Load Specifications
Load data in caliber .300 CR with .308 | 85gr | MAKER Tipped expanding bullet and 24 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 36, IMR 4227 and Shooters World Buffalo Rifle.
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.
A valid access license is required to use the Personalized Load Calculator.
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 1680 | <<locked>> | 96% | 53,330 psi | 86% | 3383 fps | 98.2% |
| Accurate 5744 | <<locked>> | 84% | 56,115 psi | 90% | 3497 fps | 99.2% |
| Accurate No. 11 FS | <<locked>> | 86% | 55,230 psi | 89% | 3419 fps | 100% |
| ADI APS 450 | <<locked>> | 82% | 54,447 psi | 87% | 2638 fps | 100% |
| ADI AR 2205 | <<locked>> | 88% | 52,866 psi | 85% | 3287 fps | 100% |
| ADI AR 2207ᴾ | <<locked>> | 100% | 49,734 psi | 80% | 3448 fps | 99.9% |
| Alliant Reloder-10xᴾ | <<locked>> | 100% | 40,741 psi | 65% | 3274 fps | 95.9% |
| Alliant Reloder-7ᴾ | <<locked>> | 100% | 52,678 psi | 84% | 3442 fps | 98.7% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 28,964 psi | 46% | 2103 fps | 100% |
| IMR 4198ᴾ | <<locked>> | 100% | 44,135 psi | 71% | 3291 fps | 97.6% |
| IMR 4227 | <<locked>> | 96% | 55,100 psi | 88% | 3438 fps | 99.8% |
| Lovex D060 | <<locked>> | 90% | 56,115 psi | 90% | 3497 fps | 99.2% |
| Lovex D063 | <<locked>> | 84% | 52,779 psi | 85% | 3409 fps | 98.9% |
| Lovex S040 | <<locked>> | 82% | 54,215 psi | 87% | 3307 fps | 100% |
| Lovex S053 | <<locked>> | 98% | 55,390 psi | 89% | 3428 fps | 100% |
| Norma 200ᴾ | <<locked>> | 100% | 46,296 psi | 74% | 3383 fps | 98% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 28,123 psi | 45% | 2142 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 96% | 54,070 psi | 87% | 3465 fps | 99.7% |
| Shooters World Blackout | <<locked>> | 84% | 52,779 psi | 85% | 3409 fps | 98.9% |
| Shooters World Buffalo Rifle | <<locked>> | 90% | 56,115 psi | 90% | 3497 fps | 99.2% |
| Shooters World SOCOM | <<locked>> | 88% | 54,505 psi | 87% | 3409 fps | 99.4% |
| SNPE Vectan BA6 1/2ᴾ | <<locked>> | 100% | 52,982 psi | 85% | 3225 fps | 100% |
| Vihtavuori N110 | <<locked>> | 92% | 55,114 psi | 88% | 3353 fps | 100% |
| Vihtavuori N120ᴾ | <<locked>> | 100% | 49,908 psi | 80% | 3396 fps | 100% |
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>> | 88% | 40,611 psi | 65% | 3133 fps | 95.6% |
| Accurate 5744 | <<locked>> | 80% | 49,182 psi | 79% | 3366 fps | 98.3% |
| Accurate No. 11 FS | <<locked>> | 80% | 45,426 psi | 73% | 3248 fps | 99.7% |
| ADI APS 450 | <<locked>> | 80% | 52,736 psi | 85% | 2608 fps | 100% |
| ADI AR 2205 | <<locked>> | 80% | 41,263 psi | 66% | 3077 fps | 99.9% |
| ADI AR 2207 | <<locked>> | 82% | 27,818 psi | 45% | 2917 fps | 95.4% |
| Alliant Reloder-10x | <<locked>> | 98% | 37,956 psi | 61% | 3209 fps | 95% |
| Alliant Reloder-7 | <<locked>> | 90% | 38,319 psi | 61% | 3146 fps | 95.7% |
| Hodgdon TrailBoss | <<locked>> | 80% | 20,827 psi | 33% | 1877 fps | 100% |
| IMR 4198 | <<locked>> | 94% | 37,144 psi | 60% | 3123 fps | 95.5% |
| IMR 4227 | 31.9 gr | 80% | 33,649 psi | 54% | 2982 fps | 96.2% |
| Lovex D060 | <<locked>> | 80% | 41,394 psi | 66% | 3196 fps | 96.6% |
| Lovex D063 | <<locked>> | 80% | 46,064 psi | 74% | 3278 fps | 97.9% |
| Lovex S040 | <<locked>> | 80% | 50,923 psi | 82% | 3255 fps | 100% |
| Lovex S053 | <<locked>> | 80% | 32,503 psi | 52% | 2963 fps | 98.8% |
| Norma 200 | <<locked>> | 92% | 35,549 psi | 57% | 3136 fps | 95.2% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 20,537 psi | 33% | 1923 fps | 100% |
| ReloadSwiss RS 36 | 33.9 gr | 80% | 32,518 psi | 52% | 2992 fps | 95.6% |
| Shooters World Blackout | <<locked>> | 80% | 46,064 psi | 74% | 3278 fps | 97.9% |
| Shooters World Buffalo Rifle | 32.5 gr | 80% | 41,394 psi | 66% | 3196 fps | 96.6% |
| Shooters World SOCOM | <<locked>> | 80% | 41,234 psi | 66% | 3153 fps | 97.4% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 30,748 psi | 49% | 2805 fps | 100% |
| Vihtavuori N110 | <<locked>> | 80% | 38,363 psi | 62% | 3058 fps | 100% |
| Vihtavuori N120 | <<locked>> | 80% | 26,281 psi | 42% | 2828 fps | 96% |
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 24 powders for .300 CR loaded with the .308 | 85gr | MAKER Tipped expanding. Accurate 5744 delivers the highest muzzle velocity at 3,497 fps; across all powders the maximum-charge window runs from 2,103 fps to 3,497 fps. ADI AR 2207 gives the best case fill at 100 %, and 24 of the 24 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (430 MPa), the top charges use 45–90 %, leaving at least 10 % headroom. ADI AR 2207, Alliant Reloder-10x, Alliant Reloder-7 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. ReloadSwiss RS 36, IMR 4227, Shooters World Buffalo Rifle rank at the top here: for .300 CR with the .308 | 85gr | MAKER Tipped expanding 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.