Load Specifications
Bullet Manufacturer:Peregrine
Bullet Weight:160 gr
Bullet Diameter:0.306"
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 .306 | 160gr | Peregrine Plainsmaster (VLR-4) 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 60 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.
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% | 55,985 psi | 88% | 2799 fps | 100% |
| Accurate 2460 | <<locked>> | 84% | 54,244 psi | 85% | 2822 fps | 100% |
| Accurate 2495 | <<locked>> | 94% | 56,985 psi | 89% | 2858 fps | 100% |
| Accurate 2520 | <<locked>> | 88% | 56,347 psi | 88% | 2887 fps | 100% |
| Accurate 4064 | <<locked>> | 96% | 56,666 psi | 89% | 2900 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 49,284 psi | 77% | 2867 fps | 98.4% |
| Accurate LT-30 | <<locked>> | 82% | 55,506 psi | 87% | 2743 fps | 100% |
| Accurate LT-32 | <<locked>> | 82% | 55,941 psi | 88% | 2772 fps | 100% |
| ADI AR 2206H | <<locked>> | 90% | 55,172 psi | 86% | 2894 fps | 99.7% |
| ADI AR 2208 | <<locked>> | 96% | 56,115 psi | 88% | 2887 fps | 99.5% |
| ADI AR 2219 | <<locked>> | 82% | 56,536 psi | 89% | 2867 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 88% | 54,317 psi | 85% | 2848 fps | 100% |
| Alliant AR-Comp | <<locked>> | 88% | 54,331 psi | 85% | 2825 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 84% | 56,057 psi | 88% | 2956 fps | 99.9% |
| Alliant Power Pro 2000-MR | <<locked>> | 92% | 54,650 psi | 86% | 3009 fps | 99.5% |
| Alliant Reloder- TS 15.5 | <<locked>> | 96% | 55,463 psi | 87% | 2907 fps | 100% |
| Alliant Reloder-10x | <<locked>> | 84% | 55,593 psi | 87% | 2802 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 94% | 56,420 psi | 88% | 2933 fps | 99.6% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 48,602 psi | 76% | 2877 fps | 98.5% |
| Alliant Reloder-17ᴾ | <<locked>> | 100% | 56,463 psi | 88% | 3031 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 82% | 54,549 psi | 85% | 2740 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 90% | 54,868 psi | 86% | 2907 fps | 99.2% |
| Bofors RP3 | <<locked>> | 96% | 56,188 psi | 88% | 2927 fps | 100% |
| Bofors RP7ᴾ | <<locked>> | 100% | 56,681 psi | 89% | 2887 fps | 96.5% |
| Hodgdon Benchmark | <<locked>> | 88% | 56,304 psi | 88% | 2835 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 90% | 57,116 psi | 90% | 2930 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 86% | 55,158 psi | 86% | 2972 fps | 99.6% |
| Hodgdon H322 | <<locked>> | 84% | 54,940 psi | 86% | 2844 fps | 100% |
| Hodgdon H335 | <<locked>> | 84% | 56,130 psi | 88% | 2874 fps | 100% |
| Hodgdon H380 | <<locked>> | 96% | 57,682 psi | 90% | 2940 fps | 99.1% |
| Hodgdon H414ᴾ | <<locked>> | 100% | 52,881 psi | 83% | 2923 fps | 96.6% |
| Hodgdon H4895 | <<locked>> | 90% | 55,724 psi | 87% | 2907 fps | 99.9% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 44,541 psi | 70% | 2753 fps | 98.9% |
| Hodgdon LEVERevolution | <<locked>> | 92% | 54,607 psi | 86% | 2936 fps | 100% |
| Hodgdon Superformanceᴾ | <<locked>> | 100% | 54,317 psi | 85% | 2959 fps | 96.2% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,853 psi | 55% | 1739 fps | 100% |
| Hodgdon VARGET | <<locked>> | 92% | 57,319 psi | 90% | 2910 fps | 99.9% |
| IMR 3031 | <<locked>> | 90% | 55,129 psi | 86% | 2890 fps | 100% |
| IMR 4064 | <<locked>> | 94% | 55,637 psi | 87% | 2874 fps | 99.6% |
