Load Specifications
Bullet Manufacturer:Berger
Bullet Weight:168 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:1:12.5
Load data in caliber .300 RCM with .308 | 168gr | Berger Hybrid Target bullet and 102 powders. The key underlying parameters are shown in the table above.
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% | 57,246 psi | 90% | 2749 fps | 100% |
| Accurate 2460 | <<locked>> | 82% | 55,695 psi | 87% | 2776 fps | 100% |
| Accurate 2495 | <<locked>> | 90% | 55,840 psi | 88% | 2772 fps | 100% |
| Accurate 2520 | <<locked>> | 86% | 57,725 psi | 90% | 2841 fps | 100% |
| Accurate 2700 | <<locked>> | 90% | 55,274 psi | 87% | 2772 fps | 96.8% |
| Accurate 4064 | <<locked>> | 92% | 55,550 psi | 87% | 2818 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 55,303 psi | 87% | 2897 fps | 99.6% |
| ADI AR 2206H | <<locked>> | 88% | 56,188 psi | 88% | 2848 fps | 100% |
| ADI AR 2208 | <<locked>> | 94% | 57,348 psi | 90% | 2851 fps | 99.9% |
| ADI Benchmark 8208 | <<locked>> | 86% | 55,201 psi | 87% | 2802 fps | 100% |
| Alliant AR-Comp | <<locked>> | 86% | 56,217 psi | 88% | 2779 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 82% | 57,087 psi | 89% | 2907 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 90% | 55,840 psi | 88% | 2969 fps | 99.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 94% | 57,174 psi | 90% | 2871 fps | 100% |
| Alliant Reloder-10x | <<locked>> | 82% | 56,826 psi | 89% | 2753 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 90% | 54,244 psi | 85% | 2841 fps | 99.8% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 53,026 psi | 83% | 2897 fps | 99.6% |
| Alliant Reloder-17 | <<locked>> | 96% | 54,302 psi | 85% | 2940 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 37,913 psi | 59% | 2635 fps | 98.2% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 42,221 psi | 66% | 2789 fps | 97.3% |
| Baschieri & Pellagri 107 | <<locked>> | 88% | 56,028 psi | 88% | 2867 fps | 99.7% |
| Bofors RP3 | <<locked>> | 92% | 54,186 psi | 85% | 2835 fps | 100% |
| Bofors RP7 | <<locked>> | 96% | 54,360 psi | 85% | 2802 fps | 96.9% |
| Hodgdon Benchmark | <<locked>> | 86% | 57,246 psi | 90% | 2785 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 86% | 54,679 psi | 86% | 2835 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 84% | 56,724 psi | 89% | 2933 fps | 99.9% |
| Hodgdon H322 | <<locked>> | 82% | 55,956 psi | 88% | 2795 fps | 100% |
| Hodgdon H335 | <<locked>> | 82% | 57,087 psi | 89% | 2822 fps | 100% |
| Hodgdon H380 | <<locked>> | 92% | 55,259 psi | 87% | 2848 fps | 99.3% |
| Hodgdon H414 | <<locked>> | 98% | 54,505 psi | 85% | 2894 fps | 97.7% |
| Hodgdon H4350 | <<locked>> | 96% | 55,419 psi | 87% | 2858 fps | 96.4% |
| Hodgdon H4895 | <<locked>> | 88% | 56,768 psi | 89% | 2861 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 49,211 psi | 77% | 2776 fps | 99.8% |
| Hodgdon LEVERevolution | <<locked>> | 90% | 56,144 psi | 88% | 2894 fps | 100% |
| Hodgdon Superformance | <<locked>> | 98% | 55,651 psi | 87% | 2933 fps | 97.4% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,346 psi | 55% | 1716 fps | 100% |
| Hodgdon VARGET | <<locked>> | 88% | 54,737 psi | 86% | 2815 fps | 100% |
| IMR 3031 | <<locked>> | 88% | 56,869 psi | 89% | 2844 fps | 100% |
| IMR 4064 | <<locked>> | 92% | 56,782 psi | 89% | 2831 fps | 99.9% |
