Load Specifications
Load data in caliber .300 CR with .308 | 120gr | Barnes TAC-TX BT bullet and 40 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>> | 92% | 55,579 psi | 89% | 2920 fps | 100% |
| Accurate 2015ᴾ | <<locked>> | 100% | 43,801 psi | 70% | 2825 fps | 98.6% |
| Accurate 2460ᴾ | <<locked>> | 100% | 48,950 psi | 78% | 2927 fps | 96.8% |
| Accurate 2495ᴾ | <<locked>> | 100% | 31,662 psi | 51% | 2654 fps | 96% |
| Accurate LT-30 | <<locked>> | 98% | 55,840 psi | 90% | 2920 fps | 99% |
| Accurate LT-32 | <<locked>> | 98% | 56,420 psi | 90% | 2927 fps | 97.6% |
| ADI APS 450 | <<locked>> | 82% | 56,376 psi | 90% | 2218 fps | 100% |
| ADI AR 2205 | <<locked>> | 84% | 54,462 psi | 87% | 2785 fps | 100% |
| ADI AR 2207 | <<locked>> | 96% | 54,186 psi | 87% | 2969 fps | 100% |
| ADI AR 2219 | <<locked>> | 98% | 53,272 psi | 85% | 3022 fps | 98.7% |
| Alliant AR-Compᴾ | <<locked>> | 100% | 40,495 psi | 65% | 2851 fps | 99.7% |
| Alliant Reloder-10xᴾ | <<locked>> | 100% | 51,010 psi | 82% | 2969 fps | 99.9% |
| Alliant Reloder-7 | <<locked>> | 94% | 53,185 psi | 85% | 2933 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 98% | 54,114 psi | 87% | 2910 fps | 99.1% |
| Hodgdon H322ᴾ | <<locked>> | 100% | 50,763 psi | 81% | 2982 fps | 98.3% |
| Hodgdon H335ᴾ | <<locked>> | 100% | 52,098 psi | 84% | 3002 fps | 97.6% |
| Hodgdon H4198 | <<locked>> | 94% | 54,563 psi | 87% | 2923 fps | 98.5% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 30,937 psi | 50% | 1762 fps | 100% |
| IMR 3031ᴾ | <<locked>> | 100% | 38,566 psi | 62% | 2815 fps | 96.5% |
| IMR 4198ᴾ | <<locked>> | 100% | 53,301 psi | 85% | 2953 fps | 100% |
| IMR 4227 | <<locked>> | 90% | 54,708 psi | 88% | 2900 fps | 100% |
| Lovex D060 | <<locked>> | 84% | 54,984 psi | 88% | 2946 fps | 100% |
| Lovex D073.4 | <<locked>> | 96% | 54,201 psi | 87% | 3015 fps | 97.1% |
| Lovex S053 | <<locked>> | 92% | 55,956 psi | 90% | 2887 fps | 100% |
| Norma 200 | <<locked>> | 98% | 54,375 psi | 87% | 3002 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 30,371 psi | 49% | 1798 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 90% | 54,201 psi | 87% | 2933 fps | 100% |
| ReloadSwiss RS 40ᴾ | <<locked>> | 100% | 50,705 psi | 81% | 2953 fps | 96.3% |
| Shooters World AR Plus | <<locked>> | 96% | 54,201 psi | 87% | 3015 fps | 97.1% |
| Shooters World Buffalo Rifle | <<locked>> | 84% | 54,984 psi | 88% | 2946 fps | 100% |
| Shooters World SOCOM | <<locked>> | 82% | 52,547 psi | 84% | 2864 fps | 100% |
| SNPE Vectan BA6 1/2 | <<locked>> | 94% | 53,505 psi | 86% | 2694 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 98% | 53,534 psi | 86% | 3018 fps | 97.8% |
| SNPE Vectan SP 3ᴾ | <<locked>> | 100% | 52,533 psi | 84% | 2976 fps | 99.2% |
| Somchem S335ᴾ | <<locked>> | 100% | 41,510 psi | 67% | 2743 fps | 96.3% |
| Vihtavuori N110 | <<locked>> | 86% | 55,201 psi | 89% | 2792 fps | 100% |
| Vihtavuori N120 | <<locked>> | 96% | 54,244 psi | 87% | 2920 fps | 100% |
| Vihtavuori N130ᴾ | <<locked>> | 100% | 49,139 psi | 79% | 2867 fps | 99.7% |
| Vihtavuori N133ᴾ | <<locked>> | 100% | 42,540 psi | 68% | 2762 fps | 98.2% |
| Vihtavuori N135ᴾ | <<locked>> | 100% | 34,621 psi | 56% | 2690 fps | 96.6% |
Start Load - Barrel Length: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 1680 | <<locked>> | 80% | 37,376 psi | 60% | 2608 fps | 98.1% |
| Accurate 2015 | <<locked>> | 90% | 31,691 psi | 51% | 2569 fps | 95.4% |
| Accurate 2460 | <<locked>> | 96% | 42,482 psi | 68% | 2812 fps | 95.3% |
