Load Specifications
Load data in caliber 6 mm B.R. Rem. with .243 | 50gr | Impala LWHV LS bullet and 28 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ADI AR 2207, Norma 200 and ReloadSwiss RS 36.
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% | 49,864 psi | 85% | 3497 fps | 98.5% |
| Accurate 2015ᴾ | <<locked>> | 100% | 46,079 psi | 78% | 3507 fps | 96.9% |
| Accurate LT-30 | <<locked>> | 96% | 53,084 psi | 90% | 3543 fps | 96.8% |
| ADI AR 2205 | <<locked>> | 82% | 52,054 psi | 89% | 3448 fps | 100% |
| ADI AR 2207 | <<locked>> | 94% | 51,663 psi | 88% | 3642 fps | 100% |
| ADI AR 2219 | <<locked>> | 96% | 50,879 psi | 87% | 3645 fps | 96% |
| Alliant AR-Compᴾ | <<locked>> | 100% | 42,235 psi | 72% | 3520 fps | 98.4% |
| Alliant Reloder-10xᴾ | <<locked>> | 100% | 52,127 psi | 89% | 3675 fps | 99% |
| Alliant Reloder-7 | <<locked>> | 92% | 51,314 psi | 87% | 3586 fps | 99.1% |
| Baschieri & Pellagri 106 | <<locked>> | 96% | 51,663 psi | 88% | 3517 fps | 96.9% |
| Hodgdon H322ᴾ | <<locked>> | 100% | 51,866 psi | 88% | 3668 fps | 96.3% |
| Hodgdon H4198 | <<locked>> | 92% | 52,141 psi | 89% | 3553 fps | 95.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 31,328 psi | 53% | 2287 fps | 100% |
| IMR 4198 | <<locked>> | 98% | 50,937 psi | 87% | 3609 fps | 99.4% |
| IMR 4227 | <<locked>> | 88% | 52,083 psi | 89% | 3563 fps | 99.9% |
| Lovex D060 | <<locked>> | 82% | 51,576 psi | 88% | 3606 fps | 99.2% |
| Lovex S053 | <<locked>> | 88% | 50,821 psi | 87% | 3520 fps | 100% |
| Norma 200 | <<locked>> | 94% | 50,473 psi | 86% | 3615 fps | 99.2% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 31,125 psi | 53% | 2336 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 88% | 51,663 psi | 88% | 3593 fps | 99.9% |
| Shooters World Buffalo Rifle | <<locked>> | 82% | 51,576 psi | 88% | 3606 fps | 99.2% |
| Shooters World SOCOM | <<locked>> | 82% | 53,055 psi | 90% | 3563 fps | 99.7% |
| SNPE Vectan BA6 1/2 | <<locked>> | 92% | 51,605 psi | 88% | 3356 fps | 100% |
| SNPE Vectan SP 3ᴾ | <<locked>> | 100% | 53,084 psi | 90% | 3671 fps | 97.5% |
| Vihtavuori N110 | <<locked>> | 84% | 52,779 psi | 90% | 3474 fps | 100% |
| Vihtavuori N120 | <<locked>> | 94% | 51,721 psi | 88% | 3586 fps | 100% |
| Vihtavuori N130ᴾ | <<locked>> | 100% | 50,415 psi | 86% | 3550 fps | 98.5% |
| Vihtavuori N133ᴾ | <<locked>> | 100% | 43,772 psi | 75% | 3409 fps | 96.1% |
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% | 38,682 psi | 66% | 3245 fps | 96% |
| Accurate 2015 | <<locked>> | 96% | 40,538 psi | 69% | 3376 fps | 95.4% |
| Accurate LT-30 | <<locked>> | 92% | 47,369 psi | 81% | 3428 fps | 95.5% |
| ADI AR 2205 | <<locked>> | 80% | 49,095 psi | 84% | 3392 fps | 100% |
| ADI AR 2207 | 24 gr | 80% | 34,113 psi | 58% | 3238 fps | 98.3% |
| ADI AR 2219 | <<locked>> | 94% | 47,529 psi | 81% | 3576 fps | 95.2% |
| Alliant AR-Comp | <<locked>> | 92% | 33,301 psi | 57% | 3261 fps | 95.3% |
| Alliant Reloder-10x | <<locked>> | 88% | 36,680 psi | 62% | 3317 fps | 95.5% |
| Alliant Reloder-7 | <<locked>> | 80% | 36,172 psi | 62% | 3228 fps | 95.8% |
| Baschieri & Pellagri 106 | <<locked>> | 92% | 45,513 psi | 77% | 3392 fps | 95.5% |
| Hodgdon H322 | <<locked>> | 98% | 48,950 psi | 83% | 3606 fps | 95.5% |
| Hodgdon H4198 | <<locked>> | 90% | 49,269 psi | 84% | 3494 fps | 95.2% |
| Hodgdon TrailBoss | <<locked>> | 80% | 23,453 psi | 40% | 2060 fps | 100% |
| IMR 4198 | <<locked>> | 84% | 34,461 psi | 59% | 3202 fps | 95.6% |
| IMR 4227 | <<locked>> | 80% | 40,973 psi | 70% | 3327 fps | 98.8% |
| Lovex D060 | <<locked>> | 80% | 48,718 psi | 83% | 3543 fps | 98.9% |
| Lovex S053 | <<locked>> | 80% | 40,727 psi | 69% | 3314 fps | 100% |
| Norma 200 | 25.2 gr | 80% | 33,301 psi | 57% | 3196 fps | 95.1% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 23,076 psi | 39% | 2100 fps | 100% |
| ReloadSwiss RS 36 | 25 gr | 80% | 40,640 psi | 69% | 3356 fps | 98.6% |
| Shooters World Buffalo Rifle | <<locked>> | 80% | 48,718 psi | 83% | 3543 fps | 98.9% |
| Shooters World SOCOM | <<locked>> | 80% | 49,574 psi | 84% | 3497 fps | 99.4% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 37,826 psi | 64% | 3097 fps | 100% |
| SNPE Vectan SP 3 | <<locked>> | 94% | 44,512 psi | 76% | 3488 fps | 95.5% |
| Vihtavuori N110 | <<locked>> | 80% | 47,108 psi | 80% | 3376 fps | 100% |
| Vihtavuori N120 | <<locked>> | 80% | 34,200 psi | 58% | 3202 fps | 99.2% |
| Vihtavuori N130 | <<locked>> | 90% | 37,782 psi | 64% | 3264 fps | 95.5% |
| Vihtavuori N133 | <<locked>> | 98% | 41,350 psi | 70% | 3353 fps | 95.4% |
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 28 powders for 6 mm B.R. Rem. loaded with the .243 | 50gr | Impala LWHV LS. Alliant Reloder-10x delivers the highest muzzle velocity at 3,675 fps; across all powders the maximum-charge window runs from 2,287 fps to 3,675 fps. Accurate 2015 gives the best case fill at 100 %, and 28 of the 28 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (405 MPa), the top charges use 53–90 %, leaving at least 10 % headroom. The 50.0 gr projectile in 0.243" calls for a 1:9.5 twist; slower twists will usually not stabilise this weight. Accurate 2015, Alliant AR-Comp, Alliant Reloder-10x 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. ADI AR 2207, Norma 200, ReloadSwiss RS 36 rank at the top here: for 6 mm B.R. Rem. with the .243 | 50gr | Impala LWHV LS 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.