Load Specifications
Load data in caliber .300 CR with .308 | 135gr | Berger Target FB bullet and 58 powders. The key underlying parameters are shown in the table above.
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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Max Load - Barrel Length: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 1680 | <<locked>> | 86% | 53,635 psi | 86% | 2762 fps | 100% |
| Accurate 2015ᴾ | <<locked>> | 100% | 53,722 psi | 86% | 2848 fps | 100% |
| Accurate 2460 | <<locked>> | 96% | 53,113 psi | 85% | 2864 fps | 99% |
| Accurate 2495ᴾ | <<locked>> | 100% | 42,018 psi | 67% | 2736 fps | 99.7% |
| Accurate 2520ᴾ | <<locked>> | 100% | 53,447 psi | 86% | 2910 fps | 98.8% |
| Accurate 4064ᴾ | <<locked>> | 100% | 39,059 psi | 63% | 2697 fps | 97.4% |
| Accurate LT-30 | <<locked>> | 92% | 54,143 psi | 87% | 2776 fps | 99.8% |
| Accurate LT-32 | <<locked>> | 92% | 54,636 psi | 88% | 2789 fps | 98.9% |
| ADI AR 2207 | <<locked>> | 90% | 54,099 psi | 87% | 2818 fps | 100% |
| ADI AR 2219 | <<locked>> | 94% | 56,202 psi | 90% | 2936 fps | 99.9% |
| ADI Benchmark 8208ᴾ | <<locked>> | 100% | 53,040 psi | 85% | 2867 fps | 97.2% |
| Alliant AR-Compᴾ | <<locked>> | 100% | 49,966 psi | 80% | 2877 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 96% | 53,577 psi | 86% | 2969 fps | 96.8% |
| Alliant Reloder-10x | <<locked>> | 96% | 54,723 psi | 88% | 2877 fps | 100% |
| Alliant Reloder-7 | <<locked>> | 90% | 55,593 psi | 89% | 2825 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 94% | 55,999 psi | 90% | 2815 fps | 99.9% |
| Hodgdon Benchmark | <<locked>> | 98% | 53,142 psi | 85% | 2822 fps | 97.8% |
| Hodgdon BL-C2ᴾ | <<locked>> | 100% | 50,357 psi | 81% | 2887 fps | 97.4% |
| Hodgdon H322 | <<locked>> | 96% | 54,114 psi | 87% | 2907 fps | 99.8% |
| Hodgdon H335 | <<locked>> | 96% | 55,288 psi | 89% | 2927 fps | 99.4% |
| Hodgdon H4198 | <<locked>> | 88% | 52,852 psi | 85% | 2776 fps | 99.5% |
| Hodgdon H4895ᴾ | <<locked>> | 100% | 50,038 psi | 80% | 2858 fps | 95.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 32,358 psi | 52% | 1699 fps | 100% |
| IMR 3031ᴾ | <<locked>> | 100% | 47,616 psi | 76% | 2867 fps | 99.7% |
| IMR 4198 | <<locked>> | 96% | 55,782 psi | 89% | 2844 fps | 100% |
| IMR 4227 | <<locked>> | 86% | 56,130 psi | 90% | 2776 fps | 100% |
| IMR 8208 XBRᴾ | <<locked>> | 100% | 53,040 psi | 85% | 2867 fps | 97.2% |
| Lovex D073.4 | <<locked>> | 90% | 53,882 psi | 86% | 2884 fps | 98.7% |
| Lovex D073.5 | <<locked>> | 96% | 53,084 psi | 85% | 2864 fps | 98.1% |
| Lovex D073.6ᴾ | <<locked>> | 100% | 46,891 psi | 75% | 2822 fps | 97.8% |
| Lovex S053 | <<locked>> | 86% | 54,911 psi | 88% | 2723 fps | 100% |
| Norma 200 | <<locked>> | 92% | 54,824 psi | 88% | 2858 fps | 100% |
| Norma 201ᴾ | <<locked>> | 100% | 48,660 psi | 78% | 2799 fps | 96.5% |
| Norma 202ᴾ | <<locked>> | 100% | 48,341 psi | 78% | 2818 fps | 98.7% |
| Ramshot X-Terminator | <<locked>> | 98% | 55,796 psi | 89% | 2874 fps | 96.1% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 32,343 psi | 52% | 1742 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 86% | 56,420 psi | 90% | 2818 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 96% | 53,519 psi | 86% | 2874 fps | 98.5% |
| Rottweil R 901ᴾ | <<locked>> | 100% | 52,910 psi | 85% | 2858 fps | 99% |
| Rottweil R 902ᴾ | <<locked>> | 100% | 45,861 psi | 74% | 2740 fps | 95.8% |