| IMR 4166 Enduron | <<locked>> | 92% | 56,028 psi | 88% | 2851 fps | 97% |
| IMR 4198 | <<locked>> | 84% | 55,941 psi | 88% | 2762 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 98% | 55,288 psi | 87% | 2871 fps | 96.8% |
| IMR 4831ᴾ | <<locked>> | 100% | 46,876 psi | 73% | 2808 fps | 98.1% |
| IMR 4895 | <<locked>> | 92% | 54,157 psi | 85% | 2910 fps | 99.7% |
| IMR 8208 XBR | <<locked>> | 88% | 54,317 psi | 85% | 2848 fps | 100% |
| Lovex D073.5 | <<locked>> | 84% | 54,143 psi | 85% | 2831 fps | 100% |
| Lovex D073.6 | <<locked>> | 90% | 54,433 psi | 85% | 2871 fps | 100% |
| Lovex S060 | <<locked>> | 90% | 55,027 psi | 86% | 2822 fps | 99.7% |
| Lovex S062 | <<locked>> | 94% | 54,998 psi | 86% | 2867 fps | 100% |
| Lovex S065ᴾ | <<locked>> | 100% | 54,070 psi | 85% | 2858 fps | 98% |
| Lovex S070ᴾ | <<locked>> | 100% | 51,300 psi | 80% | 2835 fps | 96.4% |
| Norma 201 | <<locked>> | 92% | 57,217 psi | 90% | 2890 fps | 100% |
| Norma 202 | <<locked>> | 90% | 54,157 psi | 85% | 2844 fps | 100% |
| Norma 203B | <<locked>> | 94% | 55,550 psi | 87% | 2920 fps | 99.8% |
| Norma URPᴾ | <<locked>> | 100% | 48,834 psi | 77% | 2858 fps | 98.3% |
| Ramshot Big Game | <<locked>> | 94% | 56,130 psi | 88% | 2943 fps | 99.8% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 48,283 psi | 76% | 2848 fps | 96.5% |
| Ramshot TAC | <<locked>> | 88% | 54,810 psi | 86% | 2864 fps | 98.2% |
| Ramshot Wild Boar | <<locked>> | 90% | 57,725 psi | 90% | 2936 fps | 99.9% |
| Ramshot X-Terminator | <<locked>> | 86% | 55,535 psi | 87% | 2851 fps | 99.7% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 34,983 psi | 55% | 1778 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 86% | 57,479 psi | 90% | 2884 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 94% | 54,505 psi | 85% | 2864 fps | 97.4% |
| ReloadSwiss RS 52 | <<locked>> | 92% | 56,927 psi | 89% | 3002 fps | 99.7% |
| ReloadSwiss RS 60 | <<locked>> | 98% | 56,362 psi | 88% | 3035 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 49,153 psi | 77% | 2890 fps | 98.2% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 49,951 psi | 78% | 2913 fps | 97.8% |
| Rottweil R 901 | <<locked>> | 88% | 54,302 psi | 85% | 2822 fps | 100% |
| Rottweil R 902 | <<locked>> | 94% | 57,406 psi | 90% | 2881 fps | 100% |
| Rottweil R 903 | <<locked>> | 98% | 55,680 psi | 87% | 2910 fps | 99.9% |
| Rottweil R 907ᴾ | <<locked>> | 100% | 56,681 psi | 89% | 2887 fps | 96.5% |
| Shooters World Long Rifleᴾ | <<locked>> | 100% | 54,070 psi | 85% | 2858 fps | 98% |
| Shooters World Match Rifle | <<locked>> | 90% | 54,433 psi | 85% | 2871 fps | 100% |
| Shooters World Precision | <<locked>> | 94% | 54,998 psi | 86% | 2867 fps | 100% |
| Shooters World SW4350ᴾ | <<locked>> | 100% | 51,300 psi | 80% | 2835 fps | 96.4% |
| Shooters World Tactical Rifle | <<locked>> | 84% | 57,595 psi | 90% | 2858 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 82% | 56,768 psi | 89% | 2877 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 96% | 54,346 psi | 85% | 2927 fps | 99.7% |
| SNPE Vectan SP 3 | <<locked>> | 84% | 56,753 psi | 89% | 2825 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 90% | 56,739 psi | 89% | 2894 fps | 98.9% |
| SNPE Vectan SP 9 | <<locked>> | 92% | 57,217 psi | 90% | 2920 fps | 99.8% |
| SNPE Vectan Tubal 3000 | <<locked>> | 90% | 55,724 psi | 87% | 2785 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 96% | 55,579 psi | 87% | 2779 fps | 100% |
