Load Specifications
Load data in caliber .300 RCM with .308 | 120gr | GM Geschoss-Manufaktur Splinter TIP bullet and 87 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.
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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% | 54,331 psi | 85% | 3209 fps | 100% |
| Accurate 2200 | <<locked>> | 84% | 55,085 psi | 86% | 3304 fps | 97.3% |
| Accurate 2230 | <<locked>> | 84% | 56,028 psi | 88% | 3314 fps | 97.8% |
| Accurate 2460 | <<locked>> | 90% | 56,710 psi | 89% | 3281 fps | 100% |
| Accurate 2495 | <<locked>> | 98% | 53,998 psi | 85% | 3255 fps | 100% |
| Accurate 2520 | <<locked>> | 92% | 54,259 psi | 85% | 3281 fps | 99.8% |
| Accurate 4064ᴾ | <<locked>> | 100% | 53,896 psi | 84% | 3291 fps | 100% |
| Accurate LT-30 | <<locked>> | 86% | 55,230 psi | 87% | 3163 fps | 100% |
| Accurate LT-32 | <<locked>> | 86% | 55,651 psi | 87% | 3186 fps | 99.8% |
| ADI AR 2206H | <<locked>> | 96% | 57,058 psi | 89% | 3340 fps | 98.4% |
| ADI AR 2207 | <<locked>> | 84% | 56,086 psi | 88% | 3192 fps | 100% |
| ADI AR 2208ᴾ | <<locked>> | 100% | 54,737 psi | 86% | 3271 fps | 97.4% |
| ADI AR 2219 | <<locked>> | 86% | 55,434 psi | 87% | 3291 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 94% | 56,608 psi | 89% | 3301 fps | 99.2% |
| Alliant AR-Comp | <<locked>> | 94% | 55,521 psi | 87% | 3294 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 88% | 54,157 psi | 85% | 3360 fps | 98.5% |
| Alliant Power Pro 2000-MR | <<locked>> | 98% | 57,203 psi | 90% | 3451 fps | 97.7% |
| Alliant Reloder- TS 15.5ᴾ | <<locked>> | 100% | 53,330 psi | 84% | 3287 fps | 98.7% |
| Alliant Reloder-10x | <<locked>> | 88% | 54,302 psi | 85% | 3225 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 98% | 54,520 psi | 85% | 3314 fps | 97.6% |
| Alliant Reloder-17ᴾ | <<locked>> | 100% | 47,456 psi | 74% | 3261 fps | 97.1% |
| Alliant Reloder-7 | <<locked>> | 84% | 57,232 psi | 90% | 3212 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 86% | 54,418 psi | 85% | 3150 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 96% | 57,276 psi | 90% | 3346 fps | 97.5% |
| Bofors RP3ᴾ | <<locked>> | 100% | 53,635 psi | 84% | 3304 fps | 98.8% |
| Hodgdon Benchmark | <<locked>> | 92% | 55,564 psi | 87% | 3238 fps | 99.4% |
| Hodgdon BL-C2 | <<locked>> | 94% | 55,347 psi | 87% | 3323 fps | 99.5% |
| Hodgdon CFE223 | <<locked>> | 92% | 57,435 psi | 90% | 3432 fps | 98.1% |
| Hodgdon H322 | <<locked>> | 90% | 57,566 psi | 90% | 3323 fps | 100% |
| Hodgdon H335 | <<locked>> | 88% | 55,085 psi | 86% | 3284 fps | 100% |
| Hodgdon H380ᴾ | <<locked>> | 100% | 55,622 psi | 87% | 3307 fps | 96.5% |
| Hodgdon H4198 | <<locked>> | 84% | 57,203 psi | 90% | 3222 fps | 100% |
| Hodgdon H4895 | <<locked>> | 96% | 57,508 psi | 90% | 3353 fps | 98.9% |
