Load Specifications
Load data in caliber .300 RCM with .308 | 130gr | Barnes TTSX BT bullet and 89 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 LEVERevolution.
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>> | 92% | 57,101 psi | 89% | 3127 fps | 100% |
| Accurate 2200 | <<locked>> | 84% | 57,682 psi | 90% | 3235 fps | 98.4% |
| Accurate 2230 | <<locked>> | 82% | 54,998 psi | 86% | 3182 fps | 98.3% |
| Accurate 2460 | <<locked>> | 88% | 55,840 psi | 88% | 3150 fps | 100% |
| Accurate 2495 | <<locked>> | 98% | 57,551 psi | 90% | 3179 fps | 100% |
| Accurate 2520 | <<locked>> | 92% | 57,566 psi | 90% | 3212 fps | 100% |
| Accurate 4064ᴾ | <<locked>> | 100% | 57,130 psi | 90% | 3219 fps | 100% |
| Accurate LT-30 | <<locked>> | 86% | 57,435 psi | 90% | 3077 fps | 100% |
| Accurate LT-32 | <<locked>> | 84% | 54,650 psi | 86% | 3054 fps | 100% |
| ADI AR 2206H | <<locked>> | 94% | 56,420 psi | 88% | 3215 fps | 98.9% |
| ADI AR 2207 | <<locked>> | 82% | 55,419 psi | 87% | 3058 fps | 100% |
| ADI AR 2208ᴾ | <<locked>> | 100% | 57,580 psi | 90% | 3205 fps | 98.5% |
| ADI AR 2219 | <<locked>> | 84% | 54,346 psi | 85% | 3150 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 92% | 55,898 psi | 88% | 3173 fps | 99.5% |
| Alliant AR-Comp | <<locked>> | 92% | 55,071 psi | 86% | 3159 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 88% | 57,145 psi | 90% | 3287 fps | 99.4% |
| Alliant Power Pro 2000-MR | <<locked>> | 96% | 56,130 psi | 88% | 3320 fps | 98.3% |
| Alliant Reloder- TS 15.5ᴾ | <<locked>> | 100% | 56,550 psi | 89% | 3225 fps | 99.5% |
| Alliant Reloder-10x | <<locked>> | 88% | 57,159 psi | 90% | 3143 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 98% | 57,406 psi | 90% | 3248 fps | 98.7% |
| Alliant Reloder-17ᴾ | <<locked>> | 100% | 50,386 psi | 79% | 3215 fps | 98.5% |
| Alliant Reloder-7 | <<locked>> | 82% | 56,289 psi | 88% | 3074 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 86% | 56,898 psi | 89% | 3071 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 94% | 56,666 psi | 89% | 3225 fps | 98.1% |
| Bofors RP3ᴾ | <<locked>> | 100% | 56,840 psi | 89% | 3238 fps | 99.5% |
| Hodgdon Benchmark | <<locked>> | 90% | 54,694 psi | 86% | 3107 fps | 99.7% |
| Hodgdon BL-C2 | <<locked>> | 92% | 54,447 psi | 85% | 3192 fps | 99.7% |
| Hodgdon CFE223 | <<locked>> | 90% | 56,565 psi | 89% | 3301 fps | 98.6% |
| Hodgdon H322 | <<locked>> | 88% | 56,449 psi | 88% | 3182 fps | 100% |
| Hodgdon H335 | <<locked>> | 86% | 54,172 psi | 85% | 3153 fps | 100% |
| Hodgdon H380 | <<locked>> | 98% | 54,940 psi | 86% | 3186 fps | 97.1% |
| Hodgdon H4198 | <<locked>> | 82% | 56,086 psi | 88% | 3084 fps | 100% |
| Hodgdon H4895 | <<locked>> | 94% | 56,942 psi | 89% | 3228 fps | 99.3% |
| Hodgdon LEVERevolution | <<locked>> | 96% | 55,550 psi | 87% | 3251 fps | 99.5% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 33,953 psi | 53% | 1939 fps | 100% |
