Load Specifications
Bullet:.308 | 168gr | Norma Diamond
Bullet Manufacturer:Norma
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:1:13.5
Load data in caliber .300 RCM with .308 | 168gr | Norma Diamond bullet and 100 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.
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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% | 54,969 psi | 86% | 2726 fps | 100% |
| Accurate 2460 | <<locked>> | 82% | 56,869 psi | 89% | 2802 fps | 100% |
| Accurate 2495 | <<locked>> | 90% | 57,145 psi | 90% | 2795 fps | 100% |
| Accurate 2520 | <<locked>> | 84% | 55,259 psi | 87% | 2815 fps | 100% |
| Accurate 2700 | <<locked>> | 90% | 56,391 psi | 88% | 2799 fps | 97.2% |
| Accurate 4064 | <<locked>> | 92% | 57,043 psi | 89% | 2844 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 57,000 psi | 89% | 2930 fps | 99.7% |
| ADI AR 2206H | <<locked>> | 88% | 57,609 psi | 90% | 2881 fps | 100% |
| ADI AR 2208 | <<locked>> | 92% | 55,129 psi | 86% | 2828 fps | 99.8% |
| ADI Benchmark 8208 | <<locked>> | 86% | 56,652 psi | 89% | 2831 fps | 100% |
| Alliant AR-Comp | <<locked>> | 86% | 57,348 psi | 90% | 2799 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 90% | 57,377 psi | 90% | 3002 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 92% | 55,013 psi | 86% | 2848 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 90% | 55,637 psi | 87% | 2871 fps | 99.9% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 54,447 psi | 85% | 2933 fps | 99.8% |
| Alliant Reloder-17 | <<locked>> | 96% | 55,695 psi | 87% | 2969 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 39,015 psi | 61% | 2667 fps | 98.6% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 43,482 psi | 68% | 2825 fps | 97.9% |
| Baschieri & Pellagri 107 | <<locked>> | 88% | 57,566 psi | 90% | 2897 fps | 99.8% |
| Bofors RP3 | <<locked>> | 92% | 55,535 psi | 87% | 2864 fps | 100% |
| Bofors RP7 | <<locked>> | 96% | 55,811 psi | 87% | 2835 fps | 97.4% |
| Hodgdon Benchmark | <<locked>> | 84% | 54,694 psi | 86% | 2759 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 86% | 56,028 psi | 88% | 2861 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 82% | 54,099 psi | 85% | 2904 fps | 99.8% |
| Hodgdon H322 | <<locked>> | 82% | 57,290 psi | 90% | 2822 fps | 100% |
| Hodgdon H380 | <<locked>> | 92% | 56,550 psi | 89% | 2877 fps | 99.5% |
| Hodgdon H414 | <<locked>> | 98% | 55,985 psi | 88% | 2923 fps | 98.1% |
| Hodgdon H4350 | <<locked>> | 96% | 56,826 psi | 89% | 2890 fps | 96.9% |
| Hodgdon H4895 | <<locked>> | 86% | 54,723 psi | 86% | 2841 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 50,662 psi | 79% | 2808 fps | 99.9% |
| Hodgdon LEVERevolution | <<locked>> | 90% | 57,464 psi | 90% | 2920 fps | 100% |
| Hodgdon Superformance | <<locked>> | 98% | 57,072 psi | 89% | 2966 fps | 97.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,505 psi | 56% | 1726 fps | 100% |
| Hodgdon VARGET | <<locked>> | 88% | 55,825 psi | 87% | 2838 fps | 100% |
| IMR 3031 | <<locked>> | 86% | 54,607 psi | 86% | 2822 fps | 100% |
| IMR 4064 | <<locked>> | 90% | 54,607 psi | 86% | 2812 fps | 99.8% |
| IMR 4166 Enduron | <<locked>> | 88% | 54,592 psi | 86% | 2789 fps | 97.7% |
| IMR 4198 | <<locked>> | 82% | 57,638 psi | 90% | 2730 fps | 100% |
