Load Specifications
Bullet:.308 | 165gr | Swift A-Frame
Bullet Manufacturer:Swift
Bullet Weight:165 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 | 165gr | Swift A-Frame bullet and 101 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>> | 84% | 54,621 psi | 86% | 2749 fps | 100% |
| Accurate 2460 | <<locked>> | 82% | 56,681 psi | 89% | 2825 fps | 100% |
| Accurate 2495 | <<locked>> | 90% | 56,927 psi | 89% | 2822 fps | 100% |
| Accurate 2520 | <<locked>> | 84% | 55,042 psi | 86% | 2838 fps | 100% |
| Accurate 2700 | <<locked>> | 90% | 56,115 psi | 88% | 2822 fps | 97% |
| Accurate 4064 | <<locked>> | 92% | 56,797 psi | 89% | 2867 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 56,507 psi | 89% | 2949 fps | 99.7% |
| ADI AR 2206H | <<locked>> | 88% | 57,072 psi | 89% | 2897 fps | 100% |
| ADI AR 2208 | <<locked>> | 92% | 54,665 psi | 86% | 2844 fps | 99.7% |
| ADI Benchmark 8208 | <<locked>> | 86% | 56,173 psi | 88% | 2851 fps | 100% |
| Alliant AR-Comp | <<locked>> | 86% | 57,159 psi | 90% | 2825 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 90% | 57,072 psi | 89% | 3025 fps | 99.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 92% | 54,752 psi | 86% | 2871 fps | 100% |
| Alliant Reloder-10x | <<locked>> | 82% | 57,653 psi | 90% | 2799 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 90% | 55,376 psi | 87% | 2894 fps | 99.8% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 54,070 psi | 85% | 2953 fps | 99.7% |
| Alliant Reloder-17 | <<locked>> | 96% | 55,550 psi | 87% | 2995 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 38,725 psi | 61% | 2684 fps | 98.4% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 43,265 psi | 68% | 2844 fps | 97.6% |
| Baschieri & Pellagri 107 | <<locked>> | 88% | 57,246 psi | 90% | 2920 fps | 99.7% |
| Bofors RP3 | <<locked>> | 92% | 55,230 psi | 87% | 2884 fps | 100% |
| Bofors RP7 | <<locked>> | 96% | 55,521 psi | 87% | 2854 fps | 97.2% |
| Hodgdon Benchmark | <<locked>> | 84% | 54,607 psi | 86% | 2785 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 86% | 55,695 psi | 87% | 2884 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 82% | 53,838 psi | 84% | 2923 fps | 99.7% |
| Hodgdon H322 | <<locked>> | 82% | 56,884 psi | 89% | 2844 fps | 100% |
| Hodgdon H380 | <<locked>> | 92% | 56,246 psi | 88% | 2897 fps | 99.4% |
| Hodgdon H414 | <<locked>> | 98% | 55,854 psi | 88% | 2949 fps | 97.9% |
| Hodgdon H4350 | <<locked>> | 96% | 56,449 psi | 88% | 2907 fps | 96.7% |
| Hodgdon H4895 | <<locked>> | 88% | 57,696 psi | 90% | 2910 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 50,343 psi | 79% | 2828 fps | 99.9% |
| Hodgdon LEVERevolution | <<locked>> | 90% | 57,130 psi | 90% | 2943 fps | 100% |
| Hodgdon Superformance | <<locked>> | 98% | 56,855 psi | 89% | 2989 fps | 97.7% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,505 psi | 56% | 1745 fps | 100% |
| Hodgdon VARGET | <<locked>> | 88% | 55,608 psi | 87% | 2864 fps | 100% |
| IMR 3031 | <<locked>> | 86% | 54,172 psi | 85% | 2844 fps | 100% |
| IMR 4064 | <<locked>> | 92% | 57,595 psi | 90% | 2881 fps | 99.9% |
| IMR 4166 Enduron | <<locked>> | 90% | 57,740 psi | 90% | 2864 fps | 98% |
| IMR 4198 | <<locked>> | 82% | 57,406 psi | 90% | 2753 fps | 100% |
| IMR 4350ᴾ | <<locked>> | 100% | 55,622 psi | 87% | 2877 fps | 97.2% |