| Hodgdon VARGET | <<locked>> | 94% | 55,042 psi | 86% | 3176 fps | 99% |
| IMR 3031 | <<locked>> | 94% | 55,680 psi | 87% | 3219 fps | 100% |
| IMR 4064 | <<locked>> | 98% | 56,971 psi | 89% | 3189 fps | 98.6% |
| IMR 4198 | <<locked>> | 88% | 57,464 psi | 90% | 3104 fps | 100% |
| IMR 4895 | <<locked>> | 96% | 55,187 psi | 86% | 3228 fps | 98.8% |
| IMR 8208 XBR | <<locked>> | 92% | 55,898 psi | 88% | 3173 fps | 99.5% |
| Lovex D073.4 | <<locked>> | 82% | 55,492 psi | 87% | 3163 fps | 100% |
| Lovex D073.5 | <<locked>> | 88% | 55,840 psi | 88% | 3156 fps | 99.9% |
| Lovex D073.6 | <<locked>> | 94% | 55,201 psi | 87% | 3189 fps | 100% |
| Lovex S060 | <<locked>> | 94% | 56,768 psi | 89% | 3140 fps | 98.9% |
| Lovex S062 | <<locked>> | 98% | 55,956 psi | 88% | 3182 fps | 99.6% |
| Norma 200 | <<locked>> | 84% | 56,681 psi | 89% | 3110 fps | 100% |
| Norma 201 | <<locked>> | 94% | 54,752 psi | 86% | 3153 fps | 99.5% |
| Norma 202 | <<locked>> | 94% | 55,187 psi | 86% | 3166 fps | 100% |
| Norma 203B | <<locked>> | 98% | 56,405 psi | 88% | 3232 fps | 98.9% |
| Ramshot Big Game | <<locked>> | 98% | 57,319 psi | 90% | 3261 fps | 98.9% |
| Ramshot TAC | <<locked>> | 92% | 56,898 psi | 89% | 3179 fps | 96.8% |
| Ramshot Wild Boar | <<locked>> | 92% | 55,579 psi | 87% | 3199 fps | 98.8% |
| Ramshot X-Terminator | <<locked>> | 90% | 57,392 psi | 90% | 3173 fps | 98.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 34,142 psi | 54% | 1982 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 88% | 55,709 psi | 87% | 3166 fps | 99.9% |
| ReloadSwiss RS 52 | <<locked>> | 96% | 57,450 psi | 90% | 3320 fps | 98.7% |
| ReloadSwiss RS 60ᴾ | <<locked>> | 100% | 53,911 psi | 84% | 3297 fps | 100% |
| Rottweil R 901 | <<locked>> | 92% | 55,448 psi | 87% | 3143 fps | 100% |
| Rottweil R 902 | <<locked>> | 96% | 55,129 psi | 86% | 3150 fps | 99.5% |
| Rottweil R 903ᴾ | <<locked>> | 100% | 52,721 psi | 83% | 3163 fps | 98.9% |
| Shooters World AR Plus | <<locked>> | 82% | 55,492 psi | 87% | 3163 fps | 100% |
| Shooters World Match Rifle | <<locked>> | 94% | 55,201 psi | 87% | 3189 fps | 100% |
| Shooters World Precision | <<locked>> | 98% | 55,956 psi | 88% | 3182 fps | 99.6% |
| Shooters World Tactical Rifle | <<locked>> | 86% | 55,738 psi | 87% | 3127 fps | 99.3% |
| SNPE Vectan BA6 1/2 | <<locked>> | 84% | 57,363 psi | 90% | 2815 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 84% | 54,882 psi | 86% | 3159 fps | 100% |
| SNPE Vectan SP 11ᴾ | <<locked>> | 100% | 55,288 psi | 87% | 3238 fps | 98.7% |
| SNPE Vectan SP 3 | <<locked>> | 86% | 54,650 psi | 86% | 3114 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 92% | 54,592 psi | 86% | 3146 fps | 96.9% |
| SNPE Vectan SP 9 | <<locked>> | 94% | 55,027 psi | 86% | 3179 fps | 98.7% |
| SNPE Vectan Tubal 3000 | <<locked>> | 94% | 57,551 psi | 90% | 3114 fps | 100% |
| SNPE Vectan Tubal 5000ᴾ | <<locked>> | 100% | 56,898 psi | 89% | 3097 fps | 100% |
| Somchem S321 | <<locked>> | 90% | 57,305 psi | 90% | 3212 fps | 99.8% |
