Load Specifications
Load data in caliber .300 CR with .310 | 125gr | Speer HP TNT bullet and 55 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Hodgdon H322, Shooters World AR Plus and Lovex D073.4.
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>> | 88% | 54,853 psi | 88% | 2890 fps | 100% |
| Accurate 2015ᴾ | <<locked>> | 100% | 51,213 psi | 82% | 2920 fps | 99.9% |
| Accurate 2460 | <<locked>> | 98% | 53,432 psi | 86% | 2976 fps | 98.5% |
| Accurate 2495ᴾ | <<locked>> | 100% | 39,131 psi | 63% | 2785 fps | 98.9% |
| Accurate 2520ᴾ | <<locked>> | 100% | 49,980 psi | 80% | 2963 fps | 97.7% |
| Accurate 4064ᴾ | <<locked>> | 100% | 36,419 psi | 58% | 2740 fps | 95.8% |
| Accurate LT-30 | <<locked>> | 94% | 55,085 psi | 88% | 2894 fps | 99.6% |
| Accurate LT-32 | <<locked>> | 94% | 55,593 psi | 89% | 2907 fps | 98.4% |
| ADI AR 2207 | <<locked>> | 92% | 54,853 psi | 88% | 2946 fps | 100% |
| ADI AR 2219 | <<locked>> | 94% | 53,243 psi | 85% | 3002 fps | 99.4% |
| ADI Benchmark 8208ᴾ | <<locked>> | 100% | 50,676 psi | 81% | 2930 fps | 95.9% |
| Alliant AR-Compᴾ | <<locked>> | 100% | 47,123 psi | 76% | 2946 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 98% | 54,027 psi | 87% | 3087 fps | 96.1% |
| Alliant Reloder-10x | <<locked>> | 98% | 55,216 psi | 89% | 3002 fps | 100% |
| Alliant Reloder-7 | <<locked>> | 90% | 53,214 psi | 85% | 2907 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 94% | 53,737 psi | 86% | 2887 fps | 99.6% |
| Hodgdon Benchmarkᴾ | <<locked>> | 100% | 53,969 psi | 87% | 2936 fps | 97.2% |
| Hodgdon BL-C2ᴾ | <<locked>> | 100% | 47,601 psi | 76% | 2940 fps | 96% |
| Hodgdon H322 | <<locked>> | 98% | 54,853 psi | 88% | 3028 fps | 99.5% |
| Hodgdon H335 | <<locked>> | 98% | 56,101 psi | 90% | 3045 fps | 99% |
| Hodgdon H4198 | <<locked>> | 90% | 54,201 psi | 87% | 2900 fps | 99.2% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 31,995 psi | 51% | 1768 fps | 100% |
| IMR 3031ᴾ | <<locked>> | 100% | 44,889 psi | 72% | 2927 fps | 99% |
| IMR 4198 | <<locked>> | 96% | 53,447 psi | 86% | 2927 fps | 100% |
| IMR 4227 | <<locked>> | 86% | 54,157 psi | 87% | 2864 fps | 100% |
| IMR 8208 XBRᴾ | <<locked>> | 100% | 50,676 psi | 81% | 2930 fps | 95.9% |
| Lovex D073.4 | <<locked>> | 92% | 54,940 psi | 88% | 3009 fps | 98.2% |
| Lovex D073.5 | <<locked>> | 98% | 53,824 psi | 86% | 2979 fps | 97.5% |
| Lovex D073.6ᴾ | <<locked>> | 100% | 44,106 psi | 71% | 2874 fps | 96.5% |
| Lovex S053 | <<locked>> | 88% | 55,753 psi | 89% | 2851 fps | 100% |
| Norma 200 | <<locked>> | 94% | 55,666 psi | 89% | 2986 fps | 100% |
| Norma 202ᴾ | <<locked>> | 100% | 45,919 psi | 74% | 2881 fps | 97.6% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 31,923 psi | 51% | 1811 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 86% | 53,795 psi | 86% | 2897 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 98% | 54,157 psi | 87% | 2992 fps | 98% |
| Rottweil R 901ᴾ | <<locked>> | 100% | 50,140 psi | 80% | 2920 fps | 98.1% |
| Shooters World AR Plus | <<locked>> | 92% | 54,940 psi | 88% | 3009 fps | 98.2% |
| Shooters World Match Rifleᴾ | <<locked>> | 100% | 44,106 psi | 71% | 2874 fps | 96.5% |