| Accurate 2495 | <<locked>> | 98% | 29,428 psi | 47% | 2598 fps | 95.1% |
| Accurate LT-30 | <<locked>> | 84% | 36,187 psi | 58% | 2569 fps | 95.1% |
| Accurate LT-32 | <<locked>> | 90% | 44,280 psi | 71% | 2726 fps | 95.1% |
| ADI APS 450 | <<locked>> | 80% | 54,085 psi | 87% | 2185 fps | 100% |
| ADI AR 2205 | <<locked>> | 80% | 48,370 psi | 78% | 2700 fps | 100% |
| ADI AR 2207 | <<locked>> | 80% | 32,576 psi | 52% | 2585 fps | 99.6% |
| ADI AR 2219 | <<locked>> | 88% | 37,942 psi | 61% | 2736 fps | 95.3% |
| Alliant AR-Comp | <<locked>> | 86% | 26,165 psi | 42% | 2474 fps | 95.3% |
| Alliant Reloder-10x | <<locked>> | 82% | 28,776 psi | 46% | 2507 fps | 95.5% |
| Alliant Reloder-7 | <<locked>> | 80% | 34,185 psi | 55% | 2582 fps | 97.9% |
| Baschieri & Pellagri 106 | <<locked>> | 86% | 36,419 psi | 58% | 2598 fps | 95.5% |
| Hodgdon H322 | <<locked>> | 92% | 39,146 psi | 63% | 2762 fps | 95.7% |
| Hodgdon H335 | <<locked>> | 94% | 42,366 psi | 68% | 2828 fps | 95.5% |
| Hodgdon H4198 | <<locked>> | 84% | 40,074 psi | 64% | 2664 fps | 95.6% |
| Hodgdon TrailBoss | <<locked>> | 80% | 22,408 psi | 36% | 1568 fps | 100% |
| IMR 3031 | <<locked>> | 98% | 36,187 psi | 58% | 2756 fps | 95.7% |
| IMR 4198 | <<locked>> | 80% | 29,631 psi | 48% | 2474 fps | 96.7% |
| IMR 4227 | <<locked>> | 80% | 40,335 psi | 65% | 2661 fps | 99.9% |
| Lovex D060 | <<locked>> | 80% | 48,443 psi | 78% | 2841 fps | 99.9% |
| Lovex D073.4 | <<locked>> | 92% | 46,934 psi | 75% | 2897 fps | 95.6% |
| Lovex S053 | <<locked>> | 80% | 39,363 psi | 63% | 2628 fps | 100% |
| Norma 200 | <<locked>> | 80% | 30,472 psi | 49% | 2543 fps | 97.1% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 22,089 psi | 35% | 1604 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 80% | 39,711 psi | 64% | 2690 fps | 99.8% |
| ReloadSwiss RS 40 | <<locked>> | 98% | 47,152 psi | 76% | 2890 fps | 95.5% |
| Shooters World AR Plus | <<locked>> | 92% | 46,934 psi | 75% | 2897 fps | 95.6% |
| Shooters World Buffalo Rifle | <<locked>> | 80% | 48,443 psi | 78% | 2841 fps | 99.9% |
| Shooters World SOCOM | <<locked>> | 80% | 49,284 psi | 79% | 2812 fps | 100% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 36,622 psi | 59% | 2441 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 92% | 43,540 psi | 70% | 2848 fps | 95.8% |
| SNPE Vectan SP 3 | <<locked>> | 86% | 33,794 psi | 54% | 2615 fps | 95% |
| Somchem S335 | <<locked>> | 98% | 38,957 psi | 62% | 2694 fps | 95.6% |
| Vihtavuori N110 | <<locked>> | 80% | 46,209 psi | 74% | 2667 fps | 100% |
| Vihtavuori N120 | <<locked>> | 80% | 32,808 psi | 53% | 2552 fps | 100% |
| Vihtavuori N130 | <<locked>> | 84% | 29,776 psi | 48% | 2474 fps | 95.6% |
| Vihtavuori N133 | <<locked>> | 92% | 33,199 psi | 53% | 2562 fps | 95.6% |
| Vihtavuori N135 | <<locked>> | 98% | 32,445 psi | 52% | 2635 fps | 95.8% |
ᴾ possible press load - work up slowly to this load while watching for signs of excessive pressure.
This overview compares 40 powders for .300 CR loaded with the .308 | 120gr | Barnes TAC-TX BT. ADI AR 2219 delivers the highest muzzle velocity at 3,022 fps; across all powders the maximum-charge window runs from 1,762 fps to 3,022 fps. Accurate 2015 gives the best case fill at 100 %, and 40 of the 40 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (430 MPa), the top charges use 49–90 %, leaving at least 10 % headroom. The 120.0 gr projectile in 0.308" calls for a 1:11.0 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. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.