| IMR 4451 Enduron | <<locked>> | 96% | 57,464 psi | 90% | 2887 fps | 97.9% |
| IMR 4831ᴾ | <<locked>> | 100% | 53,272 psi | 83% | 2887 fps | 99.4% |
| IMR 4895 | <<locked>> | 90% | 56,797 psi | 89% | 2923 fps | 100% |
| IMR 8208 XBR | <<locked>> | 86% | 56,173 psi | 88% | 2851 fps | 100% |
| Lovex D073.5 | <<locked>> | 82% | 56,463 psi | 88% | 2835 fps | 100% |
| Lovex D073.6 | <<locked>> | 88% | 57,101 psi | 89% | 2877 fps | 100% |
| Lovex S060 | <<locked>> | 88% | 56,797 psi | 89% | 2828 fps | 100% |
| Lovex S062 | <<locked>> | 92% | 57,551 psi | 90% | 2877 fps | 100% |
| Lovex S065 | <<locked>> | 98% | 56,666 psi | 89% | 2877 fps | 98.9% |
| Lovex S070ᴾ | <<locked>> | 100% | 57,711 psi | 90% | 2917 fps | 98.3% |
| Norma 201 | <<locked>> | 88% | 56,028 psi | 88% | 2848 fps | 100% |
| Norma 202 | <<locked>> | 88% | 56,579 psi | 89% | 2848 fps | 100% |
| Norma 203B | <<locked>> | 90% | 54,578 psi | 86% | 2881 fps | 99.9% |
| Norma 204ᴾ | <<locked>> | 100% | 56,550 psi | 89% | 2930 fps | 96.1% |
| Norma URPᴾ | <<locked>> | 100% | 55,579 psi | 87% | 2940 fps | 99.6% |
| Ramshot Big Game | <<locked>> | 90% | 55,085 psi | 86% | 2904 fps | 99.9% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 54,462 psi | 85% | 2936 fps | 98.4% |
| Ramshot TAC | <<locked>> | 86% | 56,695 psi | 89% | 2874 fps | 99% |
| Ramshot Wild Boar | <<locked>> | 86% | 56,072 psi | 88% | 2887 fps | 100% |
| Ramshot X-Terminator | <<locked>> | 84% | 57,290 psi | 90% | 2854 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,984 psi | 56% | 1788 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 82% | 55,564 psi | 87% | 2828 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 92% | 56,710 psi | 89% | 2881 fps | 98.4% |
| ReloadSwiss RS 52 | <<locked>> | 88% | 55,738 psi | 87% | 2959 fps | 99.8% |
| ReloadSwiss RS 60 | <<locked>> | 94% | 55,332 psi | 87% | 2995 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 56,260 psi | 88% | 2976 fps | 99.5% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 56,115 psi | 88% | 3005 fps | 99.4% |
| Rottweil R 901 | <<locked>> | 86% | 57,000 psi | 89% | 2828 fps | 100% |
| Rottweil R 902 | <<locked>> | 90% | 56,463 psi | 88% | 2844 fps | 100% |
| Rottweil R 903 | <<locked>> | 94% | 55,085 psi | 86% | 2877 fps | 100% |
| Rottweil R 907 | <<locked>> | 96% | 55,521 psi | 87% | 2854 fps | 97.2% |
| Shooters World Long Rifle | <<locked>> | 98% | 56,666 psi | 89% | 2877 fps | 98.9% |
| Shooters World Match Rifle | <<locked>> | 88% | 57,101 psi | 89% | 2877 fps | 100% |
| Shooters World Precision | <<locked>> | 92% | 57,551 psi | 90% | 2877 fps | 100% |
| Shooters World SW4350ᴾ | <<locked>> | 100% | 57,711 psi | 90% | 2917 fps | 98.3% |
| SNPE Vectan SP 11 | <<locked>> | 94% | 56,884 psi | 89% | 2940 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 86% | 55,085 psi | 86% | 2851 fps | 99.2% |
| SNPE Vectan SP 9 | <<locked>> | 88% | 55,593 psi | 87% | 2871 fps | 99.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 88% | 57,566 psi | 90% | 2782 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 94% | 57,711 psi | 90% | 2779 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 98% | 57,072 psi | 89% | 2831 fps | 97.9% |
| Somchem S321 | <<locked>> | 84% | 57,580 psi | 90% | 2884 fps | 100% |
