Load Specifications
Load data in caliber 5.6 x 50 Mag. with .223 | 40gr | Speer SSSP bullet and 23 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Reloder-10x, Norma 200 and SNPE Vectan SP 3.
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: 23.62"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 1680 | <<locked>> | 86% | 46,949 psi | 85% | 3455 fps | 98.4% |
| Accurate 2015ᴾ | <<locked>> | 100% | 45,672 psi | 83% | 3504 fps | 97.3% |
| Accurate LT-30 | <<locked>> | 92% | 47,645 psi | 86% | 3455 fps | 96.1% |
| ADI AR 2207 | <<locked>> | 92% | 49,066 psi | 89% | 3606 fps | 100% |
| ADI AR 2219 | <<locked>> | 94% | 48,428 psi | 88% | 3606 fps | 96.1% |
| Alliant AR-Compᴾ | <<locked>> | 100% | 42,656 psi | 77% | 3540 fps | 98.9% |
| Alliant Reloder-10x | <<locked>> | 98% | 49,574 psi | 90% | 3632 fps | 98.9% |
| Alliant Reloder-7 | <<locked>> | 90% | 48,153 psi | 87% | 3540 fps | 99% |
| Baschieri & Pellagri 106 | <<locked>> | 94% | 49,647 psi | 90% | 3481 fps | 97.1% |
| Hodgdon H322 | <<locked>> | 98% | 49,617 psi | 90% | 3629 fps | 96.3% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 30,690 psi | 56% | 2352 fps | 100% |
| IMR 4198 | <<locked>> | 96% | 48,138 psi | 87% | 3566 fps | 99.3% |
| IMR 4227 | <<locked>> | 86% | 49,211 psi | 89% | 3537 fps | 99.9% |
| Lovex S053 | <<locked>> | 86% | 47,514 psi | 86% | 3484 fps | 100% |
| Norma 200 | <<locked>> | 92% | 46,833 psi | 85% | 3560 fps | 99% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 30,371 psi | 55% | 2402 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 86% | 48,675 psi | 88% | 3556 fps | 99.8% |
| SNPE Vectan BA6 1/2 | <<locked>> | 90% | 48,776 psi | 89% | 3340 fps | 100% |
| SNPE Vectan SP 3 | <<locked>> | 96% | 47,398 psi | 86% | 3566 fps | 96.8% |
| Vihtavuori N110 | <<locked>> | 82% | 49,313 psi | 89% | 3455 fps | 100% |
| Vihtavuori N120 | <<locked>> | 92% | 49,095 psi | 89% | 3550 fps | 100% |
| Vihtavuori N130 | <<locked>> | 98% | 47,906 psi | 87% | 3514 fps | 98.4% |
| Vihtavuori N133ᴾ | <<locked>> | 100% | 43,918 psi | 80% | 3422 fps | 96.7% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 23.62"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 1680 | <<locked>> | 80% | 38,377 psi | 70% | 3261 fps | 96.3% |
| Accurate 2015 | <<locked>> | 94% | 37,840 psi | 69% | 3327 fps | 95% |
| Accurate LT-30 | <<locked>> | 90% | 44,614 psi | 81% | 3392 fps | 95.3% |
| ADI AR 2207 | <<locked>> | 80% | 33,127 psi | 60% | 3241 fps | 98.3% |
| ADI AR 2219 | <<locked>> | 92% | 45,252 psi | 82% | 3537 fps | 95.2% |
| Alliant AR-Comp | <<locked>> | 92% | 32,750 psi | 59% | 3268 fps | 95.7% |
| Alliant Reloder-10x | 24.3 gr | 88% | 35,737 psi | 65% | 3314 fps | 95.6% |
| Alliant Reloder-7 | <<locked>> | 80% | 35,027 psi | 64% | 3235 fps | 95.8% |
| Baschieri & Pellagri 106 | <<locked>> | 90% | 43,265 psi | 79% | 3350 fps | 95.4% |
| Hodgdon H322 | <<locked>> | 96% | 46,253 psi | 84% | 3556 fps | 95.5% |
| Hodgdon TrailBoss | <<locked>> | 80% | 22,336 psi | 41% | 2113 fps | 100% |
| IMR 4198 | <<locked>> | 84% | 33,852 psi | 61% | 3219 fps | 95.7% |
| IMR 4227 | <<locked>> | 80% | 40,799 psi | 74% | 3360 fps | 98.9% |
| Lovex S053 | <<locked>> | 80% | 39,552 psi | 72% | 3320 fps | 100% |
| Norma 200 | 23.5 gr | 82% | 33,504 psi | 61% | 3235 fps | 95.6% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 22,234 psi | 40% | 2165 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 80% | 40,132 psi | 73% | 3373 fps | 98.7% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 36,622 psi | 66% | 3117 fps | 100% |
| SNPE Vectan SP 3 | 25.5 gr | 92% | 41,742 psi | 76% | 3442 fps | 95.2% |
| Vihtavuori N110 | <<locked>> | 80% | 46,441 psi | 84% | 3406 fps | 100% |
| Vihtavuori N120 | <<locked>> | 80% | 33,315 psi | 60% | 3212 fps | 99.2% |
| Vihtavuori N130 | <<locked>> | 90% | 37,333 psi | 68% | 3278 fps | 95.8% |
| Vihtavuori N133 | <<locked>> | 96% | 38,783 psi | 70% | 3304 fps | 95.1% |
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 23 powders for 5.6 x 50 Mag. loaded with the .223 | 40gr | Speer SSSP. Alliant Reloder-10x delivers the highest muzzle velocity at 3,632 fps; across all powders the maximum-charge window runs from 2,352 fps to 3,632 fps. Accurate 2015 gives the best case fill at 100 %, and 23 of the 23 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (380 MPa), the top charges use 55–90 %, leaving at least 10 % headroom. Accurate 2015, Alliant AR-Comp, Hodgdon TrailBoss 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. Alliant Reloder-10x, Norma 200, SNPE Vectan SP 3 rank at the top here: for 5.6 x 50 Mag. with the .223 | 40gr | Speer SSSP 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.