| IMR 4166 Enduron | <<locked>> | 90% | 56,797 psi | 89% | 2812 fps | 97.8% |
| IMR 4198 | <<locked>> | 82% | 56,724 psi | 89% | 2707 fps | 100% |
| IMR 4350ᴾ | <<locked>> | 100% | 54,665 psi | 86% | 2828 fps | 97% |
| IMR 4451 Enduron | <<locked>> | 96% | 56,347 psi | 88% | 2835 fps | 97.7% |
| IMR 4831ᴾ | <<locked>> | 100% | 52,199 psi | 82% | 2835 fps | 99.3% |
| IMR 4895 | <<locked>> | 90% | 55,622 psi | 87% | 2871 fps | 100% |
| IMR 8208 XBR | <<locked>> | 86% | 55,201 psi | 87% | 2802 fps | 100% |
| Lovex D073.5 | <<locked>> | 82% | 55,521 psi | 87% | 2789 fps | 100% |
| Lovex D073.6 | <<locked>> | 88% | 55,956 psi | 88% | 2828 fps | 100% |
| Lovex S060 | <<locked>> | 88% | 55,898 psi | 88% | 2779 fps | 99.9% |
| Lovex S062 | <<locked>> | 92% | 56,434 psi | 88% | 2828 fps | 100% |
| Lovex S065 | <<locked>> | 98% | 55,564 psi | 87% | 2828 fps | 98.8% |
| Lovex S070ᴾ | <<locked>> | 100% | 56,420 psi | 88% | 2861 fps | 98% |
| Norma 201 | <<locked>> | 88% | 55,027 psi | 86% | 2795 fps | 100% |
| Norma 202 | <<locked>> | 88% | 55,593 psi | 87% | 2799 fps | 100% |
| Norma 203B | <<locked>> | 92% | 56,942 psi | 89% | 2881 fps | 100% |
| Norma URPᴾ | <<locked>> | 100% | 54,128 psi | 85% | 2884 fps | 99.4% |
| Ramshot Big Game | <<locked>> | 90% | 53,867 psi | 84% | 2854 fps | 99.9% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 53,069 psi | 83% | 2881 fps | 98.2% |
| Ramshot TAC | <<locked>> | 86% | 55,811 psi | 87% | 2825 fps | 98.9% |
| Ramshot Wild Boar | <<locked>> | 86% | 55,056 psi | 86% | 2838 fps | 99.9% |
| Ramshot X-Terminator | <<locked>> | 84% | 56,231 psi | 88% | 2805 fps | 99.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,824 psi | 56% | 1755 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 82% | 54,752 psi | 86% | 2782 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 92% | 55,593 psi | 87% | 2828 fps | 98.2% |
| ReloadSwiss RS 52 | <<locked>> | 88% | 54,534 psi | 85% | 2904 fps | 99.8% |
| ReloadSwiss RS 60 | <<locked>> | 94% | 54,215 psi | 85% | 2943 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 54,694 psi | 86% | 2917 fps | 99.4% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 54,853 psi | 86% | 2949 fps | 99.2% |
| Rottweil R 901 | <<locked>> | 86% | 56,144 psi | 88% | 2779 fps | 100% |
| Rottweil R 902 | <<locked>> | 90% | 55,506 psi | 87% | 2795 fps | 100% |
| Rottweil R 903 | <<locked>> | 96% | 57,740 psi | 90% | 2877 fps | 100% |
| Rottweil R 907 | <<locked>> | 96% | 54,360 psi | 85% | 2802 fps | 96.9% |
| Shooters World Long Rifle | <<locked>> | 98% | 55,564 psi | 87% | 2828 fps | 98.8% |
| Shooters World Match Rifle | <<locked>> | 88% | 55,956 psi | 88% | 2828 fps | 100% |
| Shooters World Precision | <<locked>> | 92% | 56,434 psi | 88% | 2828 fps | 100% |
| Shooters World SW4350ᴾ | <<locked>> | 100% | 56,420 psi | 88% | 2861 fps | 98% |
| SNPE Vectan SP 11 | <<locked>> | 94% | 55,724 psi | 87% | 2887 fps | 99.9% |
| SNPE Vectan SP 7 | <<locked>> | 86% | 54,099 psi | 85% | 2802 fps | 99.1% |
| SNPE Vectan SP 9 | <<locked>> | 88% | 54,563 psi | 86% | 2822 fps | 99.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 88% | 56,768 psi | 89% | 2736 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 94% | 56,855 psi | 89% | 2733 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 98% | 56,086 psi | 88% | 2782 fps | 97.7% |