| Shooters World Tactical Rifle | <<locked>> | 96% | 56,014 psi | 90% | 2963 fps | 96.4% |
| SNPE Vectan BA6 1/2 | <<locked>> | 92% | 56,173 psi | 90% | 2694 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 94% | 53,896 psi | 86% | 3005 fps | 98.7% |
| SNPE Vectan SP 3 | <<locked>> | 98% | 56,434 psi | 90% | 3012 fps | 99.9% |
| SNPE Vectan Tubal 3000ᴾ | <<locked>> | 100% | 49,719 psi | 80% | 2844 fps | 98% |
| SNPE Vectan Tubal 5000ᴾ | <<locked>> | 100% | 39,755 psi | 64% | 2677 fps | 97% |
| Somchem S321ᴾ | <<locked>> | 100% | 55,477 psi | 89% | 3031 fps | 97.2% |
| Somchem S335ᴾ | <<locked>> | 100% | 47,776 psi | 77% | 2838 fps | 98.5% |
| Vihtavuori N110 | <<locked>> | 82% | 54,723 psi | 88% | 2749 fps | 100% |
| Vihtavuori N120 | <<locked>> | 92% | 54,897 psi | 88% | 2894 fps | 100% |
| Vihtavuori N130ᴾ | <<locked>> | 100% | 55,927 psi | 90% | 2943 fps | 100% |
| Vihtavuori N133ᴾ | <<locked>> | 100% | 48,689 psi | 78% | 2844 fps | 99.6% |
| Vihtavuori N135ᴾ | <<locked>> | 100% | 40,640 psi | 65% | 2795 fps | 99% |
| Vihtavuori N140ᴾ | <<locked>> | 100% | 43,453 psi | 70% | 2808 fps | 97.4% |
| Vihtavuori N530ᴾ | <<locked>> | 100% | 51,097 psi | 82% | 2930 fps | 96% |
| Vihtavuori N540ᴾ | <<locked>> | 100% | 41,843 psi | 67% | 2789 fps | 96.4% |
| Winchester 748ᴾ | <<locked>> | 100% | 48,965 psi | 79% | 2963 fps | 96.5% |
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 1680 | <<locked>> | 80% | 42,308 psi | 68% | 2687 fps | 99.5% |
| Accurate 2015 | <<locked>> | 82% | 29,196 psi | 47% | 2474 fps | 95.5% |
| Accurate 2460 | <<locked>> | 88% | 38,218 psi | 61% | 2703 fps | 95.3% |
| Accurate 2495 | <<locked>> | 90% | 28,036 psi | 45% | 2520 fps | 95.6% |
| Accurate 2520 | <<locked>> | 94% | 40,640 psi | 65% | 2795 fps | 95.5% |
| Accurate 4064 | <<locked>> | 98% | 34,229 psi | 55% | 2690 fps | 95% |
| Accurate LT-30 | <<locked>> | 80% | 35,984 psi | 58% | 2546 fps | 96.2% |
| Accurate LT-32 | <<locked>> | 84% | 41,118 psi | 66% | 2651 fps | 95.5% |
| ADI AR 2207 | <<locked>> | 80% | 37,898 psi | 61% | 2664 fps | 100% |
| ADI AR 2219 | <<locked>> | 82% | 35,636 psi | 57% | 2664 fps | 95.8% |
| ADI Benchmark 8208 | <<locked>> | 98% | 47,442 psi | 76% | 2874 fps | 95.1% |
| Alliant AR-Comp | <<locked>> | 80% | 25,150 psi | 40% | 2421 fps | 96.2% |
| Alliant Power Pro 1200-R | <<locked>> | 96% | 50,473 psi | 81% | 3028 fps | 95.3% |
| Alliant Reloder-10x | <<locked>> | 80% | 31,705 psi | 51% | 2552 fps | 97.6% |
| Alliant Reloder-7 | <<locked>> | 80% | 39,218 psi | 63% | 2661 fps | 99.5% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 34,258 psi | 55% | 2530 fps | 96% |
| Hodgdon Benchmark | <<locked>> | 94% | 44,962 psi | 72% | 2782 fps | 95.2% |
| Hodgdon BL-C2 | <<locked>> | 98% | 44,541 psi | 71% | 2887 fps | 95.2% |
| Hodgdon H322 | 36.6 gr | 84% | 34,577 psi | 55% | 2638 fps | 95.4% |
| Hodgdon H335 | <<locked>> | 86% | 37,405 psi | 60% | 2707 fps | 95.2% |
| Hodgdon H4198 | <<locked>> | 80% | 39,653 psi | 64% | 2641 fps | 96.6% |
| Hodgdon TrailBoss | <<locked>> | 80% | 23,670 psi | 38% | 1585 fps | 100% |
| IMR 3031 | <<locked>> | 90% | 32,880 psi | 53% | 2657 fps | 95.8% |
