Load Specifications
Load data in caliber .300 RCM with .308 | 132gr | Brenneke TIG nature bullet and 91 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 52 and Hodgdon CFE223.
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>> | 90% | 54,317 psi | 85% | 3068 fps | 100% |
| Accurate 2200 | <<locked>> | 82% | 54,810 psi | 86% | 3166 fps | 98.1% |
| Accurate 2230 | <<locked>> | 82% | 55,840 psi | 88% | 3179 fps | 98.6% |
| Accurate 2460 | <<locked>> | 88% | 56,652 psi | 89% | 3143 fps | 100% |
| Accurate 2495 | <<locked>> | 96% | 54,679 psi | 86% | 3123 fps | 100% |
| Accurate 2520 | <<locked>> | 90% | 54,447 psi | 85% | 3146 fps | 100% |
| Accurate 4064 | <<locked>> | 98% | 54,302 psi | 85% | 3159 fps | 100% |
| Accurate LT-30 | <<locked>> | 84% | 54,578 psi | 86% | 3018 fps | 100% |
| Accurate LT-32 | <<locked>> | 84% | 55,013 psi | 86% | 3041 fps | 100% |
| ADI AR 2206H | <<locked>> | 94% | 57,217 psi | 90% | 3209 fps | 99.1% |
| ADI AR 2207 | <<locked>> | 82% | 55,883 psi | 88% | 3041 fps | 100% |
| ADI AR 2208 | <<locked>> | 98% | 54,795 psi | 86% | 3143 fps | 98.3% |
| ADI AR 2219 | <<locked>> | 84% | 55,100 psi | 86% | 3143 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 92% | 56,391 psi | 88% | 3159 fps | 99.6% |
| Alliant AR-Comp | <<locked>> | 92% | 55,956 psi | 88% | 3150 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 86% | 54,346 psi | 85% | 3222 fps | 99.2% |
| Alliant Power Pro 2000-MR | <<locked>> | 96% | 56,956 psi | 89% | 3320 fps | 98.6% |
| Alliant Reloder- TS 15.5ᴾ | <<locked>> | 100% | 57,072 psi | 89% | 3215 fps | 99.6% |
| Alliant Reloder-10x | <<locked>> | 88% | 57,653 psi | 90% | 3130 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 96% | 54,621 psi | 86% | 3182 fps | 98.4% |
| Alliant Reloder-17ᴾ | <<locked>> | 100% | 50,879 psi | 80% | 3209 fps | 98.8% |
| Alliant Reloder-7 | <<locked>> | 82% | 57,029 psi | 89% | 3064 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 86% | 57,580 psi | 90% | 3061 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 94% | 57,493 psi | 90% | 3222 fps | 98.4% |
| Bofors RP3 | <<locked>> | 98% | 54,056 psi | 85% | 3176 fps | 99.4% |
| Hodgdon Benchmark | <<locked>> | 90% | 55,347 psi | 87% | 3100 fps | 99.8% |
| Hodgdon BL-C2 | <<locked>> | 92% | 55,288 psi | 87% | 3189 fps | 99.8% |
| Hodgdon CFE223 | <<locked>> | 90% | 57,479 psi | 90% | 3294 fps | 98.8% |
| Hodgdon H322 | <<locked>> | 88% | 57,290 psi | 90% | 3173 fps | 100% |
| Hodgdon H335 | <<locked>> | 86% | 54,955 psi | 86% | 3146 fps | 100% |
| Hodgdon H380 | <<locked>> | 98% | 55,782 psi | 87% | 3182 fps | 97.5% |
| Hodgdon H4198 | <<locked>> | 82% | 56,478 psi | 89% | 3071 fps | 100% |
| Hodgdon H4895 | <<locked>> | 94% | 57,711 psi | 90% | 3222 fps | 99.5% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 39,958 psi | 63% | 2907 fps | 96.1% |
| Hodgdon LEVERevolution | <<locked>> | 96% | 56,434 psi | 88% | 3248 fps | 99.6% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,200 psi | 54% | 1929 fps | 100% |
| Hodgdon VARGET | <<locked>> | 94% | 55,811 psi | 87% | 3169 fps | 99.2% |