| Somchem S321 | <<locked>> | 84% | 56,753 psi | 89% | 2838 fps | 100% |
| Somchem S335 | <<locked>> | 88% | 55,970 psi | 88% | 2733 fps | 100% |
| Somchem S341 | <<locked>> | 88% | 57,261 psi | 90% | 2844 fps | 100% |
| Somchem S355 | <<locked>> | 94% | 54,505 psi | 85% | 2825 fps | 100% |
| Somchem S365ᴾ | <<locked>> | 100% | 48,747 psi | 76% | 2838 fps | 100% |
| Vihtavuori N130 | <<locked>> | 84% | 56,347 psi | 88% | 2700 fps | 100% |
| Vihtavuori N133 | <<locked>> | 88% | 56,913 psi | 89% | 2720 fps | 100% |
| Vihtavuori N135 | <<locked>> | 90% | 55,071 psi | 86% | 2759 fps | 100% |
| Vihtavuori N140 | <<locked>> | 90% | 55,956 psi | 88% | 2776 fps | 100% |
| Vihtavuori N150 | <<locked>> | 96% | 55,985 psi | 88% | 2805 fps | 100% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 57,058 psi | 89% | 2884 fps | 99.6% |
| Vihtavuori N530 | <<locked>> | 86% | 55,854 psi | 88% | 2802 fps | 100% |
| Vihtavuori N540 | <<locked>> | 92% | 57,711 psi | 90% | 2822 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 55,985 psi | 88% | 2887 fps | 99.4% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 41,104 psi | 64% | 2710 fps | 98.1% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 57,537 psi | 90% | 2861 fps | 100% |
| Winchester 748 | <<locked>> | 86% | 55,579 psi | 87% | 2848 fps | 100% |
| Winchester 760 | <<locked>> | 98% | 54,824 psi | 86% | 2897 fps | 97.7% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 33,823 psi | 53% | 2621 fps | 97.7% |
| Winchester StaBALL Match | <<locked>> | 88% | 54,563 psi | 86% | 2831 fps | 100% |
Start Load - Barrel Length: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2015 | <<locked>> | 80% | 47,645 psi | 75% | 2615 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 51,953 psi | 81% | 2726 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 40,248 psi | 63% | 2539 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 47,007 psi | 74% | 2687 fps | 100% |
| Accurate 2700 | <<locked>> | 86% | 48,501 psi | 76% | 2664 fps | 95.3% |
| Accurate 4064 | <<locked>> | 80% | 38,014 psi | 60% | 2533 fps | 100% |
| Accurate 4350 | <<locked>> | 86% | 33,968 psi | 53% | 2507 fps | 95.2% |
| ADI AR 2206H | <<locked>> | 80% | 43,903 psi | 69% | 2644 fps | 98.9% |
| ADI AR 2208 | <<locked>> | 80% | 37,362 psi | 59% | 2497 fps | 96.9% |
| ADI Benchmark 8208 | <<locked>> | 80% | 45,963 psi | 72% | 2654 fps | 99.8% |
| Alliant AR-Comp | <<locked>> | 80% | 46,006 psi | 72% | 2641 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 53,809 psi | 84% | 2858 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 39,798 psi | 62% | 2667 fps | 97.4% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 36,854 psi | 58% | 2516 fps | 98.3% |
| Alliant Reloder-10x | <<locked>> | 80% | 53,563 psi | 84% | 2710 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 39,668 psi | 62% | 2579 fps | 97.7% |
| Alliant Reloder-16 | <<locked>> | 86% | 34,519 psi | 54% | 2520 fps | 95.3% |
| Alliant Reloder-17 | <<locked>> | 80% | 31,792 psi | 50% | 2480 fps | 96.1% |
| Alliant Reloder-23 | <<locked>> | 94% | 31,575 psi | 49% | 2474 fps | 95.8% |
| Alliant Reloder-26 | <<locked>> | 96% | 36,680 psi | 57% | 2657 fps | 95.2% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 42,960 psi | 67% | 2648 fps | 97.9% |
| Bofors RP3 | <<locked>> | 80% | 36,448 psi | 57% | 2520 fps | 98.3% |