| SNPE Vectan Tubal 7000ᴾ | <<locked>> | 100% | 54,824 psi | 86% | 2815 fps | 96.7% |
| Somchem S321 | <<locked>> | 86% | 55,477 psi | 87% | 2884 fps | 100% |
| Somchem S335 | <<locked>> | 90% | 54,708 psi | 86% | 2782 fps | 100% |
| Somchem S341 | <<locked>> | 90% | 56,086 psi | 88% | 2884 fps | 99.7% |
| Somchem S355 | <<locked>> | 98% | 56,318 psi | 88% | 2913 fps | 99.9% |
| Somchem S365ᴾ | <<locked>> | 100% | 43,671 psi | 68% | 2808 fps | 99.7% |
| Vihtavuori N130 | <<locked>> | 86% | 55,492 psi | 87% | 2749 fps | 100% |
| Vihtavuori N133 | <<locked>> | 90% | 55,782 psi | 87% | 2769 fps | 100% |
| Vihtavuori N135 | <<locked>> | 94% | 56,840 psi | 89% | 2848 fps | 100% |
| Vihtavuori N140 | <<locked>> | 92% | 54,665 psi | 86% | 2822 fps | 100% |
| Vihtavuori N150 | <<locked>> | 98% | 54,389 psi | 85% | 2844 fps | 100% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 51,721 psi | 81% | 2861 fps | 98.6% |
| Vihtavuori N530 | <<locked>> | 88% | 55,013 psi | 86% | 2851 fps | 100% |
| Vihtavuori N540 | <<locked>> | 94% | 56,536 psi | 89% | 2867 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 50,502 psi | 79% | 2861 fps | 98.3% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 36,187 psi | 57% | 2661 fps | 95.9% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 52,692 psi | 83% | 2848 fps | 99.8% |
| Winchester 748 | <<locked>> | 88% | 54,404 psi | 85% | 2897 fps | 100% |
| Winchester 760ᴾ | <<locked>> | 100% | 53,185 psi | 83% | 2927 fps | 96.7% |
| Winchester StaBALL Match | <<locked>> | 92% | 56,869 psi | 89% | 2923 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% | 43,323 psi | 68% | 2612 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 47,413 psi | 74% | 2720 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 35,433 psi | 56% | 2513 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 42,583 psi | 67% | 2671 fps | 99.9% |
| Accurate 4064 | <<locked>> | 80% | 33,533 psi | 53% | 2500 fps | 99.3% |
| Accurate 4350 | <<locked>> | 92% | 36,869 psi | 58% | 2628 fps | 95.4% |
| Accurate LT-30 | <<locked>> | 80% | 51,938 psi | 81% | 2697 fps | 100% |
| Accurate LT-32 | <<locked>> | 80% | 52,344 psi | 82% | 2720 fps | 100% |
| ADI AR 2206H | <<locked>> | 80% | 40,059 psi | 63% | 2628 fps | 97.6% |
| ADI AR 2208 | <<locked>> | 82% | 36,230 psi | 57% | 2523 fps | 95.7% |
| ADI AR 2219 | <<locked>> | 80% | 52,794 psi | 83% | 2815 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 80% | 42,192 psi | 66% | 2641 fps | 99% |
| Alliant AR-Comp | <<locked>> | 80% | 41,408 psi | 65% | 2638 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 49,110 psi | 77% | 2844 fps | 99.5% |
| Alliant Power Pro 2000-MR | 49.5 gr | 80% | 36,129 psi | 57% | 2631 fps | 95.1% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 33,141 psi | 52% | 2487 fps | 96.5% |
| Alliant Reloder-10x | <<locked>> | 80% | 49,081 psi | 77% | 2710 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 35,868 psi | 56% | 2552 fps | 95.8% |
| Alliant Reloder-16 | <<locked>> | 92% | 37,695 psi | 59% | 2648 fps | 95.6% |
| Alliant Reloder-17 | <<locked>> | 84% | 32,779 psi | 51% | 2552 fps | 95.5% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 51,213 psi | 80% | 2694 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 39,044 psi | 61% | 2621 fps | 96.2% |
| Bofors RP3 | <<locked>> | 80% | 32,445 psi | 51% | 2484 fps | 96.4% |