| Hodgdon LEVERevolution | <<locked>> | 98% | 56,376 psi | 88% | 3383 fps | 99.1% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 33,634 psi | 53% | 2014 fps | 100% |
| Hodgdon VARGET | <<locked>> | 96% | 55,709 psi | 87% | 3301 fps | 98.6% |
| IMR 3031 | <<locked>> | 96% | 56,101 psi | 88% | 3353 fps | 100% |
| IMR 4064ᴾ | <<locked>> | 100% | 57,667 psi | 90% | 3314 fps | 98.1% |
| IMR 4198 | <<locked>> | 88% | 55,158 psi | 86% | 3196 fps | 100% |
| IMR 4895 | <<locked>> | 98% | 55,869 psi | 88% | 3353 fps | 98.4% |
| IMR 8208 XBR | <<locked>> | 94% | 56,608 psi | 89% | 3301 fps | 99.2% |
| Lovex D073.4 | <<locked>> | 84% | 56,550 psi | 89% | 3297 fps | 99.8% |
| Lovex D073.5 | <<locked>> | 90% | 56,956 psi | 89% | 3287 fps | 99.7% |
| Lovex D073.6 | <<locked>> | 96% | 55,782 psi | 87% | 3314 fps | 99.9% |
| Lovex S060 | <<locked>> | 96% | 57,653 psi | 90% | 3268 fps | 98.5% |
| Lovex S062ᴾ | <<locked>> | 100% | 56,478 psi | 89% | 3307 fps | 99.3% |
| Norma 200 | <<locked>> | 86% | 57,653 psi | 90% | 3251 fps | 100% |
| Norma 201 | <<locked>> | 96% | 55,361 psi | 87% | 3278 fps | 99.1% |
| Norma 202 | <<locked>> | 96% | 56,072 psi | 88% | 3301 fps | 100% |
| Norma 203Bᴾ | <<locked>> | 100% | 57,116 psi | 90% | 3360 fps | 98.5% |
| Ramshot Big Game | <<locked>> | 98% | 54,230 psi | 85% | 3320 fps | 97.9% |
| Ramshot Wild Boar | <<locked>> | 94% | 56,623 psi | 89% | 3330 fps | 98.3% |
| Ramshot X-Terminator | <<locked>> | 90% | 54,955 psi | 86% | 3241 fps | 98% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 33,736 psi | 53% | 2064 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 90% | 56,507 psi | 89% | 3294 fps | 99.8% |
| ReloadSwiss RS 52 | <<locked>> | 96% | 54,128 psi | 85% | 3383 fps | 97.5% |
| ReloadSwiss RS 60ᴾ | <<locked>> | 100% | 50,807 psi | 80% | 3350 fps | 99.6% |
| Rottweil R 901 | <<locked>> | 94% | 56,217 psi | 88% | 3274 fps | 100% |
| Rottweil R 902 | <<locked>> | 98% | 55,782 psi | 87% | 3274 fps | 99.1% |
| Rottweil R 903ᴾ | <<locked>> | 100% | 49,501 psi | 78% | 3219 fps | 97.9% |
| Shooters World AR Plus | <<locked>> | 84% | 56,550 psi | 89% | 3297 fps | 99.8% |
| Shooters World Match Rifle | <<locked>> | 96% | 55,782 psi | 87% | 3314 fps | 99.9% |
| Shooters World Precisionᴾ | <<locked>> | 100% | 56,478 psi | 89% | 3307 fps | 99.3% |
| Shooters World Tactical Rifle | <<locked>> | 88% | 56,913 psi | 89% | 3258 fps | 99% |
| SNPE Vectan BA6 1/2 | <<locked>> | 84% | 55,492 psi | 87% | 2910 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 86% | 55,840 psi | 88% | 3294 fps | 100% |
| SNPE Vectan SP 11ᴾ | <<locked>> | 100% | 52,040 psi | 82% | 3291 fps | 97.6% |
| SNPE Vectan SP 3 | <<locked>> | 88% | 55,361 psi | 87% | 3248 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 94% | 55,361 psi | 87% | 3268 fps | 96.2% |
| SNPE Vectan SP 9 | <<locked>> | 96% | 55,811 psi | 87% | 3304 fps | 98.2% |
| SNPE Vectan Tubal 3000 | <<locked>> | 94% | 54,665 psi | 86% | 3186 fps | 99.9% |
