Load Specifications
Load data in caliber 6 x 45 mm with .243 | 100gr | MEN SP bullet and 55 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 Shooters World AR Plus.
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: 22"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 1680 | <<locked>> | 84% | 48,805 psi | 89% | 2352 fps | 100% |
| Accurate 2015 | <<locked>> | 98% | 49,023 psi | 89% | 2431 fps | 100% |
| Accurate 2460 | <<locked>> | 94% | 47,630 psi | 86% | 2438 fps | 98.4% |
| Accurate 2495ᴾ | <<locked>> | 100% | 40,001 psi | 73% | 2365 fps | 99.5% |
| Accurate 2520 | <<locked>> | 98% | 47,326 psi | 86% | 2470 fps | 98% |
| Accurate 4064ᴾ | <<locked>> | 100% | 37,231 psi | 68% | 2333 fps | 97.1% |
| Accurate LT-30 | <<locked>> | 90% | 49,792 psi | 90% | 2362 fps | 99.5% |
| Accurate LT-32 | <<locked>> | 88% | 46,891 psi | 85% | 2323 fps | 97.8% |
| ADI AR 2207 | <<locked>> | 88% | 49,342 psi | 90% | 2398 fps | 100% |
| ADI AR 2219 | <<locked>> | 90% | 47,311 psi | 86% | 2451 fps | 99.2% |
| ADI Benchmark 8208 | <<locked>> | 98% | 48,051 psi | 87% | 2438 fps | 96.3% |
| Alliant AR-Compᴾ | <<locked>> | 100% | 47,805 psi | 87% | 2490 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 94% | 48,066 psi | 87% | 2520 fps | 95.8% |
| Alliant Reloder-10x | <<locked>> | 94% | 49,371 psi | 90% | 2448 fps | 100% |
| Alliant Reloder-7 | <<locked>> | 86% | 47,950 psi | 87% | 2369 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 90% | 48,080 psi | 87% | 2362 fps | 99.5% |
| Hodgdon Benchmark | <<locked>> | 96% | 48,254 psi | 88% | 2398 fps | 97% |
| Hodgdon BL-C2ᴾ | <<locked>> | 100% | 48,051 psi | 87% | 2500 fps | 97% |
| Hodgdon H322 | <<locked>> | 94% | 48,718 psi | 88% | 2470 fps | 99.4% |
| Hodgdon H335 | <<locked>> | 92% | 46,644 psi | 85% | 2444 fps | 98.4% |
| Hodgdon H4198 | <<locked>> | 86% | 48,457 psi | 88% | 2359 fps | 99.1% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 32,126 psi | 58% | 1457 fps | 100% |
| IMR 3031ᴾ | <<locked>> | 100% | 45,542 psi | 83% | 2480 fps | 99.6% |
| IMR 4198 | <<locked>> | 92% | 48,124 psi | 87% | 2385 fps | 100% |
| IMR 4227 | <<locked>> | 82% | 48,979 psi | 89% | 2329 fps | 100% |
| IMR 8208 XBR | <<locked>> | 98% | 48,051 psi | 87% | 2438 fps | 96.3% |
| Lovex D073.4 | <<locked>> | 88% | 48,312 psi | 88% | 2448 fps | 98% |
| Lovex D073.5 | <<locked>> | 94% | 47,123 psi | 86% | 2428 fps | 97.1% |
| Lovex D073.6ᴾ | <<locked>> | 100% | 44,483 psi | 81% | 2438 fps | 97.5% |
| Lovex S053 | <<locked>> | 82% | 47,442 psi | 86% | 2280 fps | 100% |
| Norma 200 | <<locked>> | 88% | 46,514 psi | 84% | 2388 fps | 100% |
| Norma 201ᴾ | <<locked>> | 100% | 46,847 psi | 85% | 2421 fps | 96.2% |
| Norma 202ᴾ | <<locked>> | 100% | 46,514 psi | 84% | 2441 fps | 98.5% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 32,372 psi | 59% | 1496 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 82% | 48,283 psi | 88% | 2356 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 94% | 48,182 psi | 87% | 2441 fps | 97.8% |
| Rottweil R 901 | <<locked>> | 98% | 47,834 psi | 87% | 2428 fps | 98.4% |
| Shooters World AR Plus | <<locked>> | 88% | 48,312 psi | 88% | 2448 fps | 98% |
| Shooters World Match Rifleᴾ | <<locked>> | 100% | 44,483 psi | 81% | 2438 fps | 97.5% |