| Somchem S335 | <<locked>> | 88% | 56,927 psi | 89% | 2782 fps | 100% |
| Somchem S341 | <<locked>> | 86% | 54,418 psi | 85% | 2838 fps | 99.9% |
| Somchem S355 | <<locked>> | 94% | 55,550 psi | 87% | 2877 fps | 100% |
| Somchem S365ᴾ | <<locked>> | 100% | 49,777 psi | 78% | 2887 fps | 100% |
| Vihtavuori N130 | <<locked>> | 84% | 57,319 psi | 90% | 2746 fps | 100% |
| Vihtavuori N133 | <<locked>> | 88% | 57,725 psi | 90% | 2766 fps | 100% |
| Vihtavuori N135 | <<locked>> | 90% | 56,217 psi | 88% | 2808 fps | 100% |
| Vihtavuori N140 | <<locked>> | 90% | 57,087 psi | 89% | 2825 fps | 100% |
| Vihtavuori N150 | <<locked>> | 96% | 56,913 psi | 89% | 2851 fps | 100% |
| Vihtavuori N160 | <<locked>> | 98% | 54,520 psi | 85% | 2881 fps | 99.4% |
| Vihtavuori N530 | <<locked>> | 86% | 56,811 psi | 89% | 2851 fps | 100% |
| Vihtavuori N540 | <<locked>> | 90% | 55,201 psi | 87% | 2822 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 57,217 psi | 90% | 2940 fps | 99.6% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 42,221 psi | 66% | 2759 fps | 98.3% |
| Winchester 6.5 StaBALL | <<locked>> | 98% | 54,882 psi | 86% | 2861 fps | 100% |
| Winchester 748 | <<locked>> | 86% | 56,782 psi | 89% | 2900 fps | 100% |
| Winchester 760 | <<locked>> | 98% | 56,115 psi | 88% | 2953 fps | 98% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 34,751 psi | 54% | 2680 fps | 98.1% |
| Winchester StaBALL Match | <<locked>> | 88% | 55,535 psi | 87% | 2881 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% | 48,428 psi | 76% | 2661 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 53,011 psi | 83% | 2776 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 40,959 psi | 64% | 2582 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 48,051 psi | 75% | 2736 fps | 100% |
| Accurate 2700 | <<locked>> | 86% | 49,153 psi | 77% | 2710 fps | 95.5% |
| Accurate 4064 | <<locked>> | 80% | 38,754 psi | 61% | 2575 fps | 100% |
| Accurate 4350 | <<locked>> | 86% | 34,809 psi | 55% | 2552 fps | 95.4% |
| ADI AR 2206H | <<locked>> | 80% | 44,498 psi | 70% | 2690 fps | 99% |
| ADI AR 2208 | <<locked>> | 80% | 37,942 psi | 59% | 2539 fps | 97% |
| ADI Benchmark 8208 | <<locked>> | 80% | 46,557 psi | 73% | 2697 fps | 99.8% |
| Alliant AR-Comp | <<locked>> | 80% | 46,847 psi | 73% | 2684 fps | 100% |
| Alliant Power Pro 2000-MR | 52.5 gr | 80% | 40,408 psi | 63% | 2717 fps | 97.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 37,492 psi | 59% | 2562 fps | 98.4% |
| Alliant Reloder-10x | <<locked>> | 80% | 54,143 psi | 85% | 2753 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 40,219 psi | 63% | 2625 fps | 97.8% |
| Alliant Reloder-16 | <<locked>> | 86% | 35,070 psi | 55% | 2566 fps | 95.5% |
| Alliant Reloder-17 | 51.7 gr | 80% | 32,314 psi | 51% | 2523 fps | 96.3% |
| Alliant Reloder-23 | <<locked>> | 92% | 30,327 psi | 48% | 2467 fps | 95.2% |
| Alliant Reloder-26 | <<locked>> | 96% | 37,507 psi | 59% | 2710 fps | 95.6% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 43,787 psi | 69% | 2694 fps | 98.1% |
| Bofors RP3 | <<locked>> | 80% | 37,014 psi | 58% | 2562 fps | 98.4% |
| Bofors RP7 | <<locked>> | 90% | 46,166 psi | 72% | 2697 fps | 95.1% |
| Hodgdon Benchmark | <<locked>> | 80% | 48,428 psi | 76% | 2690 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 45,382 psi | 71% | 2720 fps | 99.9% |