| Somchem S335 | <<locked>> | 94% | 56,115 psi | 88% | 3104 fps | 100% |
| Somchem S341 | <<locked>> | 92% | 53,853 psi | 84% | 3140 fps | 98.5% |
| Somchem S355ᴾ | <<locked>> | 100% | 53,417 psi | 84% | 3163 fps | 98.9% |
| Somchem S365ᴾ | <<locked>> | 100% | 38,261 psi | 60% | 2956 fps | 97% |
| Vihtavuori N120 | <<locked>> | 82% | 55,317 psi | 87% | 3002 fps | 100% |
| Vihtavuori N130 | <<locked>> | 90% | 56,985 psi | 89% | 3081 fps | 100% |
| Vihtavuori N133 | <<locked>> | 94% | 57,377 psi | 90% | 3100 fps | 100% |
| Vihtavuori N135 | <<locked>> | 98% | 57,711 psi | 90% | 3176 fps | 100% |
| Vihtavuori N140 | <<locked>> | 96% | 56,057 psi | 88% | 3146 fps | 100% |
| Vihtavuori N150ᴾ | <<locked>> | 100% | 51,837 psi | 81% | 3097 fps | 99.5% |
| Vihtavuori N530 | <<locked>> | 92% | 56,652 psi | 89% | 3176 fps | 99.6% |
| Vihtavuori N540 | <<locked>> | 96% | 54,244 psi | 85% | 3136 fps | 100% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 47,340 psi | 74% | 3022 fps | 97.9% |
| Winchester 748 | <<locked>> | 92% | 55,622 psi | 87% | 3222 fps | 99.9% |
| Winchester StaBALL Match | <<locked>> | 94% | 54,505 psi | 85% | 3186 fps | 99.1% |
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% | 38,943 psi | 61% | 2815 fps | 99.9% |
| Accurate 2200 | <<locked>> | 80% | 50,618 psi | 79% | 3110 fps | 97.2% |
| Accurate 2230 | <<locked>> | 80% | 51,213 psi | 80% | 3114 fps | 97.7% |
| Accurate 2460 | <<locked>> | 80% | 42,366 psi | 66% | 2913 fps | 99.2% |
| Accurate 2495 | <<locked>> | 80% | 30,922 psi | 48% | 2680 fps | 99.1% |
| Accurate 2520 | <<locked>> | 80% | 37,637 psi | 59% | 2848 fps | 98% |
| Accurate 4064 | <<locked>> | 80% | 29,254 psi | 46% | 2648 fps | 96.4% |
| Accurate LT-30 | <<locked>> | 80% | 47,761 psi | 75% | 2927 fps | 100% |
| Accurate LT-32 | <<locked>> | 80% | 48,124 psi | 75% | 2943 fps | 99.6% |
| ADI AR 2206H | <<locked>> | 84% | 40,944 psi | 64% | 2917 fps | 95.8% |
| ADI AR 2207 | <<locked>> | 80% | 51,909 psi | 81% | 3005 fps | 100% |
| ADI AR 2208 | <<locked>> | 90% | 41,959 psi | 66% | 2913 fps | 95.2% |
| ADI AR 2219 | <<locked>> | 80% | 47,369 psi | 74% | 3035 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 80% | 37,840 psi | 59% | 2818 fps | 96.2% |
| Alliant AR-Comp | <<locked>> | 80% | 36,390 psi | 57% | 2838 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 43,598 psi | 68% | 3035 fps | 97.2% |
| Alliant Power Pro 2000-MR | 58.7 gr | 90% | 45,614 psi | 71% | 3114 fps | 95.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 86% | 35,708 psi | 56% | 2812 fps | 95.1% |
| Alliant Reloder-10x | <<locked>> | 80% | 44,251 psi | 69% | 2936 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 88% | 41,466 psi | 65% | 2946 fps | 95.3% |
| Alliant Reloder-17 | <<locked>> | 92% | 38,159 psi | 60% | 2943 fps | 95% |