| IMR 4350ᴾ | <<locked>> | 100% | 55,970 psi | 88% | 2858 fps | 97.4% |
| IMR 4451 Enduron | <<locked>> | 94% | 54,360 psi | 85% | 2815 fps | 97.5% |
| IMR 4831ᴾ | <<locked>> | 100% | 53,693 psi | 84% | 2867 fps | 99.5% |
| IMR 4895 | <<locked>> | 90% | 57,058 psi | 89% | 2900 fps | 100% |
| IMR 8208 XBR | <<locked>> | 86% | 56,652 psi | 89% | 2831 fps | 100% |
| Lovex D073.5 | <<locked>> | 82% | 56,971 psi | 89% | 2815 fps | 100% |
| Lovex D073.6 | <<locked>> | 88% | 57,363 psi | 90% | 2851 fps | 100% |
| Lovex S060 | <<locked>> | 88% | 56,927 psi | 89% | 2805 fps | 100% |
| Lovex S062 | <<locked>> | 90% | 54,375 psi | 85% | 2808 fps | 100% |
| Lovex S065 | <<locked>> | 98% | 57,014 psi | 89% | 2858 fps | 99% |
| Lovex S070 | <<locked>> | 98% | 54,317 psi | 85% | 2838 fps | 97.9% |
| Norma 201 | <<locked>> | 88% | 56,217 psi | 88% | 2825 fps | 100% |
| Norma 202 | <<locked>> | 88% | 56,797 psi | 89% | 2822 fps | 100% |
| Norma 203B | <<locked>> | 90% | 54,795 psi | 86% | 2858 fps | 100% |
| Norma 204ᴾ | <<locked>> | 100% | 56,739 psi | 89% | 2907 fps | 96.3% |
| Norma URPᴾ | <<locked>> | 100% | 55,680 psi | 87% | 2913 fps | 99.6% |
| Ramshot Big Game | <<locked>> | 90% | 55,448 psi | 87% | 2884 fps | 99.9% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 54,621 psi | 86% | 2913 fps | 98.6% |
| Ramshot TAC | <<locked>> | 86% | 56,942 psi | 89% | 2851 fps | 99.1% |
| Ramshot Wild Boar | <<locked>> | 86% | 56,623 psi | 89% | 2867 fps | 100% |
| Ramshot X-Terminator | <<locked>> | 84% | 57,479 psi | 90% | 2831 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,984 psi | 56% | 1768 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 82% | 55,956 psi | 88% | 2808 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 92% | 57,043 psi | 89% | 2861 fps | 98.6% |
| ReloadSwiss RS 52 | <<locked>> | 88% | 56,014 psi | 88% | 2936 fps | 99.9% |
| ReloadSwiss RS 60 | <<locked>> | 94% | 55,390 psi | 87% | 2969 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 56,492 psi | 89% | 2953 fps | 99.6% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 56,376 psi | 88% | 2982 fps | 99.5% |
| Rottweil R 901 | <<locked>> | 86% | 57,101 psi | 89% | 2802 fps | 100% |
| Rottweil R 902 | <<locked>> | 90% | 56,666 psi | 89% | 2818 fps | 100% |
| Rottweil R 903 | <<locked>> | 94% | 55,390 psi | 87% | 2854 fps | 100% |
| Rottweil R 907 | <<locked>> | 96% | 55,811 psi | 87% | 2835 fps | 97.4% |
| Shooters World Long Rifle | <<locked>> | 98% | 57,014 psi | 89% | 2858 fps | 99% |
| Shooters World Match Rifle | <<locked>> | 88% | 57,363 psi | 90% | 2851 fps | 100% |
| Shooters World Precision | <<locked>> | 90% | 54,375 psi | 85% | 2808 fps | 100% |
| Shooters World SW4350 | <<locked>> | 98% | 54,317 psi | 85% | 2838 fps | 97.9% |
| SNPE Vectan SP 11 | <<locked>> | 94% | 57,217 psi | 90% | 2917 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 86% | 55,347 psi | 87% | 2828 fps | 99.3% |
| SNPE Vectan SP 9 | <<locked>> | 88% | 55,825 psi | 87% | 2848 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 86% | 54,375 psi | 85% | 2717 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 92% | 54,665 psi | 86% | 2717 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 98% | 57,435 psi | 90% | 2812 fps | 98.1% |