| IMR 3031 | <<locked>> | 94% | 56,579 psi | 89% | 3212 fps | 100% |
| IMR 4064 | <<locked>> | 96% | 54,186 psi | 85% | 3127 fps | 98.4% |
| IMR 4198 | <<locked>> | 86% | 54,839 psi | 86% | 3045 fps | 100% |
| IMR 4895 | <<locked>> | 96% | 56,028 psi | 88% | 3222 fps | 99.1% |
| IMR 8208 XBR | <<locked>> | 92% | 56,391 psi | 88% | 3159 fps | 99.6% |
| Lovex D073.4 | <<locked>> | 82% | 56,347 psi | 88% | 3156 fps | 100% |
| Lovex D073.5 | <<locked>> | 88% | 56,623 psi | 89% | 3150 fps | 99.9% |
| Lovex D073.6 | <<locked>> | 94% | 56,072 psi | 88% | 3182 fps | 100% |
| Lovex S060 | <<locked>> | 94% | 57,464 psi | 90% | 3133 fps | 99.1% |
| Lovex S062 | <<locked>> | 98% | 56,782 psi | 89% | 3176 fps | 99.7% |
| Norma 200 | <<locked>> | 84% | 57,435 psi | 90% | 3100 fps | 100% |
| Norma 201 | <<locked>> | 94% | 55,521 psi | 87% | 3146 fps | 99.6% |
| Norma 202 | <<locked>> | 94% | 56,014 psi | 88% | 3159 fps | 100% |
| Norma 203B | <<locked>> | 98% | 57,261 psi | 90% | 3228 fps | 99.2% |
| Ramshot Big Game | <<locked>> | 96% | 54,273 psi | 85% | 3192 fps | 98.7% |
| Ramshot TAC | <<locked>> | 92% | 57,624 psi | 90% | 3176 fps | 97.1% |
| Ramshot Wild Boar | <<locked>> | 92% | 56,391 psi | 88% | 3196 fps | 99% |
| Ramshot X-Terminator | <<locked>> | 88% | 54,447 psi | 85% | 3107 fps | 98.6% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 34,389 psi | 54% | 1975 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 88% | 56,202 psi | 88% | 3153 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 98% | 56,637 psi | 89% | 3163 fps | 96% |
| ReloadSwiss RS 52 | <<locked>> | 94% | 54,288 psi | 85% | 3251 fps | 98.4% |
| ReloadSwiss RS 60ᴾ | <<locked>> | 100% | 54,447 psi | 85% | 3287 fps | 100% |
| Rottweil R 901 | <<locked>> | 92% | 56,217 psi | 88% | 3136 fps | 100% |
| Rottweil R 902 | <<locked>> | 96% | 55,927 psi | 88% | 3143 fps | 99.6% |
| Rottweil R 903ᴾ | <<locked>> | 100% | 53,563 psi | 84% | 3159 fps | 99.2% |
| Shooters World AR Plus | <<locked>> | 82% | 56,347 psi | 88% | 3156 fps | 100% |
| Shooters World Match Rifle | <<locked>> | 94% | 56,072 psi | 88% | 3182 fps | 100% |
| Shooters World Precision | <<locked>> | 98% | 56,782 psi | 89% | 3176 fps | 99.7% |
| Shooters World Tactical Rifle | <<locked>> | 86% | 56,478 psi | 89% | 3120 fps | 99.5% |
| SNPE Vectan BA6 1/2 | <<locked>> | 82% | 55,042 psi | 86% | 2766 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 84% | 55,637 psi | 87% | 3153 fps | 100% |
| SNPE Vectan SP 11ᴾ | <<locked>> | 100% | 55,869 psi | 88% | 3228 fps | 98.9% |
| SNPE Vectan SP 3 | <<locked>> | 86% | 55,419 psi | 87% | 3107 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 92% | 55,100 psi | 86% | 3136 fps | 97.2% |
| SNPE Vectan SP 9 | <<locked>> | 94% | 55,492 psi | 87% | 3173 fps | 98.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 92% | 54,679 psi | 86% | 3051 fps | 100% |
| SNPE Vectan Tubal 5000ᴾ | <<locked>> | 100% | 57,696 psi | 90% | 3091 fps | 100% |
| Somchem S321 | <<locked>> | 88% | 54,302 psi | 85% | 3143 fps | 99.6% |