| Shooters World Tactical Rifle | <<locked>> | 92% | 49,182 psi | 89% | 2411 fps | 96% |
| SNPE Vectan BA6 1/2 | <<locked>> | 86% | 49,008 psi | 89% | 2162 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 90% | 47,601 psi | 86% | 2451 fps | 98.5% |
| SNPE Vectan SP 3 | <<locked>> | 92% | 48,022 psi | 87% | 2421 fps | 99.7% |
| SNPE Vectan Tubal 3000 | <<locked>> | 98% | 47,253 psi | 86% | 2362 fps | 98.4% |
| SNPE Vectan Tubal 5000ᴾ | <<locked>> | 100% | 40,016 psi | 73% | 2264 fps | 98% |
| Somchem S321 | <<locked>> | 96% | 48,820 psi | 89% | 2474 fps | 96.8% |
| Somchem S335ᴾ | <<locked>> | 100% | 48,660 psi | 88% | 2405 fps | 99.2% |
| Vihtavuori N120 | <<locked>> | 88% | 49,443 psi | 90% | 2356 fps | 100% |
| Vihtavuori N130 | <<locked>> | 94% | 47,616 psi | 86% | 2369 fps | 100% |
| Vihtavuori N133ᴾ | <<locked>> | 100% | 49,081 psi | 89% | 2402 fps | 99.9% |
| Vihtavuori N135ᴾ | <<locked>> | 100% | 41,046 psi | 74% | 2365 fps | 99.6% |
| Vihtavuori N140ᴾ | <<locked>> | 100% | 43,874 psi | 80% | 2379 fps | 98.3% |
| Vihtavuori N530 | <<locked>> | 98% | 48,240 psi | 88% | 2434 fps | 96.4% |
| Vihtavuori N540ᴾ | <<locked>> | 100% | 42,148 psi | 76% | 2365 fps | 97.4% |
| Winchester 748ᴾ | <<locked>> | 100% | 49,559 psi | 90% | 2516 fps | 97.6% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 22"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 1680 | <<locked>> | 80% | 43,047 psi | 78% | 2267 fps | 99.9% |
| Accurate 2015 | <<locked>> | 80% | 27,891 psi | 51% | 2047 fps | 96.2% |
| Accurate 2460 | <<locked>> | 84% | 33,794 psi | 61% | 2195 fps | 95% |
| Accurate 2495 | <<locked>> | 86% | 25,005 psi | 45% | 2051 fps | 95.4% |
| Accurate 2520 | <<locked>> | 90% | 35,839 psi | 65% | 2277 fps | 95.2% |
| Accurate 4064 | <<locked>> | 96% | 32,663 psi | 59% | 2241 fps | 95.6% |
| Accurate LT-30 | <<locked>> | 80% | 36,622 psi | 66% | 2149 fps | 97.4% |
| Accurate LT-32 | <<locked>> | 80% | 37,014 psi | 67% | 2152 fps | 95.4% |
| ADI AR 2207 | <<locked>> | 80% | 38,464 psi | 70% | 2241 fps | 100% |
| ADI AR 2219 | 18.5 gr | 80% | 34,084 psi | 62% | 2211 fps | 96.5% |
| ADI Benchmark 8208 | <<locked>> | 96% | 45,411 psi | 82% | 2398 fps | 95.7% |
| Alliant AR-Comp | <<locked>> | 80% | 25,672 psi | 47% | 2057 fps | 97.8% |
| Alliant Power Pro 1200-R | <<locked>> | 92% | 45,397 psi | 82% | 2477 fps | 95.2% |
| Alliant Reloder-10x | <<locked>> | 80% | 32,445 psi | 59% | 2159 fps | 98.7% |
| Alliant Reloder-7 | <<locked>> | 80% | 39,929 psi | 72% | 2244 fps | 99.9% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 34,563 psi | 63% | 2136 fps | 97.1% |
| Hodgdon Benchmark | <<locked>> | 90% | 40,451 psi | 73% | 2270 fps | 95% |
| Hodgdon BL-C2 | <<locked>> | 96% | 42,264 psi | 77% | 2405 fps | 95.7% |
| Hodgdon H322 | <<locked>> | 80% | 31,270 psi | 57% | 2149 fps | 95.4% |
| Hodgdon H335 | <<locked>> | 82% | 33,388 psi | 61% | 2201 fps | 95% |
| Hodgdon H4198 | <<locked>> | 80% | 40,350 psi | 73% | 2228 fps | 97.7% |
| Hodgdon TrailBoss | <<locked>> | 80% | 23,714 psi | 43% | 1299 fps | 100% |
| IMR 3031 | <<locked>> | 86% | 29,689 psi | 54% | 2165 fps | 95.7% |
| IMR 4198 | <<locked>> | 80% | 34,069 psi | 62% | 2149 fps | 99.5% |
