Load Specifications
Load data in caliber .300 CR with .308 | 115gr | Lehigh Defense Controlled Chaos bullet and 43 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are SNPE Vectan SP 10, ADI AR 2219 and Norma 200.
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>> | 90% | 55,245 psi | 89% | 3005 fps | 100% |
| Accurate 2015ᴾ | <<locked>> | 100% | 47,152 psi | 76% | 2966 fps | 99.1% |
| Accurate 2460ᴾ | <<locked>> | 100% | 52,968 psi | 85% | 3074 fps | 97.6% |
| Accurate 2495ᴾ | <<locked>> | 100% | 35,389 psi | 57% | 2808 fps | 97.2% |
| Accurate LT-30 | <<locked>> | 96% | 55,114 psi | 88% | 2999 fps | 99% |
| Accurate LT-32 | <<locked>> | 96% | 55,622 psi | 89% | 3009 fps | 97.6% |
| ADI AR 2205 | <<locked>> | 82% | 53,403 psi | 86% | 2861 fps | 100% |
| ADI AR 2207 | <<locked>> | 94% | 54,056 psi | 87% | 3058 fps | 100% |
| ADI AR 2219 | <<locked>> | 98% | 56,391 psi | 90% | 3159 fps | 99.1% |
| Alliant AR-Compᴾ | <<locked>> | 100% | 43,671 psi | 70% | 2995 fps | 99.9% |
| Alliant Reloder-10xᴾ | <<locked>> | 100% | 54,578 psi | 88% | 3110 fps | 100% |
| Alliant Reloder-7 | <<locked>> | 92% | 52,895 psi | 85% | 3018 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 96% | 53,751 psi | 86% | 2992 fps | 99.1% |
| Hodgdon H322ᴾ | <<locked>> | 100% | 54,346 psi | 87% | 3130 fps | 98.9% |
| Hodgdon H335ᴾ | <<locked>> | 100% | 55,825 psi | 90% | 3150 fps | 98.3% |
| Hodgdon H4198 | <<locked>> | 92% | 54,244 psi | 87% | 3009 fps | 98.5% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 31,604 psi | 51% | 1841 fps | 100% |
| IMR 3031ᴾ | <<locked>> | 100% | 41,669 psi | 67% | 2963 fps | 97.5% |
| IMR 4198ᴾ | <<locked>> | 100% | 55,985 psi | 90% | 3081 fps | 100% |
| IMR 4227 | <<locked>> | 88% | 53,969 psi | 87% | 2979 fps | 100% |
| Lovex D060 | <<locked>> | 82% | 54,012 psi | 87% | 3025 fps | 100% |
| Lovex D063 | <<locked>> | 82% | 55,042 psi | 88% | 2989 fps | 100% |
| Lovex D073.4 | <<locked>> | 94% | 54,128 psi | 87% | 3104 fps | 97.2% |
| Lovex D073.5ᴾ | <<locked>> | 100% | 53,330 psi | 86% | 3074 fps | 96.4% |
| Lovex S053 | <<locked>> | 90% | 55,390 psi | 89% | 2969 fps | 100% |
| Norma 200 | <<locked>> | 96% | 54,940 psi | 88% | 3094 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 31,125 psi | 50% | 1877 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 88% | 54,027 psi | 87% | 3018 fps | 100% |
| ReloadSwiss RS 40ᴾ | <<locked>> | 100% | 54,041 psi | 87% | 3094 fps | 97% |
| Rottweil R 901ᴾ | <<locked>> | 100% | 46,354 psi | 74% | 2956 fps | 96.4% |
| Shooters World AR Plus | <<locked>> | 94% | 54,128 psi | 87% | 3104 fps | 97.2% |
| Shooters World Buffalo Rifle | <<locked>> | 82% | 54,012 psi | 87% | 3025 fps | 100% |
| Shooters World SOCOM | <<locked>> | 82% | 55,042 psi | 88% | 2989 fps | 100% |
| SNPE Vectan BA6 1/2 | <<locked>> | 94% | 56,130 psi | 90% | 2808 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 96% | 53,171 psi | 85% | 3104 fps | 97.9% |
| SNPE Vectan SP 3ᴾ | <<locked>> | 100% | 45,426 psi | 73% | 2897 fps | 98.7% |
| SNPE Vectan Tubal 3000ᴾ | <<locked>> | 100% | 46,514 psi | 75% | 2887 fps | 96.4% |
| Somchem S335ᴾ | <<locked>> | 100% | 44,614 psi | 72% | 2884 fps | 97.1% |
| Vihtavuori N110 | <<locked>> | 84% | 54,665 psi | 88% | 2871 fps | 100% |
| Vihtavuori N120 | <<locked>> | 94% | 54,085 psi | 87% | 3002 fps | 100% |
| Vihtavuori N130ᴾ | <<locked>> | 100% | 52,359 psi | 84% | 3005 fps | 99.9% |
| Vihtavuori N133ᴾ | <<locked>> | 100% | 45,426 psi | 73% | 2897 fps | 98.7% |
| Vihtavuori N135ᴾ | <<locked>> | 100% | 37,463 psi | 60% | 2831 fps | 97.5% |
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% | 39,523 psi | 63% | 2733 fps | 98.6% |
| Accurate 2015 | <<locked>> | 88% | 32,314 psi | 52% | 2651 fps | 95.6% |
| Accurate 2460 | <<locked>> | 94% | 43,192 psi | 69% | 2904 fps | 95.6% |
| Accurate 2495 | <<locked>> | 96% | 30,893 psi | 50% | 2700 fps | 95.6% |