| SNPE Vectan Tubal 5000ᴾ | <<locked>> | 100% | 54,099 psi | 85% | 3173 fps | 100% |
| Somchem S321 | <<locked>> | 90% | 54,578 psi | 86% | 3281 fps | 99.2% |
| Somchem S335 | <<locked>> | 96% | 56,811 psi | 89% | 3228 fps | 100% |
| Somchem S341 | <<locked>> | 94% | 54,795 psi | 86% | 3268 fps | 98% |
| Somchem S355ᴾ | <<locked>> | 100% | 50,705 psi | 79% | 3228 fps | 97.9% |
| Vihtavuori N120 | <<locked>> | 84% | 55,999 psi | 88% | 3133 fps | 100% |
| Vihtavuori N130 | <<locked>> | 90% | 54,549 psi | 85% | 3169 fps | 100% |
| Vihtavuori N133 | <<locked>> | 94% | 54,375 psi | 85% | 3176 fps | 100% |
| Vihtavuori N135 | <<locked>> | 98% | 54,491 psi | 85% | 3255 fps | 100% |
| Vihtavuori N140 | <<locked>> | 98% | 56,594 psi | 89% | 3271 fps | 100% |
| Vihtavuori N150ᴾ | <<locked>> | 100% | 48,878 psi | 77% | 3156 fps | 98.6% |
| Vihtavuori N530 | <<locked>> | 94% | 57,392 psi | 90% | 3301 fps | 99.3% |
| Vihtavuori N540 | <<locked>> | 98% | 54,940 psi | 86% | 3261 fps | 100% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 44,962 psi | 70% | 3071 fps | 96.5% |
| Winchester 748 | <<locked>> | 94% | 56,260 psi | 88% | 3350 fps | 99.7% |
| Winchester StaBALL Match | <<locked>> | 96% | 55,477 psi | 87% | 3314 fps | 98.7% |
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% | 36,811 psi | 58% | 2877 fps | 99.5% |
| Accurate 2200 | <<locked>> | 80% | 48,095 psi | 75% | 3173 fps | 95.8% |
| Accurate 2230 | <<locked>> | 80% | 48,298 psi | 76% | 3173 fps | 96.3% |
| Accurate 2460 | <<locked>> | 80% | 39,929 psi | 63% | 2972 fps | 98.2% |
| Accurate 2495 | <<locked>> | 80% | 28,950 psi | 45% | 2730 fps | 98% |
| Accurate 2520 | <<locked>> | 80% | 35,273 psi | 55% | 2897 fps | 96.6% |
| Accurate 4064 | <<locked>> | 82% | 29,370 psi | 46% | 2753 fps | 95.5% |
| Accurate LT-30 | <<locked>> | 80% | 45,745 psi | 72% | 2999 fps | 99.8% |
| Accurate LT-32 | <<locked>> | 80% | 46,093 psi | 72% | 3015 fps | 99% |
| ADI AR 2206H | <<locked>> | 88% | 44,164 psi | 69% | 3094 fps | 95.8% |
| ADI AR 2207 | <<locked>> | 80% | 49,516 psi | 78% | 3091 fps | 100% |
| ADI AR 2208 | <<locked>> | 94% | 45,295 psi | 71% | 3091 fps | 95.3% |
| ADI AR 2219 | <<locked>> | 80% | 45,034 psi | 71% | 3107 fps | 99.7% |
| ADI Benchmark 8208 | <<locked>> | 82% | 38,406 psi | 60% | 2936 fps | 95.5% |
| Alliant AR-Comp | <<locked>> | 80% | 34,098 psi | 53% | 2900 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 41,060 psi | 64% | 3091 fps | 95.6% |
| Alliant Power Pro 2000-MR | 60.6 gr | 92% | 46,499 psi | 73% | 3235 fps | 95% |
| Alliant Reloder- TS 15.5 | <<locked>> | 90% | 38,377 psi | 60% | 2982 fps | 95.2% |
| Alliant Reloder-10x | <<locked>> | 80% | 42,018 psi | 66% | 3009 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 92% | 44,817 psi | 70% | 3127 fps | 95.4% |
| Alliant Reloder-17 | <<locked>> | 96% | 41,350 psi | 65% | 3120 fps | 95.1% |