| Alliant Reloder-7 | <<locked>> | 80% | 52,852 psi | 83% | 3022 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 46,644 psi | 73% | 2910 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 86% | 42,902 psi | 67% | 2969 fps | 95% |
| Bofors RP3 | <<locked>> | 86% | 35,070 psi | 55% | 2808 fps | 95% |
| Hodgdon Benchmark | <<locked>> | 80% | 40,103 psi | 63% | 2828 fps | 97.5% |
| Hodgdon BL-C2 | <<locked>> | 80% | 35,737 psi | 56% | 2818 fps | 96.3% |
| Hodgdon CFE223 | <<locked>> | 82% | 42,496 psi | 67% | 3028 fps | 95.5% |
| Hodgdon H322 | <<locked>> | 80% | 43,337 psi | 68% | 2959 fps | 99.8% |
| Hodgdon H335 | <<locked>> | 80% | 44,063 psi | 69% | 2972 fps | 99.5% |
| Hodgdon H380 | <<locked>> | 94% | 47,906 psi | 75% | 3064 fps | 95.6% |
| Hodgdon H4198 | <<locked>> | 80% | 52,620 psi | 82% | 3031 fps | 100% |
| Hodgdon H4895 | <<locked>> | 82% | 38,421 psi | 60% | 2867 fps | 95.6% |
| Hodgdon LEVERevolution | 53.7 gr | 84% | 36,767 psi | 58% | 2874 fps | 95.5% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,121 psi | 39% | 1736 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 37,289 psi | 58% | 2822 fps | 95.1% |
| IMR 3031 | <<locked>> | 80% | 34,751 psi | 54% | 2825 fps | 99.2% |
| IMR 4064 | <<locked>> | 88% | 41,336 psi | 65% | 2897 fps | 95.3% |
| IMR 4198 | <<locked>> | 80% | 45,194 psi | 71% | 2910 fps | 100% |
| IMR 4895 | <<locked>> | 86% | 39,755 psi | 62% | 2923 fps | 95.5% |
| IMR 8208 XBR | <<locked>> | 80% | 37,840 psi | 59% | 2818 fps | 96.2% |
| Lovex D073.4 | <<locked>> | 80% | 51,677 psi | 81% | 3100 fps | 99.8% |
| Lovex D073.5 | <<locked>> | 80% | 42,148 psi | 66% | 2913 fps | 98.3% |
| Lovex D073.6 | <<locked>> | 80% | 33,808 psi | 53% | 2766 fps | 96.8% |
| Lovex S060 | <<locked>> | 82% | 39,291 psi | 62% | 2805 fps | 95.3% |
| Lovex S062 | <<locked>> | 84% | 35,868 psi | 56% | 2785 fps | 95.7% |
| Norma 200 | <<locked>> | 80% | 49,835 psi | 78% | 3009 fps | 100% |
| Norma 201 | <<locked>> | 80% | 34,838 psi | 55% | 2746 fps | 95.3% |
| Norma 202 | <<locked>> | 80% | 34,998 psi | 55% | 2769 fps | 97.9% |
| Norma 203B | <<locked>> | 88% | 40,683 psi | 64% | 2933 fps | 95.8% |
| Ramshot Big Game | <<locked>> | 88% | 40,582 psi | 64% | 2946 fps | 95.4% |
| Ramshot TAC | <<locked>> | 88% | 49,603 psi | 78% | 3051 fps | 95.2% |
| Ramshot Wild Boar | <<locked>> | 82% | 39,494 psi | 62% | 2887 fps | 95.2% |
| Ramshot X-Terminator | <<locked>> | 80% | 41,220 psi | 65% | 2871 fps | 95.6% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 25,179 psi | 39% | 1775 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 42,714 psi | 67% | 2930 fps | 98.7% |
| ReloadSwiss RS 52 | 55.7 gr | 88% | 43,381 psi | 68% | 3061 fps | 95.8% |
| ReloadSwiss RS 60 | <<locked>> | 86% | 33,402 psi | 52% | 2825 fps | 95.7% |
| Rottweil R 901 | <<locked>> | 80% | 38,493 psi | 60% | 2822 fps | 98.5% |
| Rottweil R 902 | <<locked>> | 82% | 35,331 psi | 55% | 2749 fps | 95.5% |
| Rottweil R 903 | <<locked>> | 90% | 37,420 psi | 59% | 2861 fps | 95.6% |
| Shooters World AR Plus | <<locked>> | 80% | 51,677 psi | 81% | 3100 fps | 99.8% |