| IMR 4198 | <<locked>> | 80% | 33,475 psi | 54% | 2552 fps | 98.8% |
| IMR 4227 | <<locked>> | 80% | 45,208 psi | 72% | 2726 fps | 100% |
| IMR 8208 XBR | <<locked>> | 98% | 47,442 psi | 76% | 2874 fps | 95.1% |
| Lovex D073.4 | 39.3 gr | 84% | 41,147 psi | 66% | 2769 fps | 95.4% |
| Lovex D073.5 | <<locked>> | 92% | 43,613 psi | 70% | 2808 fps | 95.3% |
| Lovex D073.6 | <<locked>> | 98% | 41,104 psi | 66% | 2818 fps | 95.7% |
| Lovex S053 | <<locked>> | 80% | 44,150 psi | 71% | 2677 fps | 100% |
| Norma 200 | <<locked>> | 80% | 35,824 psi | 57% | 2635 fps | 99.2% |
| Norma 202 | <<locked>> | 94% | 37,913 psi | 61% | 2720 fps | 95.5% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 23,482 psi | 38% | 1621 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 80% | 44,831 psi | 72% | 2756 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 90% | 42,018 psi | 67% | 2779 fps | 95.4% |
| Rottweil R 901 | <<locked>> | 92% | 39,610 psi | 64% | 2720 fps | 95.7% |
| Shooters World AR Plus | 39.3 gr | 84% | 41,147 psi | 66% | 2769 fps | 95.4% |
| Shooters World Match Rifle | <<locked>> | 98% | 41,104 psi | 66% | 2818 fps | 95.7% |
| Shooters World Tactical Rifle | <<locked>> | 94% | 52,011 psi | 83% | 2900 fps | 95.6% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 41,031 psi | 66% | 2480 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 84% | 38,435 psi | 62% | 2723 fps | 95.5% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 32,068 psi | 51% | 2549 fps | 95.6% |
| SNPE Vectan Tubal 3000 | <<locked>> | 92% | 38,841 psi | 62% | 2641 fps | 95.6% |
| SNPE Vectan Tubal 5000 | <<locked>> | 96% | 35,085 psi | 56% | 2579 fps | 95.6% |
| Somchem S321 | <<locked>> | 94% | 45,194 psi | 72% | 2858 fps | 95% |
| Somchem S335 | <<locked>> | 90% | 35,476 psi | 57% | 2595 fps | 95.7% |
| Vihtavuori N110 | <<locked>> | 80% | 51,445 psi | 82% | 2707 fps | 100% |
| Vihtavuori N120 | <<locked>> | 80% | 38,072 psi | 61% | 2628 fps | 100% |
| Vihtavuori N130 | <<locked>> | 80% | 30,414 psi | 49% | 2461 fps | 96.9% |
| Vihtavuori N133 | <<locked>> | 84% | 29,965 psi | 48% | 2461 fps | 95.5% |
| Vihtavuori N135 | <<locked>> | 88% | 27,920 psi | 45% | 2487 fps | 95% |
| Vihtavuori N140 | <<locked>> | 94% | 35,955 psi | 58% | 2651 fps | 95.2% |
| Vihtavuori N530 | <<locked>> | 98% | 48,095 psi | 77% | 2877 fps | 95.3% |
| Vihtavuori N540 | <<locked>> | 98% | 39,262 psi | 63% | 2736 fps | 95.7% |
| Winchester 748 | <<locked>> | 98% | 45,905 psi | 74% | 2907 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 55 powders for .300 CR loaded with the .310 | 125gr | Speer HP TNT. Alliant Power Pro 1200-R delivers the highest muzzle velocity at 3,087 fps; across all powders the maximum-charge window runs from 1,768 fps to 3,087 fps. Accurate 2015 gives the best case fill at 100 %, and 55 of the 55 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (430 MPa), the top charges use 51–90 %, leaving at least 10 % headroom. 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. Hodgdon H322, Shooters World AR Plus, Lovex D073.4 rank at the top here: for .300 CR with the .310 | 125gr | Speer HP TNT 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.