| Bofors RP7 | <<locked>> | 92% | 48,167 psi | 75% | 2700 fps | 95.6% |
| Hodgdon Benchmark | <<locked>> | 80% | 47,543 psi | 75% | 2641 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 44,686 psi | 70% | 2674 fps | 99.9% |
| Hodgdon CFE223 | <<locked>> | 80% | 49,284 psi | 77% | 2815 fps | 99.4% |
| Hodgdon H322 | <<locked>> | 80% | 52,446 psi | 82% | 2746 fps | 100% |
| Hodgdon H335 | <<locked>> | 80% | 53,316 psi | 84% | 2772 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 37,275 psi | 58% | 2520 fps | 95.6% |
| Hodgdon H414 | <<locked>> | 92% | 44,657 psi | 70% | 2723 fps | 95.5% |
| Hodgdon H4350 | <<locked>> | 94% | 52,054 psi | 82% | 2802 fps | 95.7% |
| Hodgdon H4895 | <<locked>> | 80% | 44,324 psi | 69% | 2657 fps | 99.3% |
| Hodgdon Hybrid 100V | <<locked>> | 84% | 29,689 psi | 47% | 2369 fps | 95.2% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 40,161 psi | 63% | 2625 fps | 99% |
| Hodgdon Superformance | <<locked>> | 94% | 48,095 psi | 75% | 2805 fps | 95.7% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,353 psi | 41% | 1532 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 42,409 psi | 66% | 2608 fps | 99% |
| IMR 3031 | <<locked>> | 80% | 43,671 psi | 68% | 2648 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 39,218 psi | 61% | 2530 fps | 97.6% |
| IMR 4166 Enduron | <<locked>> | 82% | 44,251 psi | 69% | 2598 fps | 95.2% |
| IMR 4198 | <<locked>> | 80% | 53,432 psi | 84% | 2664 fps | 100% |
| IMR 4350 | <<locked>> | 96% | 48,182 psi | 76% | 2723 fps | 95.6% |
| IMR 4451 Enduron | <<locked>> | 88% | 44,237 psi | 69% | 2628 fps | 95.1% |
| IMR 4831 | <<locked>> | 88% | 35,346 psi | 55% | 2520 fps | 95.8% |
| IMR 4895 | <<locked>> | 80% | 40,582 psi | 64% | 2612 fps | 98.4% |
| IMR 8208 XBR | <<locked>> | 80% | 45,963 psi | 72% | 2654 fps | 99.8% |
| Lovex D073.5 | <<locked>> | 80% | 51,822 psi | 81% | 2736 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 42,844 psi | 67% | 2625 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 44,005 psi | 69% | 2582 fps | 99% |
| Lovex S062 | <<locked>> | 80% | 39,117 psi | 61% | 2536 fps | 99% |
| Lovex S065 | <<locked>> | 86% | 38,551 psi | 60% | 2523 fps | 95.1% |
| Lovex S070 | <<locked>> | 92% | 44,005 psi | 69% | 2651 fps | 95.5% |
| Norma 201 | <<locked>> | 80% | 42,931 psi | 67% | 2598 fps | 99.5% |
| Norma 202 | <<locked>> | 80% | 43,236 psi | 68% | 2608 fps | 100% |
| Norma 203B | <<locked>> | 80% | 39,044 psi | 61% | 2569 fps | 98% |
| Norma URP | <<locked>> | 86% | 34,519 psi | 54% | 2510 fps | 95.1% |
| Ramshot Big Game | <<locked>> | 80% | 38,450 psi | 60% | 2579 fps | 97.7% |
| Ramshot Hunter | <<locked>> | 92% | 40,959 psi | 64% | 2657 fps | 95.3% |
| Ramshot TAC | <<locked>> | 80% | 45,803 psi | 72% | 2657 fps | 97.3% |
| Ramshot Wild Boar | <<locked>> | 80% | 45,165 psi | 71% | 2674 fps | 99.1% |
| Ramshot X-Terminator | <<locked>> | 80% | 49,545 psi | 78% | 2700 fps | 99.5% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,658 psi | 42% | 1568 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 51,416 psi | 81% | 2733 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 84% | 43,076 psi | 68% | 2615 fps | 95.6% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 41,408 psi | 65% | 2677 fps | 98.1% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 33,823 psi | 53% | 2546 fps | 99.1% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 36,172 psi | 57% | 2579 fps | 95.5% |