| Alliant Reloder-7 | <<locked>> | 80% | 50,459 psi | 79% | 3107 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 44,614 psi | 70% | 2982 fps | 99.9% |
| Baschieri & Pellagri 107 | <<locked>> | 90% | 46,702 psi | 73% | 3156 fps | 95.2% |
| Bofors RP3 | <<locked>> | 90% | 37,681 psi | 59% | 2976 fps | 95.1% |
| Hodgdon Benchmark | <<locked>> | 80% | 38,174 psi | 60% | 2890 fps | 96.2% |
| Hodgdon BL-C2 | <<locked>> | 82% | 36,216 psi | 57% | 2933 fps | 95.5% |
| Hodgdon CFE223 | 57.9 gr | 86% | 46,137 psi | 72% | 3219 fps | 95.7% |
| Hodgdon H322 | <<locked>> | 80% | 40,973 psi | 64% | 3022 fps | 99.3% |
| Hodgdon H335 | <<locked>> | 80% | 41,568 psi | 65% | 3035 fps | 98.7% |
| Hodgdon H380 | <<locked>> | 98% | 52,083 psi | 82% | 3248 fps | 95.7% |
| Hodgdon H4198 | <<locked>> | 80% | 50,372 psi | 79% | 3107 fps | 99.9% |
| Hodgdon H4895 | <<locked>> | 86% | 41,495 psi | 65% | 3045 fps | 95.7% |
| Hodgdon LEVERevolution | <<locked>> | 88% | 39,900 psi | 63% | 3054 fps | 95.7% |
| Hodgdon TrailBoss | <<locked>> | 80% | 24,918 psi | 39% | 1808 fps | 100% |
| Hodgdon VARGET | <<locked>> | 86% | 40,350 psi | 63% | 2999 fps | 95.3% |
| IMR 3031 | <<locked>> | 80% | 32,605 psi | 51% | 2877 fps | 98.2% |
| IMR 4064 | <<locked>> | 92% | 44,657 psi | 70% | 3074 fps | 95.4% |
| IMR 4198 | <<locked>> | 80% | 43,149 psi | 68% | 2992 fps | 100% |
| IMR 4895 | <<locked>> | 90% | 42,772 psi | 67% | 3100 fps | 95.6% |
| IMR 8208 XBR | <<locked>> | 82% | 38,406 psi | 60% | 2936 fps | 95.5% |
| Lovex D073.4 | <<locked>> | 80% | 49,081 psi | 77% | 3173 fps | 99.2% |
| Lovex D073.5 | <<locked>> | 80% | 39,682 psi | 62% | 2966 fps | 97% |
| Lovex D073.6 | <<locked>> | 80% | 31,575 psi | 49% | 2808 fps | 95.1% |
| Lovex S060 | <<locked>> | 86% | 42,380 psi | 66% | 2979 fps | 95.3% |
| Lovex S062 | <<locked>> | 88% | 38,493 psi | 60% | 2953 fps | 95.7% |
| Norma 200 | <<locked>> | 80% | 47,572 psi | 75% | 3091 fps | 100% |
| Norma 201 | <<locked>> | 84% | 37,710 psi | 59% | 2923 fps | 95.4% |
| Norma 202 | <<locked>> | 80% | 32,982 psi | 52% | 2822 fps | 96.5% |
| Norma 203B | <<locked>> | 92% | 44,005 psi | 69% | 3114 fps | 95.9% |
| Ramshot Big Game | <<locked>> | 92% | 44,164 psi | 69% | 3130 fps | 95.6% |
| Ramshot Wild Boar | <<locked>> | 86% | 42,902 psi | 67% | 3071 fps | 95.4% |
| Ramshot X-Terminator | <<locked>> | 82% | 42,003 psi | 66% | 2992 fps | 95% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 24,918 psi | 39% | 1847 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 40,466 psi | 63% | 2986 fps | 97.6% |
| ReloadSwiss RS 52 | 58.7 gr | 92% | 46,847 psi | 73% | 3245 fps | 95.9% |
| ReloadSwiss RS 60 | <<locked>> | 90% | 36,056 psi | 56% | 2995 fps | 95.8% |
| Rottweil R 901 | <<locked>> | 80% | 36,477 psi | 57% | 2881 fps | 97.3% |
| Rottweil R 902 | <<locked>> | 86% | 38,000 psi | 60% | 2920 fps | 95.5% |