| Bofors RP7 | <<locked>> | 96% | 49,850 psi | 78% | 2779 fps | 95.1% |
| Hodgdon Benchmark | <<locked>> | 80% | 44,164 psi | 69% | 2638 fps | 99.6% |
| Hodgdon BL-C2 | <<locked>> | 80% | 40,364 psi | 63% | 2654 fps | 99.1% |
| Hodgdon CFE223 | <<locked>> | 80% | 44,396 psi | 70% | 2789 fps | 98.1% |
| Hodgdon H322 | <<locked>> | 80% | 48,153 psi | 75% | 2746 fps | 100% |
| Hodgdon H335 | <<locked>> | 80% | 48,907 psi | 77% | 2766 fps | 100% |
| Hodgdon H380 | <<locked>> | 84% | 38,305 psi | 60% | 2598 fps | 95.1% |
| Hodgdon H414 | <<locked>> | 96% | 46,180 psi | 72% | 2805 fps | 95% |
| Hodgdon H4895 | <<locked>> | 80% | 40,364 psi | 63% | 2638 fps | 98.2% |
| Hodgdon Hybrid 100V | <<locked>> | 90% | 32,343 psi | 51% | 2487 fps | 95.5% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 36,158 psi | 57% | 2595 fps | 97.6% |
| Hodgdon Superformance | <<locked>> | 98% | 50,459 psi | 79% | 2894 fps | 95.3% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,860 psi | 41% | 1555 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 38,798 psi | 61% | 2589 fps | 97.7% |
| IMR 3031 | <<locked>> | 80% | 39,523 psi | 62% | 2641 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 35,665 psi | 56% | 2507 fps | 95.8% |
| IMR 4166 Enduron | <<locked>> | 88% | 49,472 psi | 78% | 2743 fps | 95.6% |
| IMR 4198 | <<locked>> | 80% | 49,922 psi | 78% | 2680 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 94% | 48,849 psi | 77% | 2762 fps | 95.4% |
| IMR 4831 | <<locked>> | 92% | 35,868 psi | 56% | 2589 fps | 95.1% |
| IMR 4895 | <<locked>> | 80% | 36,695 psi | 57% | 2582 fps | 96.8% |
| IMR 8208 XBR | <<locked>> | 80% | 42,192 psi | 66% | 2641 fps | 99% |
| Lovex D073.5 | <<locked>> | 80% | 47,050 psi | 74% | 2723 fps | 99.9% |
| Lovex D073.6 | <<locked>> | 80% | 38,493 psi | 60% | 2602 fps | 99.5% |
| Lovex S060 | <<locked>> | 80% | 40,582 psi | 64% | 2572 fps | 97.7% |
| Lovex S062 | <<locked>> | 80% | 35,288 psi | 55% | 2510 fps | 97.6% |
| Lovex S065 | <<locked>> | 92% | 42,206 psi | 66% | 2651 fps | 95.3% |
| Lovex S070 | <<locked>> | 98% | 48,269 psi | 76% | 2782 fps | 95.7% |
| Norma 201 | <<locked>> | 80% | 38,914 psi | 61% | 2575 fps | 98.5% |
| Norma 202 | <<locked>> | 80% | 39,291 psi | 62% | 2592 fps | 99.8% |
| Norma 203B | <<locked>> | 80% | 35,244 psi | 55% | 2539 fps | 96.2% |
| Norma URP | <<locked>> | 92% | 37,507 psi | 59% | 2635 fps | 95.4% |
| Ramshot Big Game | <<locked>> | 80% | 34,664 psi | 54% | 2549 fps | 95.7% |
| Ramshot Hunter | <<locked>> | 98% | 45,194 psi | 71% | 2792 fps | 95.7% |
| Ramshot TAC | <<locked>> | 80% | 42,003 psi | 66% | 2638 fps | 95.5% |
| Ramshot Wild Boar | <<locked>> | 80% | 41,118 psi | 64% | 2654 fps | 97.8% |
| Ramshot X-Terminator | <<locked>> | 80% | 45,600 psi | 71% | 2687 fps | 98.6% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,063 psi | 41% | 1591 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 47,384 psi | 74% | 2730 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 88% | 44,773 psi | 70% | 2700 fps | 95.2% |
| ReloadSwiss RS 52 | 48 gr | 80% | 37,159 psi | 58% | 2648 fps | 96.2% |
| ReloadSwiss RS 60 | 48.7 gr | 80% | 30,429 psi | 48% | 2500 fps | 97.1% |
| ReloadSwiss RS 62 | <<locked>> | 94% | 39,668 psi | 62% | 2710 fps | 95.9% |
| ReloadSwiss RS 70 | <<locked>> | 94% | 40,408 psi | 63% | 2720 fps | 95% |
| Rottweil R 901 | <<locked>> | 80% | 42,612 psi | 67% | 2628 fps | 99.9% |