| IMR 4227 | <<locked>> | 80% | 46,166 psi | 84% | 2290 fps | 100% |
| IMR 8208 XBR | <<locked>> | 96% | 45,411 psi | 82% | 2398 fps | 95.7% |
| Lovex D073.4 | <<locked>> | 80% | 36,651 psi | 67% | 2251 fps | 95.1% |
| Lovex D073.5 | <<locked>> | 88% | 38,551 psi | 70% | 2287 fps | 95% |
| Lovex D073.6 | <<locked>> | 94% | 36,666 psi | 67% | 2306 fps | 95.5% |
| Lovex S053 | <<locked>> | 80% | 44,817 psi | 81% | 2244 fps | 100% |
| Norma 200 | <<locked>> | 80% | 36,521 psi | 66% | 2224 fps | 99.7% |
| Norma 201 | <<locked>> | 98% | 43,671 psi | 79% | 2372 fps | 95.4% |
| Norma 202 | <<locked>> | 90% | 33,982 psi | 62% | 2221 fps | 95.4% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 23,525 psi | 43% | 1329 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 80% | 45,585 psi | 83% | 2316 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 86% | 37,478 psi | 68% | 2260 fps | 95.2% |
| Rottweil R 901 | <<locked>> | 86% | 33,939 psi | 62% | 2178 fps | 95% |
| Shooters World AR Plus | 19.2 gr | 80% | 36,651 psi | 67% | 2251 fps | 95.1% |
| Shooters World Match Rifle | <<locked>> | 94% | 36,666 psi | 67% | 2306 fps | 95.5% |
| Shooters World Tactical Rifle | <<locked>> | 90% | 45,803 psi | 83% | 2362 fps | 95.2% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 41,887 psi | 76% | 2070 fps | 100% |
| SNPE Vectan SP 10 | 19.1 gr | 80% | 34,156 psi | 62% | 2211 fps | 95.2% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 32,837 psi | 60% | 2156 fps | 97.1% |
| SNPE Vectan Tubal 3000 | <<locked>> | 88% | 34,882 psi | 63% | 2152 fps | 95.5% |
| SNPE Vectan Tubal 5000 | <<locked>> | 92% | 31,908 psi | 58% | 2110 fps | 95.6% |
| Somchem S321 | <<locked>> | 92% | 42,453 psi | 77% | 2375 fps | 95.3% |
| Somchem S335 | <<locked>> | 86% | 31,836 psi | 58% | 2113 fps | 95.5% |
| Vihtavuori N120 | <<locked>> | 80% | 38,638 psi | 70% | 2205 fps | 100% |
| Vihtavuori N130 | <<locked>> | 80% | 31,082 psi | 56% | 2083 fps | 98.1% |
| Vihtavuori N133 | <<locked>> | 80% | 27,035 psi | 49% | 1998 fps | 95.5% |
| Vihtavuori N135 | <<locked>> | 84% | 25,469 psi | 46% | 2031 fps | 95.1% |
| Vihtavuori N140 | <<locked>> | 90% | 32,329 psi | 59% | 2162 fps | 95% |
| Vihtavuori N530 | <<locked>> | 96% | 45,498 psi | 83% | 2392 fps | 95.7% |
| Vihtavuori N540 | <<locked>> | 94% | 35,201 psi | 64% | 2238 fps | 95.4% |
| Winchester 748 | <<locked>> | 94% | 40,756 psi | 74% | 2372 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 55 powders for 6 x 45 mm loaded with the .243 | 100gr | MEN SP. Alliant Power Pro 1200-R delivers the highest muzzle velocity at 2,520 fps; across all powders the maximum-charge window runs from 1,457 fps to 2,520 fps. Accurate 2495 gives the best case fill at 100 %, and 55 of the 55 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (380 MPa), the top charges use 58–90 %, leaving at least 10 % headroom. The 100.0 gr projectile in 0.243" calls for a 1:11.0 twist; slower twists will usually not stabilise this weight. Accurate 2495, Accurate 4064, Alliant AR-Comp 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, Shooters World AR Plus rank at the top here: for 6 x 45 mm with the .243 | 100gr | MEN SP 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.