| Somchem S321 | <<locked>> | 82% | 54,128 psi | 85% | 2812 fps | 100% |
| Somchem S335 | <<locked>> | 88% | 57,072 psi | 89% | 2759 fps | 100% |
| Somchem S341 | <<locked>> | 86% | 54,969 psi | 86% | 2822 fps | 99.9% |
| Somchem S355 | <<locked>> | 94% | 55,811 psi | 87% | 2854 fps | 100% |
| Somchem S365ᴾ | <<locked>> | 100% | 50,198 psi | 79% | 2867 fps | 100% |
| Vihtavuori N130 | <<locked>> | 84% | 57,377 psi | 90% | 2720 fps | 100% |
| Vihtavuori N133 | <<locked>> | 86% | 54,607 psi | 86% | 2700 fps | 100% |
| Vihtavuori N135 | <<locked>> | 90% | 56,434 psi | 88% | 2782 fps | 100% |
| Vihtavuori N140 | <<locked>> | 90% | 57,348 psi | 90% | 2802 fps | 100% |
| Vihtavuori N150 | <<locked>> | 96% | 57,246 psi | 90% | 2831 fps | 100% |
| Vihtavuori N160 | <<locked>> | 98% | 54,868 psi | 86% | 2861 fps | 99.5% |
| Vihtavuori N530 | <<locked>> | 86% | 57,014 psi | 89% | 2828 fps | 100% |
| Vihtavuori N540 | <<locked>> | 90% | 55,448 psi | 87% | 2799 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 57,348 psi | 90% | 2917 fps | 99.6% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 42,554 psi | 67% | 2743 fps | 98.5% |
| Winchester 6.5 StaBALL | <<locked>> | 98% | 55,100 psi | 86% | 2838 fps | 100% |
| Winchester 748 | <<locked>> | 86% | 57,014 psi | 89% | 2877 fps | 100% |
| Winchester 760 | <<locked>> | 98% | 56,304 psi | 88% | 2930 fps | 98.1% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 34,853 psi | 55% | 2664 fps | 98.4% |
| Winchester StaBALL Match | <<locked>> | 88% | 55,825 psi | 87% | 2858 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% | 48,689 psi | 76% | 2638 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 53,171 psi | 83% | 2749 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 41,278 psi | 65% | 2562 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 48,196 psi | 76% | 2713 fps | 100% |
| Accurate 2700 | <<locked>> | 84% | 46,427 psi | 73% | 2638 fps | 95% |
| Accurate 4064 | <<locked>> | 80% | 39,015 psi | 61% | 2556 fps | 100% |
| Accurate 4350 | <<locked>> | 86% | 35,186 psi | 55% | 2539 fps | 95.8% |
| ADI AR 2206H | <<locked>> | 80% | 44,802 psi | 70% | 2671 fps | 99.2% |
| ADI AR 2208 | <<locked>> | 80% | 38,174 psi | 60% | 2523 fps | 97.3% |
| ADI Benchmark 8208 | <<locked>> | 80% | 46,833 psi | 73% | 2677 fps | 99.9% |
| Alliant AR-Comp | <<locked>> | 80% | 47,195 psi | 74% | 2664 fps | 100% |
| Alliant Power Pro 2000-MR | 52.1 gr | 80% | 40,741 psi | 64% | 2700 fps | 97.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 37,739 psi | 59% | 2543 fps | 98.6% |
| Alliant Reloder-15 | <<locked>> | 80% | 40,538 psi | 64% | 2605 fps | 98% |
| Alliant Reloder-16 | <<locked>> | 86% | 35,389 psi | 55% | 2552 fps | 95.9% |
| Alliant Reloder-17 | 51.3 gr | 80% | 32,561 psi | 51% | 2507 fps | 96.6% |
| Alliant Reloder-23 | <<locked>> | 92% | 30,516 psi | 48% | 2451 fps | 95.5% |
| Alliant Reloder-26 | <<locked>> | 96% | 37,855 psi | 59% | 2697 fps | 96% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 43,932 psi | 69% | 2674 fps | 98.3% |
| Bofors RP3 | <<locked>> | 80% | 37,333 psi | 59% | 2546 fps | 98.6% |
| Bofors RP7 | <<locked>> | 90% | 46,296 psi | 73% | 2677 fps | 95.3% |
| Hodgdon Benchmark | <<locked>> | 80% | 48,472 psi | 76% | 2664 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 45,745 psi | 72% | 2700 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 80% | 50,459 psi | 79% | 2844 fps | 99.6% |