| Shooters World AR Plus | <<locked>> | 90% | 53,882 psi | 86% | 2884 fps | 98.7% |
| Shooters World Match Rifleᴾ | <<locked>> | 100% | 46,891 psi | 75% | 2822 fps | 97.8% |
| Shooters World Tactical Rifle | <<locked>> | 94% | 54,839 psi | 88% | 2844 fps | 97% |
| SNPE Vectan BA6 1/2 | <<locked>> | 90% | 55,448 psi | 89% | 2572 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 92% | 52,924 psi | 85% | 2884 fps | 99.1% |
| SNPE Vectan SP 3 | <<locked>> | 96% | 55,550 psi | 89% | 2887 fps | 100% |
| SNPE Vectan Tubal 3000ᴾ | <<locked>> | 100% | 52,301 psi | 84% | 2779 fps | 99% |
| SNPE Vectan Tubal 5000ᴾ | <<locked>> | 100% | 41,829 psi | 67% | 2625 fps | 98.3% |
| Somchem S321 | <<locked>> | 98% | 54,694 psi | 88% | 2917 fps | 97.8% |
| Somchem S335ᴾ | <<locked>> | 100% | 50,386 psi | 81% | 2776 fps | 99.4% |
| Vihtavuori N120 | <<locked>> | 90% | 54,114 psi | 87% | 2766 fps | 100% |
| Vihtavuori N130 | <<locked>> | 98% | 55,332 psi | 89% | 2825 fps | 100% |
| Vihtavuori N133ᴾ | <<locked>> | 100% | 51,300 psi | 82% | 2779 fps | 100% |
| Vihtavuori N135ᴾ | <<locked>> | 100% | 43,178 psi | 69% | 2740 fps | 99.7% |
| Vihtavuori N140ᴾ | <<locked>> | 100% | 45,977 psi | 74% | 2753 fps | 98.5% |
| Vihtavuori N530ᴾ | <<locked>> | 100% | 53,998 psi | 87% | 2871 fps | 97.4% |
| Vihtavuori N540ᴾ | <<locked>> | 100% | 44,338 psi | 71% | 2740 fps | 97.8% |
| Winchester 748ᴾ | <<locked>> | 100% | 51,488 psi | 83% | 2904 fps | 97.9% |
Start Load - Barrel Length: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 1680 | <<locked>> | 80% | 44,063 psi | 71% | 2615 fps | 99.9% |
| Accurate 2015 | <<locked>> | 80% | 28,906 psi | 46% | 2372 fps | 96.3% |
| Accurate 2460 | <<locked>> | 84% | 35,143 psi | 56% | 2539 fps | 95.2% |
| Accurate 2495 | <<locked>> | 86% | 26,281 psi | 42% | 2375 fps | 95.7% |
| Accurate 2520 | <<locked>> | 90% | 37,492 psi | 60% | 2631 fps | 95.5% |
| Accurate 4064 | <<locked>> | 94% | 32,285 psi | 52% | 2546 fps | 95.2% |
| Accurate LT-30 | <<locked>> | 80% | 37,594 psi | 60% | 2487 fps | 97.5% |
| Accurate LT-32 | <<locked>> | 80% | 37,971 psi | 61% | 2490 fps | 95.5% |
| ADI AR 2207 | <<locked>> | 80% | 39,581 psi | 63% | 2589 fps | 100% |
| ADI AR 2219 | <<locked>> | 80% | 34,940 psi | 56% | 2552 fps | 96.5% |
| ADI Benchmark 8208 | <<locked>> | 94% | 43,976 psi | 71% | 2713 fps | 95.2% |
| Alliant AR-Comp | <<locked>> | 80% | 26,571 psi | 43% | 2382 fps | 97.9% |
| Alliant Power Pro 1200-R | <<locked>> | 92% | 47,079 psi | 75% | 2861 fps | 95.4% |
| Alliant Reloder-10x | <<locked>> | 80% | 33,228 psi | 53% | 2493 fps | 98.7% |
| Alliant Reloder-7 | <<locked>> | 80% | 41,176 psi | 66% | 2598 fps | 99.9% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 35,810 psi | 57% | 2474 fps | 97.3% |
| Hodgdon Benchmark | <<locked>> | 90% | 41,785 psi | 67% | 2625 fps | 95.3% |
| Hodgdon BL-C2 | <<locked>> | 94% | 41,162 psi | 66% | 2720 fps | 95.2% |
| Hodgdon H322 | <<locked>> | 80% | 32,169 psi | 52% | 2484 fps | 95.5% |
| Hodgdon H335 | <<locked>> | 82% | 34,606 psi | 55% | 2546 fps | 95.2% |
| Hodgdon H4198 | <<locked>> | 80% | 41,437 psi | 66% | 2579 fps | 97.8% |
| Hodgdon H4895 | <<locked>> | 98% | 47,166 psi | 76% | 2808 fps | 95.3% |
| Hodgdon TrailBoss | <<locked>> | 80% | 23,859 psi | 38% | 1519 fps | 100% |
| IMR 3031 | <<locked>> | 86% | 30,501 psi | 49% | 2500 fps | 95.8% |
| IMR 4198 | <<locked>> | 80% | 35,027 psi | 56% | 2490 fps | 99.5% |