| Accurate LT-30 | <<locked>> | 82% | 36,187 psi | 58% | 2644 fps | 95.1% |
| Accurate LT-32 | <<locked>> | 88% | 43,874 psi | 70% | 2805 fps | 95.1% |
| ADI AR 2205 | <<locked>> | 80% | 50,415 psi | 81% | 2815 fps | 100% |
| ADI AR 2207 | <<locked>> | 80% | 34,983 psi | 56% | 2713 fps | 99.9% |
| ADI AR 2219 | 38.6 gr | 86% | 37,710 psi | 60% | 2808 fps | 95.3% |
| Alliant AR-Comp | <<locked>> | 84% | 26,556 psi | 43% | 2552 fps | 95.6% |
| Alliant Reloder-10x | <<locked>> | 80% | 29,153 psi | 47% | 2582 fps | 95.6% |
| Alliant Reloder-7 | <<locked>> | 80% | 36,709 psi | 59% | 2713 fps | 98.5% |
| Baschieri & Pellagri 106 | <<locked>> | 84% | 36,376 psi | 58% | 2671 fps | 95.6% |
| Hodgdon H322 | <<locked>> | 88% | 36,869 psi | 59% | 2789 fps | 95% |
| Hodgdon H335 | <<locked>> | 92% | 42,612 psi | 68% | 2917 fps | 95.6% |
| Hodgdon H4198 | <<locked>> | 82% | 39,958 psi | 64% | 2743 fps | 95.6% |
| Hodgdon TrailBoss | <<locked>> | 80% | 23,047 psi | 37% | 1640 fps | 100% |
| IMR 3031 | <<locked>> | 94% | 34,316 psi | 55% | 2789 fps | 95% |
| IMR 4198 | <<locked>> | 80% | 31,459 psi | 50% | 2595 fps | 97.4% |
| IMR 4227 | <<locked>> | 80% | 42,670 psi | 68% | 2789 fps | 100% |
| Lovex D060 | <<locked>> | 80% | 50,546 psi | 81% | 2966 fps | 100% |
| Lovex D063 | <<locked>> | 80% | 51,532 psi | 83% | 2936 fps | 100% |
| Lovex D073.4 | <<locked>> | 90% | 47,123 psi | 76% | 2986 fps | 95.8% |
| Lovex D073.5 | <<locked>> | 98% | 49,850 psi | 80% | 3018 fps | 95.7% |
| Lovex S053 | <<locked>> | 80% | 41,597 psi | 67% | 2749 fps | 100% |
| Norma 200 | 34.1 gr | 80% | 33,228 psi | 53% | 2677 fps | 97.9% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 23,061 psi | 37% | 1683 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 80% | 42,134 psi | 68% | 2818 fps | 99.9% |
| ReloadSwiss RS 40 | <<locked>> | 96% | 47,326 psi | 76% | 2979 fps | 95.6% |
| Rottweil R 901 | <<locked>> | 96% | 41,307 psi | 66% | 2854 fps | 95.1% |
| Shooters World AR Plus | <<locked>> | 90% | 47,123 psi | 76% | 2986 fps | 95.8% |
| Shooters World Buffalo Rifle | <<locked>> | 80% | 50,546 psi | 81% | 2966 fps | 100% |
| Shooters World SOCOM | <<locked>> | 80% | 51,532 psi | 83% | 2936 fps | 100% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 38,827 psi | 62% | 2552 fps | 100% |
| SNPE Vectan SP 10 | 40.9 gr | 88% | 40,698 psi | 65% | 2871 fps | 95% |
| SNPE Vectan SP 3 | <<locked>> | 90% | 33,359 psi | 53% | 2641 fps | 95.7% |
| SNPE Vectan Tubal 3000 | <<locked>> | 96% | 40,930 psi | 66% | 2782 fps | 95% |
| Somchem S335 | <<locked>> | 94% | 36,999 psi | 59% | 2726 fps | 95% |
| Vihtavuori N110 | <<locked>> | 80% | 48,646 psi | 78% | 2785 fps | 100% |
| Vihtavuori N120 | <<locked>> | 80% | 35,157 psi | 56% | 2680 fps | 100% |
| Vihtavuori N130 | <<locked>> | 82% | 30,095 psi | 48% | 2549 fps | 95.7% |
| Vihtavuori N133 | <<locked>> | 90% | 33,359 psi | 53% | 2641 fps | 95.7% |
| Vihtavuori N135 | <<locked>> | 94% | 31,067 psi | 50% | 2671 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 71 powders for .300 CR loaded with the .308 | 115gr | Lehigh Defense Controlled Chaos. Alliant Power Pro 1200-R delivers the highest muzzle velocity at 3,179 fps; across all powders the maximum-charge window runs from 1,841 fps to 3,179 fps. Accurate 2015 gives the best case fill at 100 %, and 71 of the 71 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (430 MPa), the top charges use 50–90 %, leaving at least 10 % headroom. The 115.0 gr projectile in 0.308" calls for a 1:13.0 twist; slower twists will usually not stabilise this weight. Accurate 2015, Accurate 2460, Accurate 2495 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. SNPE Vectan SP 10, ADI AR 2219, Norma 200 rank at the top here: for .300 CR with the .308 | 115gr | Lehigh Defense Controlled Chaos they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate 2200, Accurate 2230, Accurate 4064 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.