| Hodgdon H322 | <<locked>> | 80% | 53,447 psi | 84% | 2769 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 38,072 psi | 60% | 2546 fps | 96.1% |
| Hodgdon H414 | <<locked>> | 90% | 42,989 psi | 67% | 2700 fps | 95.2% |
| Hodgdon H4350 | <<locked>> | 92% | 49,966 psi | 78% | 2779 fps | 95.4% |
| Hodgdon H4895 | <<locked>> | 80% | 45,223 psi | 71% | 2684 fps | 99.5% |
| Hodgdon Hybrid 100V | <<locked>> | 84% | 30,530 psi | 48% | 2398 fps | 95.9% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 41,249 psi | 65% | 2654 fps | 99.3% |
| Hodgdon Superformance | <<locked>> | 92% | 45,977 psi | 72% | 2776 fps | 95.3% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,484 psi | 42% | 1542 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 43,279 psi | 68% | 2631 fps | 99.2% |
| IMR 3031 | <<locked>> | 80% | 44,802 psi | 70% | 2674 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 40,074 psi | 63% | 2556 fps | 98% |
| IMR 4166 Enduron | <<locked>> | 82% | 45,237 psi | 71% | 2628 fps | 95.7% |
| IMR 4198 | <<locked>> | 80% | 54,346 psi | 85% | 2684 fps | 100% |
| IMR 4350 | <<locked>> | 94% | 46,340 psi | 73% | 2700 fps | 95.4% |
| IMR 4451 Enduron | <<locked>> | 88% | 45,092 psi | 71% | 2654 fps | 95.5% |
| IMR 4831 | <<locked>> | 86% | 33,982 psi | 53% | 2497 fps | 95.4% |
| IMR 4895 | <<locked>> | 80% | 41,510 psi | 65% | 2638 fps | 98.7% |
| IMR 8208 XBR | <<locked>> | 80% | 46,833 psi | 73% | 2677 fps | 99.9% |
| Lovex D073.5 | <<locked>> | 80% | 52,953 psi | 83% | 2759 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 44,005 psi | 69% | 2651 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 44,860 psi | 70% | 2608 fps | 99.2% |
| Lovex S062 | <<locked>> | 80% | 40,001 psi | 63% | 2562 fps | 99.3% |
| Lovex S065 | <<locked>> | 86% | 39,436 psi | 62% | 2549 fps | 95.6% |
| Lovex S070 | <<locked>> | 90% | 42,409 psi | 66% | 2631 fps | 95.2% |
| Norma 201 | <<locked>> | 80% | 43,830 psi | 69% | 2621 fps | 99.7% |
| Norma 202 | <<locked>> | 80% | 44,164 psi | 69% | 2631 fps | 100% |
| Norma 203B | <<locked>> | 80% | 39,900 psi | 63% | 2595 fps | 98.4% |
| Norma 204 | <<locked>> | 98% | 52,881 psi | 83% | 2848 fps | 95.5% |
| Norma URP | <<locked>> | 86% | 35,476 psi | 56% | 2539 fps | 95.7% |
| Ramshot Big Game | <<locked>> | 80% | 39,450 psi | 62% | 2608 fps | 98.1% |
| Ramshot Hunter | <<locked>> | 90% | 39,450 psi | 62% | 2635 fps | 95% |
| Ramshot TAC | <<locked>> | 80% | 46,702 psi | 73% | 2684 fps | 97.6% |
| Ramshot Wild Boar | <<locked>> | 80% | 46,180 psi | 72% | 2703 fps | 99.3% |
| Ramshot X-Terminator | <<locked>> | 80% | 50,531 psi | 79% | 2726 fps | 99.7% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,789 psi | 42% | 1581 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 52,330 psi | 82% | 2756 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 41,176 psi | 65% | 2585 fps | 95.2% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 42,656 psi | 67% | 2710 fps | 98.4% |
| ReloadSwiss RS 60 | 51.3 gr | 80% | 34,664 psi | 54% | 2575 fps | 99.4% |
| ReloadSwiss RS 62 | <<locked>> | 86% | 34,911 psi | 55% | 2556 fps | 95.2% |
| ReloadSwiss RS 70 | <<locked>> | 88% | 37,507 psi | 59% | 2618 fps | 95.2% |
