |
| Shooters World Long Rifle | <<locked>> | 86% | 38,595 psi | 60% | 2516 fps | 95.5% |
| Shooters World Match Rifle | <<locked>> | 80% | 43,018 psi | 67% | 2618 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 39,102 psi | 61% | 2526 fps | 99.2% |
| Shooters World SW4350 | <<locked>> | 90% | 41,423 psi | 65% | 2595 fps | 95.1% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 35,360 psi | 55% | 2507 fps | 97.2% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 44,135 psi | 69% | 2625 fps | 97.7% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 42,583 psi | 67% | 2608 fps | 98.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 44,353 psi | 70% | 2543 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 36,796 psi | 58% | 2411 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 90% | 43,511 psi | 68% | 2569 fps | 95.4% |
| Somchem S321 | <<locked>> | 80% | 49,922 psi | 78% | 2726 fps | 100% |
| Somchem S335 | <<locked>> | 80% | 43,918 psi | 69% | 2546 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 44,048 psi | 69% | 2625 fps | 99.1% |
| Somchem S355 | <<locked>> | 80% | 35,012 psi | 55% | 2461 fps | 97.7% |
| Somchem S365 | <<locked>> | 82% | 26,934 psi | 42% | 2339 fps | 95.9% |
| Vihtavuori N130 | <<locked>> | 80% | 50,154 psi | 79% | 2602 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 44,744 psi | 70% | 2539 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 40,263 psi | 63% | 2523 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 40,901 psi | 64% | 2533 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 33,228 psi | 52% | 2398 fps | 98.4% |
| Vihtavuori N160 | <<locked>> | 84% | 33,852 psi | 53% | 2454 fps | 95.2% |
| Vihtavuori N530 | <<locked>> | 80% | 46,180 psi | 72% | 2644 fps | 99.9% |
| Vihtavuori N540 | <<locked>> | 80% | 39,392 psi | 62% | 2523 fps | 100% |
| Vihtavuori N550 | <<locked>> | 86% | 35,462 psi | 56% | 2507 fps | 95.6% |
| Vihtavuori N555 | <<locked>> | 92% | 31,821 psi | 50% | 2490 fps | 95.5% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 29,646 psi | 46% | 2326 fps | 95.8% |
| Winchester 748 | <<locked>> | 80% | 45,730 psi | 72% | 2687 fps | 100% |
| Winchester 760 | <<locked>> | 90% | 42,322 psi | 66% | 2671 fps | 95.2% |
| Winchester StaBALL HD | <<locked>> | 96% | 29,762 psi | 47% | 2493 fps | 95.9% |
| Winchester StaBALL Match | <<locked>> | 80% | 41,916 psi | 66% | 2612 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 102 powders for .300 RCM loaded with the .308 | 171gr | Peregrine Backup (VRG-2). Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 2,969 fps; across all powders the maximum-charge window runs from 1,709 fps to 2,969 fps. Accurate 4350 gives the best case fill at 100 %, and 102 of the 102 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (440 MPa), the top charges use 53–90 %, leaving at least 10 % headroom. The 171.0 gr projectile in 0.308" calls for a 1:14.5 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 .300 RCM with the .308 | 171gr | Peregrine Backup (VRG-2) 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.