| Hodgdon CFE223 | <<locked>> | 80% | 50,256 psi | 79% | 2867 fps | 99.5% |
| Hodgdon H322 | <<locked>> | 80% | 53,432 psi | 84% | 2795 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 37,985 psi | 60% | 2569 fps | 95.9% |
| Hodgdon H414 | <<locked>> | 92% | 45,716 psi | 72% | 2779 fps | 95.8% |
| Hodgdon H4350 | <<locked>> | 92% | 49,705 psi | 78% | 2799 fps | 95.2% |
| Hodgdon H4895 | <<locked>> | 80% | 44,889 psi | 70% | 2700 fps | 99.4% |
| Hodgdon Hybrid 100V | <<locked>> | 84% | 30,298 psi | 47% | 2411 fps | 95.5% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 40,857 psi | 64% | 2671 fps | 99.2% |
| Hodgdon Superformance | <<locked>> | 92% | 45,818 psi | 72% | 2795 fps | 95.1% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,368 psi | 41% | 1558 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 43,221 psi | 68% | 2654 fps | 99.1% |
| IMR 3031 | <<locked>> | 80% | 44,701 psi | 70% | 2700 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 39,842 psi | 62% | 2575 fps | 97.8% |
| IMR 4166 Enduron | <<locked>> | 82% | 44,904 psi | 70% | 2644 fps | 95.4% |
| IMR 4198 | <<locked>> | 80% | 54,157 psi | 85% | 2710 fps | 100% |
| IMR 4350 | <<locked>> | 94% | 46,079 psi | 72% | 2717 fps | 95.1% |
| IMR 4451 Enduron | <<locked>> | 88% | 44,976 psi | 70% | 2674 fps | 95.3% |
| IMR 4831 | <<locked>> | 86% | 33,837 psi | 53% | 2513 fps | 95.2% |
| IMR 4895 | <<locked>> | 80% | 41,176 psi | 65% | 2654 fps | 98.5% |
| IMR 8208 XBR | <<locked>> | 80% | 46,557 psi | 73% | 2697 fps | 99.8% |
| Lovex D073.5 | <<locked>> | 80% | 52,823 psi | 83% | 2785 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 43,642 psi | 68% | 2671 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 44,643 psi | 70% | 2628 fps | 99.1% |
| Lovex S062 | <<locked>> | 80% | 39,755 psi | 62% | 2579 fps | 99.1% |
| Lovex S065 | <<locked>> | 86% | 39,363 psi | 62% | 2569 fps | 95.3% |
| Lovex S070 | <<locked>> | 92% | 44,918 psi | 70% | 2700 fps | 95.7% |
| Norma 201 | <<locked>> | 80% | 43,555 psi | 68% | 2641 fps | 99.6% |
| Norma 202 | <<locked>> | 80% | 43,903 psi | 69% | 2651 fps | 100% |
| Norma 203B | <<locked>> | 80% | 39,639 psi | 62% | 2612 fps | 98.2% |
| Norma 204 | <<locked>> | 98% | 52,765 psi | 83% | 2871 fps | 95.3% |
| Norma URP | <<locked>> | 86% | 35,114 psi | 55% | 2552 fps | 95.4% |
| Ramshot Big Game | <<locked>> | 80% | 39,059 psi | 61% | 2621 fps | 97.9% |
| Ramshot Hunter | <<locked>> | 92% | 41,916 psi | 66% | 2710 fps | 95.6% |
| Ramshot TAC | <<locked>> | 80% | 46,543 psi | 73% | 2703 fps | 97.4% |
| Ramshot Wild Boar | <<locked>> | 80% | 46,021 psi | 72% | 2723 fps | 99.2% |
| Ramshot X-Terminator | <<locked>> | 80% | 50,183 psi | 79% | 2746 fps | 99.6% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,658 psi | 42% | 1594 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 52,257 psi | 82% | 2782 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 41,046 psi | 64% | 2605 fps | 95% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 42,250 psi | 66% | 2726 fps | 98.2% |
| ReloadSwiss RS 60 | 51.7 gr | 80% | 34,403 psi | 54% | 2592 fps | 99.2% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 36,999 psi | 58% | 2628 fps | 95.8% |