| Rottweil R 902 | <<locked>> | 80% | 37,101 psi | 58% | 2530 fps | 98% |
| Rottweil R 903 | <<locked>> | 80% | 30,487 psi | 48% | 2428 fps | 95.2% |
| Rottweil R 907 | <<locked>> | 96% | 49,850 psi | 78% | 2779 fps | 95.1% |
| Shooters World Long Rifle | <<locked>> | 92% | 42,206 psi | 66% | 2651 fps | 95.3% |
| Shooters World Match Rifle | <<locked>> | 80% | 38,493 psi | 60% | 2602 fps | 99.5% |
| Shooters World Precision | <<locked>> | 80% | 35,288 psi | 55% | 2510 fps | 97.6% |
| Shooters World SW4350 | <<locked>> | 98% | 48,269 psi | 76% | 2782 fps | 95.7% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 50,067 psi | 78% | 2746 fps | 99.7% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 52,939 psi | 83% | 2825 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 33,982 psi | 53% | 2536 fps | 95.6% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 50,038 psi | 78% | 2733 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 39,842 psi | 62% | 2602 fps | 95.5% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 38,638 psi | 61% | 2592 fps | 97.2% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 40,683 psi | 64% | 2546 fps | 99.9% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 33,460 psi | 52% | 2408 fps | 99.6% |
| SNPE Vectan Tubal 7000 | <<locked>> | 96% | 47,935 psi | 75% | 2707 fps | 95.3% |
| Somchem S321 | <<locked>> | 80% | 45,281 psi | 71% | 2720 fps | 99.6% |
| Somchem S335 | <<locked>> | 80% | 40,118 psi | 63% | 2546 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 39,769 psi | 62% | 2608 fps | 97.4% |
| Somchem S355 | <<locked>> | 80% | 31,444 psi | 49% | 2438 fps | 95.4% |
| Somchem S365 | <<locked>> | 88% | 29,298 psi | 46% | 2467 fps | 95.8% |
| Vihtavuori N130 | <<locked>> | 80% | 46,166 psi | 72% | 2618 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 40,930 psi | 64% | 2546 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 36,187 psi | 57% | 2523 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 37,260 psi | 58% | 2530 fps | 99.8% |
| Vihtavuori N150 | <<locked>> | 80% | 29,994 psi | 47% | 2382 fps | 96.4% |
| Vihtavuori N160 | <<locked>> | 90% | 37,086 psi | 58% | 2589 fps | 95.1% |
| Vihtavuori N530 | <<locked>> | 80% | 42,119 psi | 66% | 2635 fps | 99% |
| Vihtavuori N540 | <<locked>> | 80% | 35,752 psi | 56% | 2516 fps | 99.3% |
| Vihtavuori N550 | <<locked>> | 92% | 38,769 psi | 61% | 2641 fps | 95.5% |
| Vihtavuori N555 | <<locked>> | 98% | 33,939 psi | 53% | 2608 fps | 95% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 32,721 psi | 51% | 2457 fps | 95.7% |
| Winchester 748 | <<locked>> | 80% | 41,176 psi | 65% | 2674 fps | 99.4% |
| Winchester 760 | <<locked>> | 96% | 46,427 psi | 73% | 2812 fps | 95.1% |
| Winchester StaBALL Match | <<locked>> | 80% | 37,811 psi | 59% | 2592 fps | 97.6% |
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 .306 | 160gr | Peregrine Plainsmaster (VLR-4). ReloadSwiss RS 60 delivers the highest muzzle velocity at 3,035 fps; across all powders the maximum-charge window runs from 1,739 fps to 3,035 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 55–90 %, leaving at least 10 % headroom. The 160.0 gr projectile in 0.306" 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 60, ReloadSwiss RS 52 rank at the top here: for .300 RCM with the .306 | 160gr | Peregrine Plainsmaster (VLR-4) 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.