| Somchem S335 | <<locked>> | 94% | 56,811 psi | 89% | 3094 fps | 100% |
| Somchem S341 | <<locked>> | 92% | 54,650 psi | 86% | 3136 fps | 98.7% |
| Somchem S355ᴾ | <<locked>> | 100% | 54,244 psi | 85% | 3159 fps | 99.1% |
| Somchem S365ᴾ | <<locked>> | 100% | 38,899 psi | 61% | 2956 fps | 97.4% |
| Vihtavuori N120 | <<locked>> | 82% | 55,738 psi | 87% | 2986 fps | 100% |
| Vihtavuori N130 | <<locked>> | 88% | 54,215 psi | 85% | 3025 fps | 100% |
| Vihtavuori N133 | <<locked>> | 92% | 54,578 psi | 86% | 3041 fps | 100% |
| Vihtavuori N135 | <<locked>> | 96% | 54,882 psi | 86% | 3117 fps | 100% |
| Vihtavuori N140 | <<locked>> | 96% | 56,840 psi | 89% | 3136 fps | 100% |
| Vihtavuori N150ᴾ | <<locked>> | 100% | 52,649 psi | 83% | 3094 fps | 99.6% |
| Vihtavuori N530 | <<locked>> | 92% | 57,392 psi | 90% | 3166 fps | 99.7% |
| Vihtavuori N540 | <<locked>> | 96% | 54,969 psi | 86% | 3130 fps | 100% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 47,935 psi | 75% | 3022 fps | 98.3% |
| Winchester 748 | <<locked>> | 92% | 56,463 psi | 88% | 3215 fps | 99.9% |
| Winchester StaBALL Match | <<locked>> | 94% | 55,332 psi | 87% | 3182 fps | 99.3% |
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% | 39,334 psi | 62% | 2805 fps | 100% |
| Accurate 2200 | <<locked>> | 80% | 51,068 psi | 80% | 3097 fps | 97.5% |
| Accurate 2230 | <<locked>> | 80% | 51,721 psi | 81% | 3107 fps | 97.9% |
| Accurate 2460 | <<locked>> | 80% | 42,786 psi | 67% | 2907 fps | 99.3% |
| Accurate 2495 | <<locked>> | 80% | 31,488 psi | 49% | 2677 fps | 99.3% |
| Accurate 2520 | <<locked>> | 80% | 38,087 psi | 60% | 2841 fps | 98.3% |
| Accurate 4064 | <<locked>> | 80% | 29,791 psi | 47% | 2648 fps | 96.8% |
| Accurate LT-30 | <<locked>> | 80% | 48,385 psi | 76% | 2917 fps | 100% |
| Accurate LT-32 | <<locked>> | 80% | 48,747 psi | 76% | 2936 fps | 99.7% |
| ADI AR 2206H | <<locked>> | 82% | 38,769 psi | 61% | 2848 fps | 95.3% |
| ADI AR 2207 | <<locked>> | 80% | 52,663 psi | 83% | 2995 fps | 100% |
| ADI AR 2208 | <<locked>> | 90% | 42,583 psi | 67% | 2910 fps | 95.6% |
| ADI AR 2219 | <<locked>> | 80% | 48,051 psi | 75% | 3028 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 80% | 38,392 psi | 60% | 2815 fps | 96.6% |
| Alliant AR-Comp | <<locked>> | 80% | 37,028 psi | 58% | 2835 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 44,280 psi | 69% | 3031 fps | 97.5% |
| Alliant Power Pro 2000-MR | 57.5 gr | 88% | 43,163 psi | 68% | 3045 fps | 95.3% |
| Alliant Reloder- TS 15.5 | <<locked>> | 86% | 36,318 psi | 57% | 2812 fps | 95.6% |
| Alliant Reloder-10x | <<locked>> | 80% | 44,875 psi | 70% | 2927 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 88% | 42,090 psi | 66% | 2943 fps | 95.7% |
| Alliant Reloder-17 | <<locked>> | 92% | 38,754 psi | 61% | 2943 fps | 95.6% |
| Alliant Reloder-7 | <<locked>> | 80% | 53,519 psi | 84% | 3012 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 47,239 psi | 74% | 2904 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 86% | 43,540 psi | 68% | 2969 fps | 95.5% |