| IMR 4227 | <<locked>> | 80% | 47,123 psi | 76% | 2648 fps | 100% |
| IMR 8208 XBR | <<locked>> | 94% | 43,976 psi | 71% | 2713 fps | 95.2% |
| Lovex D073.4 | <<locked>> | 80% | 37,884 psi | 61% | 2602 fps | 95.3% |
| Lovex D073.5 | <<locked>> | 88% | 40,176 psi | 64% | 2644 fps | 95.3% |
| Lovex D073.6 | <<locked>> | 94% | 38,276 psi | 61% | 2661 fps | 95.8% |
| Lovex S053 | <<locked>> | 80% | 45,992 psi | 74% | 2598 fps | 100% |
| Norma 200 | <<locked>> | 80% | 37,608 psi | 60% | 2572 fps | 99.7% |
| Norma 201 | <<locked>> | 96% | 42,888 psi | 69% | 2697 fps | 95% |
| Norma 202 | <<locked>> | 90% | 35,317 psi | 57% | 2569 fps | 95.6% |
| Ramshot X-Terminator | <<locked>> | 96% | 52,431 psi | 84% | 2825 fps | 95.4% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 23,714 psi | 38% | 1552 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 80% | 46,978 psi | 75% | 2684 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 86% | 38,769 psi | 62% | 2612 fps | 95.4% |
| Rottweil R 901 | <<locked>> | 86% | 34,809 psi | 56% | 2513 fps | 95.1% |
| Rottweil R 902 | <<locked>> | 98% | 42,931 psi | 69% | 2687 fps | 95% |
| Shooters World AR Plus | <<locked>> | 80% | 37,884 psi | 61% | 2602 fps | 95.3% |
| Shooters World Match Rifle | <<locked>> | 94% | 38,276 psi | 61% | 2661 fps | 95.8% |
| Shooters World Tactical Rifle | <<locked>> | 90% | 47,529 psi | 76% | 2730 fps | 95.5% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 42,525 psi | 68% | 2395 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 35,520 psi | 57% | 2559 fps | 95.5% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 33,808 psi | 54% | 2493 fps | 97.1% |
| SNPE Vectan Tubal 3000 | <<locked>> | 88% | 36,085 psi | 58% | 2490 fps | 95.7% |
| SNPE Vectan Tubal 5000 | <<locked>> | 90% | 30,835 psi | 49% | 2388 fps | 95% |
| Somchem S321 | <<locked>> | 90% | 41,669 psi | 67% | 2694 fps | 95% |
| Somchem S335 | <<locked>> | 86% | 32,967 psi | 53% | 2444 fps | 95.7% |
| Vihtavuori N120 | <<locked>> | 80% | 39,740 psi | 64% | 2549 fps | 100% |
| Vihtavuori N130 | <<locked>> | 80% | 32,010 psi | 51% | 2408 fps | 98.1% |
| Vihtavuori N133 | <<locked>> | 80% | 27,818 psi | 45% | 2313 fps | 95.6% |
| Vihtavuori N135 | <<locked>> | 84% | 26,266 psi | 42% | 2349 fps | 95.2% |
| Vihtavuori N140 | <<locked>> | 90% | 33,489 psi | 54% | 2500 fps | 95.3% |
| Vihtavuori N530 | <<locked>> | 94% | 44,382 psi | 71% | 2713 fps | 95.4% |
| Vihtavuori N540 | <<locked>> | 94% | 36,434 psi | 58% | 2582 fps | 95.7% |
| Winchester 748 | <<locked>> | 94% | 42,293 psi | 68% | 2740 fps | 95.8% |
ᴾ possible press load - work up slowly to this load while watching for signs of excessive pressure.
This overview compares 58 powders for .300 CR loaded with the .308 | 135gr | Berger Target FB. Alliant Power Pro 1200-R delivers the highest muzzle velocity at 2,969 fps; across all powders the maximum-charge window runs from 1,699 fps to 2,969 fps. Accurate 2015 gives the best case fill at 100 %, and 58 of the 58 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (430 MPa), the top charges use 52–90 %, leaving at least 10 % headroom. The 135.0 gr projectile in 0.308" calls for a 1:14.0 twist; slower twists will usually not stabilise this weight. Accurate 2015, Accurate 2495, Accurate 2520 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. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.