| ReloadSwiss RS 70 | <<locked>> | 90% | 39,015 psi | 61% | 2644 fps | 95.6% |
| Rottweil R 901 | <<locked>> | 80% | 46,978 psi | 74% | 2641 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 40,814 psi | 64% | 2549 fps | 99.3% |
| Rottweil R 903 | <<locked>> | 80% | 34,185 psi | 54% | 2461 fps | 97.4% |
| Rottweil R 907 | <<locked>> | 92% | 48,167 psi | 75% | 2700 fps | 95.6% |
| Shooters World Long Rifle | <<locked>> | 86% | 38,551 psi | 60% | 2523 fps | 95.1% |
| Shooters World Match Rifle | <<locked>> | 80% | 42,844 psi | 67% | 2625 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 39,117 psi | 61% | 2536 fps | 99% |
| Shooters World SW4350 | <<locked>> | 92% | 44,005 psi | 69% | 2651 fps | 95.5% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 35,143 psi | 55% | 2510 fps | 96.8% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 43,961 psi | 69% | 2628 fps | 97.4% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 42,279 psi | 66% | 2612 fps | 98.6% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 44,411 psi | 70% | 2556 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 36,912 psi | 58% | 2425 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 92% | 46,064 psi | 72% | 2621 fps | 95.7% |
| Somchem S321 | <<locked>> | 80% | 49,588 psi | 78% | 2733 fps | 100% |
| Somchem S335 | <<locked>> | 80% | 43,874 psi | 69% | 2556 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 43,758 psi | 69% | 2628 fps | 98.8% |
| Somchem S355 | <<locked>> | 80% | 35,128 psi | 55% | 2470 fps | 97.4% |
| Somchem S365 | <<locked>> | 82% | 27,166 psi | 43% | 2352 fps | 95.6% |
| Vihtavuori N130 | <<locked>> | 80% | 50,140 psi | 79% | 2615 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 44,730 psi | 70% | 2549 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 40,350 psi | 63% | 2536 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 40,814 psi | 64% | 2543 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 33,330 psi | 52% | 2408 fps | 98.2% |
| Vihtavuori N160 | <<locked>> | 86% | 36,013 psi | 56% | 2513 fps | 95.6% |
| Vihtavuori N530 | <<locked>> | 80% | 45,992 psi | 72% | 2651 fps | 99.8% |
| Vihtavuori N540 | <<locked>> | 80% | 39,407 psi | 62% | 2533 fps | 99.9% |
| Vihtavuori N550 | <<locked>> | 86% | 35,389 psi | 55% | 2513 fps | 95.2% |
| Vihtavuori N555 | <<locked>> | 92% | 31,662 psi | 50% | 2493 fps | 95% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 29,675 psi | 47% | 2333 fps | 95.3% |
| Winchester 748 | <<locked>> | 80% | 45,542 psi | 71% | 2694 fps | 100% |
| Winchester 760 | <<locked>> | 92% | 44,889 psi | 70% | 2730 fps | 95.5% |
| Winchester StaBALL HD | <<locked>> | 96% | 29,863 psi | 47% | 2493 fps | 95.2% |
| Winchester StaBALL Match | <<locked>> | 80% | 41,626 psi | 65% | 2615 fps | 99% |
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 | 168gr | Berger Hybrid Target. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 2,969 fps; across all powders the maximum-charge window runs from 1,716 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 168.0 gr projectile in 0.308" calls for a 1:12.5 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. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.