| Bofors RP3 | <<locked>> | 86% | 35,476 psi | 56% | 2805 fps | 95.5% |
| Hodgdon Benchmark | <<locked>> | 80% | 40,422 psi | 63% | 2822 fps | 97.8% |
| Hodgdon BL-C2 | <<locked>> | 80% | 36,332 psi | 57% | 2818 fps | 96.7% |
| Hodgdon CFE223 | 53.5 gr | 80% | 40,030 psi | 63% | 2956 fps | 95% |
| Hodgdon H322 | <<locked>> | 80% | 43,772 psi | 69% | 2949 fps | 99.9% |
| Hodgdon H335 | <<locked>> | 80% | 44,469 psi | 70% | 2963 fps | 99.6% |
| Hodgdon H380 | <<locked>> | 92% | 45,556 psi | 71% | 3002 fps | 95.2% |
| Hodgdon H4198 | <<locked>> | 80% | 53,258 psi | 83% | 3022 fps | 100% |
| Hodgdon H4895 | <<locked>> | 80% | 36,579 psi | 57% | 2805 fps | 95.2% |
| Hodgdon Hybrid 100V | <<locked>> | 98% | 37,637 psi | 59% | 2851 fps | 95.3% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 34,853 psi | 55% | 2808 fps | 95% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,135 psi | 39% | 1722 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 37,652 psi | 59% | 2812 fps | 95.5% |
| IMR 3031 | <<locked>> | 80% | 35,172 psi | 55% | 2818 fps | 99.4% |
| IMR 4064 | <<locked>> | 88% | 41,916 psi | 66% | 2894 fps | 95.8% |
| IMR 4198 | <<locked>> | 80% | 45,818 psi | 72% | 2900 fps | 100% |
| IMR 4895 | <<locked>> | 84% | 37,666 psi | 59% | 2858 fps | 95% |
| IMR 8208 XBR | <<locked>> | 80% | 38,392 psi | 60% | 2815 fps | 96.6% |
| Lovex D073.4 | <<locked>> | 80% | 52,489 psi | 82% | 3094 fps | 99.9% |
| Lovex D073.5 | <<locked>> | 80% | 42,598 psi | 67% | 2904 fps | 98.5% |
| Lovex D073.6 | <<locked>> | 80% | 34,389 psi | 54% | 2762 fps | 97.2% |
| Lovex S060 | <<locked>> | 82% | 39,595 psi | 62% | 2799 fps | 95.6% |
| Lovex S062 | <<locked>> | 82% | 33,910 psi | 53% | 2720 fps | 95.2% |
| Norma 200 | <<locked>> | 80% | 50,531 psi | 79% | 2999 fps | 100% |
| Norma 201 | <<locked>> | 80% | 35,375 psi | 55% | 2743 fps | 95.7% |
| Norma 202 | <<locked>> | 80% | 35,563 psi | 56% | 2769 fps | 98.2% |
| Norma 203B | <<locked>> | 86% | 38,769 psi | 61% | 2874 fps | 95.4% |
| Ramshot Big Game | <<locked>> | 88% | 41,191 psi | 65% | 2943 fps | 95.8% |
| Ramshot TAC | <<locked>> | 88% | 50,285 psi | 79% | 3048 fps | 95.6% |
| Ramshot Wild Boar | <<locked>> | 82% | 39,900 psi | 63% | 2881 fps | 95.6% |
| Ramshot X-Terminator | <<locked>> | 80% | 41,785 psi | 65% | 2867 fps | 96% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 25,411 psi | 40% | 1768 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 43,120 psi | 68% | 2920 fps | 98.9% |
| ReloadSwiss RS 50 | <<locked>> | 96% | 53,142 psi | 83% | 3104 fps | 95.2% |
| ReloadSwiss RS 52 | 54.5 gr | 86% | 41,046 psi | 64% | 2992 fps | 95.3% |
| ReloadSwiss RS 60 | <<locked>> | 84% | 31,517 psi | 49% | 2753 fps | 95% |
| Rottweil R 901 | <<locked>> | 80% | 38,841 psi | 61% | 2815 fps | 98.7% |
| Rottweil R 902 | <<locked>> | 80% | 33,605 psi | 53% | 2690 fps | 95% |
| Rottweil R 903 | <<locked>> | 88% | 35,592 psi | 56% | 2799 fps | 95.1% |
| Shooters World AR Plus | <<locked>> | 80% | 52,489 psi | 82% | 3094 fps | 99.9% |
| Shooters World Match Rifle | <<locked>> | 80% | 34,389 psi | 54% | 2762 fps | 97.2% |