| Rottweil R 903 | <<locked>> | 94% | 40,437 psi | 63% | 3035 fps | 95.6% |
| Shooters World AR Plus | <<locked>> | 80% | 49,081 psi | 77% | 3173 fps | 99.2% |
| Shooters World Match Rifle | <<locked>> | 80% | 31,575 psi | 49% | 2808 fps | 95.1% |
| Shooters World Precision | <<locked>> | 88% | 38,493 psi | 60% | 2953 fps | 95.7% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 43,076 psi | 68% | 3005 fps | 96.5% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 49,966 psi | 78% | 2831 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 45,324 psi | 71% | 3107 fps | 99.2% |
| SNPE Vectan SP 11 | <<locked>> | 94% | 42,612 psi | 67% | 3100 fps | 95.2% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 42,975 psi | 67% | 3031 fps | 99.8% |
| SNPE Vectan SP 7 | <<locked>> | 92% | 51,634 psi | 81% | 3202 fps | 95.4% |
| SNPE Vectan SP 9 | <<locked>> | 88% | 42,801 psi | 67% | 3054 fps | 95.4% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 35,099 psi | 55% | 2795 fps | 97.1% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 28,471 psi | 45% | 2628 fps | 95.9% |
| Somchem S321 | <<locked>> | 80% | 38,363 psi | 60% | 2956 fps | 95.9% |
| Somchem S335 | <<locked>> | 80% | 34,447 psi | 54% | 2795 fps | 97.8% |
| Somchem S341 | <<locked>> | 88% | 44,324 psi | 69% | 3074 fps | 95.7% |
| Somchem S355 | <<locked>> | 94% | 41,568 psi | 65% | 3045 fps | 95.7% |
| Vihtavuori N120 | <<locked>> | 80% | 49,472 psi | 78% | 3038 fps | 100% |
| Vihtavuori N130 | <<locked>> | 80% | 40,016 psi | 63% | 2910 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 35,128 psi | 55% | 2812 fps | 99.2% |
| Vihtavuori N135 | <<locked>> | 80% | 30,008 psi | 47% | 2753 fps | 98.2% |
| Vihtavuori N140 | <<locked>> | 80% | 31,212 psi | 49% | 2753 fps | 96.2% |
| Vihtavuori N150 | <<locked>> | 90% | 34,853 psi | 55% | 2858 fps | 95.1% |
| Vihtavuori N530 | <<locked>> | 82% | 38,174 psi | 60% | 2927 fps | 95.6% |
| Vihtavuori N540 | <<locked>> | 80% | 29,979 psi | 47% | 2723 fps | 95% |
| Winchester 6.5 StaBALL | <<locked>> | 98% | 42,061 psi | 66% | 3009 fps | 95.6% |
| Winchester 748 | <<locked>> | 80% | 34,534 psi | 54% | 2900 fps | 95.2% |
| Winchester StaBALL Match | <<locked>> | 88% | 41,800 psi | 66% | 3054 fps | 95.9% |
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 87 powders for .300 RCM loaded with the .308 | 120gr | GM Geschoss-Manufaktur Splinter TIP. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 3,451 fps; across all powders the maximum-charge window runs from 2,014 fps to 3,451 fps. Accurate 4064 gives the best case fill at 100 %, and 87 of the 87 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 120.0 gr projectile in 0.308" calls for a 1:11.5 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 CFE223 rank at the top here: for .300 RCM with the .308 | 120gr | GM Geschoss-Manufaktur Splinter TIP 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.