| Rottweil R 901 | <<locked>> | 80% | 47,776 psi | 75% | 2661 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 41,684 psi | 65% | 2575 fps | 99.4% |
| Rottweil R 903 | <<locked>> | 80% | 35,230 psi | 55% | 2493 fps | 97.8% |
| Rottweil R 907 | <<locked>> | 90% | 46,296 psi | 73% | 2677 fps | 95.3% |
| Shooters World Long Rifle | <<locked>> | 86% | 39,436 psi | 62% | 2549 fps | 95.6% |
| Shooters World Match Rifle | <<locked>> | 80% | 44,005 psi | 69% | 2651 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 40,001 psi | 63% | 2562 fps | 99.3% |
| Shooters World SW4350 | <<locked>> | 90% | 42,409 psi | 66% | 2631 fps | 95.2% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 36,100 psi | 57% | 2539 fps | 97.3% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 44,947 psi | 70% | 2657 fps | 97.8% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 43,294 psi | 68% | 2641 fps | 98.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 45,121 psi | 71% | 2575 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 37,565 psi | 59% | 2444 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 90% | 44,251 psi | 69% | 2602 fps | 95.4% |
| Somchem S321 | <<locked>> | 80% | 50,633 psi | 79% | 2756 fps | 100% |
| Somchem S335 | <<locked>> | 80% | 44,759 psi | 70% | 2579 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 44,759 psi | 70% | 2657 fps | 99.1% |
| Somchem S355 | <<locked>> | 80% | 35,969 psi | 56% | 2497 fps | 97.8% |
| Somchem S365 | <<locked>> | 80% | 26,092 psi | 41% | 2323 fps | 95.1% |
| Vihtavuori N130 | <<locked>> | 80% | 50,908 psi | 80% | 2635 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 45,469 psi | 71% | 2569 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 41,176 psi | 65% | 2556 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 41,945 psi | 66% | 2569 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 34,316 psi | 54% | 2438 fps | 98.6% |
| Vihtavuori N160 | <<locked>> | 84% | 34,635 psi | 54% | 2487 fps | 95.3% |
| Vihtavuori N530 | <<locked>> | 80% | 46,891 psi | 73% | 2674 fps | 99.9% |
| Vihtavuori N540 | <<locked>> | 80% | 40,161 psi | 63% | 2552 fps | 100% |
| Vihtavuori N550 | <<locked>> | 86% | 36,463 psi | 57% | 2543 fps | 95.8% |
| Vihtavuori N555 | <<locked>> | 92% | 32,735 psi | 51% | 2526 fps | 95.6% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 30,342 psi | 48% | 2359 fps | 95.9% |
| Winchester 748 | <<locked>> | 80% | 46,717 psi | 73% | 2723 fps | 100% |
| Winchester 760 | <<locked>> | 90% | 43,207 psi | 68% | 2703 fps | 95.2% |
| Winchester StaBALL HD | <<locked>> | 96% | 30,676 psi | 48% | 2533 fps | 96.2% |
| Winchester StaBALL Match | <<locked>> | 80% | 42,627 psi | 67% | 2641 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 100 powders for .300 RCM loaded with the .308 | 168gr | Norma Diamond. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 3,002 fps; across all powders the maximum-charge window runs from 1,726 fps to 3,002 fps. Accurate 4350 gives the best case fill at 100 %, and 100 of the 100 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 168.0 gr projectile in 0.308" calls for a 1:13.5 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 | 168gr | Norma Diamond 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.