| Shooters World Precision | <<locked>> | 82% | 33,910 psi | 53% | 2720 fps | 95.2% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 45,832 psi | 72% | 2940 fps | 98.1% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 52,228 psi | 82% | 2726 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 48,312 psi | 76% | 3031 fps | 99.9% |
| SNPE Vectan SP 11 | <<locked>> | 90% | 39,987 psi | 63% | 2923 fps | 95.5% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 45,687 psi | 72% | 2946 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 88% | 47,877 psi | 75% | 3012 fps | 95.7% |
| SNPE Vectan SP 9 | <<locked>> | 84% | 39,943 psi | 63% | 2871 fps | 95.7% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 37,246 psi | 58% | 2730 fps | 98.5% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 30,385 psi | 48% | 2572 fps | 97.7% |
| Somchem S321 | <<locked>> | 80% | 41,060 psi | 64% | 2897 fps | 97.7% |
| Somchem S335 | <<locked>> | 80% | 36,666 psi | 57% | 2730 fps | 99% |
| Somchem S341 | <<locked>> | 82% | 38,450 psi | 60% | 2825 fps | 95.1% |
| Somchem S355 | <<locked>> | 88% | 36,811 psi | 58% | 2812 fps | 95.3% |
| Somchem S365 | <<locked>> | 96% | 34,171 psi | 54% | 2831 fps | 95.6% |
| Vihtavuori N120 | <<locked>> | 80% | 52,547 psi | 82% | 2943 fps | 100% |
| Vihtavuori N130 | <<locked>> | 80% | 42,409 psi | 66% | 2828 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 37,347 psi | 59% | 2736 fps | 99.9% |
| Vihtavuori N135 | <<locked>> | 80% | 32,387 psi | 51% | 2694 fps | 99.4% |
| Vihtavuori N140 | <<locked>> | 80% | 33,460 psi | 52% | 2694 fps | 98% |
| Vihtavuori N150 | <<locked>> | 86% | 32,909 psi | 52% | 2694 fps | 95.5% |
| Vihtavuori N530 | <<locked>> | 80% | 38,174 psi | 60% | 2808 fps | 96.7% |
| Vihtavuori N540 | <<locked>> | 80% | 32,169 psi | 50% | 2671 fps | 97% |
| Winchester 6.5 StaBALL | <<locked>> | 94% | 39,218 psi | 61% | 2838 fps | 95.9% |
| Winchester 748 | <<locked>> | 80% | 37,101 psi | 58% | 2848 fps | 97.3% |
| Winchester StaBALL Match | <<locked>> | 82% | 36,419 psi | 57% | 2808 fps | 95.2% |
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 115 powders for .300 RCM loaded with the .308 | 132gr | Brenneke TIG nature. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 3,320 fps; across all powders the maximum-charge window runs from 1,929 fps to 3,320 fps. Accurate 4350 gives the best case fill at 100 %, and 115 of the 115 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 132.0 gr projectile in 0.308" calls for a 1:11.5 twist; slower twists will usually not stabilise this weight. Accurate 4350, Alliant Reloder- TS 15.5, Alliant Reloder-16 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 52, Hodgdon CFE223 rank at the top here: for .300 RCM with the .308 | 132gr | Brenneke TIG nature they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate 2700, Bofors RP7, Hodgdon H414 burn incompletely and react more sensitively to barrel length and temperature. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.