| ReloadSwiss RS 70 | <<locked>> | 90% | 39,827 psi | 62% | 2697 fps | 95.9% |
| Rottweil R 901 | <<locked>> | 80% | 47,514 psi | 74% | 2684 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 41,466 psi | 65% | 2595 fps | 99.3% |
| Rottweil R 903 | <<locked>> | 80% | 34,983 psi | 55% | 2510 fps | 97.6% |
| Rottweil R 907 | <<locked>> | 90% | 46,166 psi | 72% | 2697 fps | 95.1% |
| Shooters World Long Rifle | <<locked>> | 86% | 39,363 psi | 62% | 2569 fps | 95.3% |
| Shooters World Match Rifle | <<locked>> | 80% | 43,642 psi | 68% | 2671 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 39,755 psi | 62% | 2579 fps | 99.1% |
| Shooters World SW4350 | <<locked>> | 92% | 44,918 psi | 70% | 2700 fps | 95.7% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 35,795 psi | 56% | 2556 fps | 97% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 44,802 psi | 70% | 2677 fps | 97.6% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 42,975 psi | 67% | 2657 fps | 98.8% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 44,904 psi | 70% | 2595 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 37,347 psi | 59% | 2464 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 90% | 44,077 psi | 69% | 2621 fps | 95.2% |
| Somchem S321 | <<locked>> | 80% | 50,502 psi | 79% | 2782 fps | 100% |
| Somchem S335 | <<locked>> | 80% | 44,498 psi | 70% | 2598 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 44,628 psi | 70% | 2677 fps | 99% |
| Somchem S355 | <<locked>> | 80% | 35,694 psi | 56% | 2513 fps | 97.6% |
| Somchem S365 | <<locked>> | 82% | 27,731 psi | 43% | 2398 fps | 95.9% |
| Vihtavuori N130 | <<locked>> | 80% | 50,647 psi | 79% | 2654 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 45,223 psi | 71% | 2589 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 40,944 psi | 64% | 2579 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 41,626 psi | 65% | 2589 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 34,055 psi | 53% | 2454 fps | 98.4% |
| Vihtavuori N160 | <<locked>> | 84% | 34,490 psi | 54% | 2507 fps | 95% |
| Vihtavuori N530 | <<locked>> | 80% | 46,557 psi | 73% | 2694 fps | 99.8% |
| Vihtavuori N540 | <<locked>> | 80% | 40,074 psi | 63% | 2575 fps | 100% |
| Vihtavuori N550 | <<locked>> | 86% | 36,274 psi | 57% | 2562 fps | 95.5% |
| Vihtavuori N555 | <<locked>> | 92% | 32,532 psi | 51% | 2543 fps | 95.3% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 30,255 psi | 47% | 2375 fps | 95.6% |
| Winchester 748 | <<locked>> | 80% | 46,311 psi | 73% | 2740 fps | 100% |
| Winchester 760 | <<locked>> | 90% | 42,975 psi | 67% | 2723 fps | 95% |
| Winchester StaBALL HD | <<locked>> | 96% | 30,458 psi | 48% | 2543 fps | 95.7% |
| Winchester StaBALL Match | <<locked>> | 80% | 42,496 psi | 67% | 2664 fps | 99.1% |
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 101 powders for .300 RCM loaded with the .308 | 165gr | Swift A-Frame. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 3,025 fps; across all powders the maximum-charge window runs from 1,745 fps to 3,025 fps. Accurate 4350 gives the best case fill at 100 %, and 101 of the 101 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 165.0 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 | 165gr | Swift A-Frame 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.