| Shooters World Match Rifle | <<locked>> | 80% | 33,808 psi | 53% | 2766 fps | 96.8% |
| Shooters World Precision | <<locked>> | 84% | 35,868 psi | 56% | 2785 fps | 95.7% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 45,223 psi | 71% | 2943 fps | 97.8% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 51,663 psi | 81% | 2740 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 47,921 psi | 75% | 3041 fps | 99.8% |
| SNPE Vectan SP 11 | <<locked>> | 90% | 39,363 psi | 62% | 2923 fps | 95.1% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 45,049 psi | 71% | 2956 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 88% | 47,181 psi | 74% | 3015 fps | 95.2% |
| SNPE Vectan SP 9 | <<locked>> | 84% | 39,363 psi | 62% | 2874 fps | 95.2% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 36,724 psi | 58% | 2733 fps | 98.3% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 29,907 psi | 47% | 2572 fps | 97.3% |
| Somchem S321 | <<locked>> | 80% | 40,480 psi | 63% | 2897 fps | 97.3% |
| Somchem S335 | <<locked>> | 80% | 36,129 psi | 57% | 2733 fps | 98.8% |
| Somchem S341 | <<locked>> | 84% | 40,814 psi | 64% | 2894 fps | 95.6% |
| Somchem S355 | <<locked>> | 90% | 38,653 psi | 61% | 2874 fps | 95.7% |
| Somchem S365 | <<locked>> | 96% | 33,649 psi | 53% | 2831 fps | 95% |
| Vihtavuori N120 | <<locked>> | 80% | 51,851 psi | 81% | 2953 fps | 100% |
| Vihtavuori N130 | <<locked>> | 80% | 41,814 psi | 66% | 2835 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 36,811 psi | 58% | 2743 fps | 99.8% |
| Vihtavuori N135 | <<locked>> | 80% | 31,836 psi | 50% | 2697 fps | 99.2% |
| Vihtavuori N140 | <<locked>> | 80% | 33,112 psi | 52% | 2703 fps | 97.7% |
| Vihtavuori N150 | <<locked>> | 86% | 32,343 psi | 51% | 2690 fps | 95% |
| Vihtavuori N530 | <<locked>> | 80% | 37,594 psi | 59% | 2812 fps | 96.3% |
| Vihtavuori N540 | <<locked>> | 80% | 31,836 psi | 50% | 2677 fps | 96.7% |
| Winchester 6.5 StaBALL | <<locked>> | 94% | 38,667 psi | 61% | 2838 fps | 95.4% |
| Winchester 748 | <<locked>> | 80% | 36,521 psi | 57% | 2848 fps | 96.9% |
| Winchester StaBALL Match | <<locked>> | 84% | 38,667 psi | 61% | 2877 fps | 95.8% |
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 89 powders for .300 RCM loaded with the .308 | 130gr | Barnes TTSX BT. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 3,320 fps; across all powders the maximum-charge window runs from 1,939 fps to 3,320 fps. Accurate 4064 gives the best case fill at 100 %, and 89 of the 89 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 130.0 gr projectile in 0.308" calls for a 1:12.5 twist; slower twists will usually not stabilise this weight. Accurate 4064, ADI AR 2208, Alliant Reloder- TS 15.5 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 LEVERevolution rank at the top here: for .300 RCM with the .308 | 130gr | Barnes TTSX BT 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.