Load Specifications
Load data in caliber 6 x 47 ATZL with .243 | 100gr | Speer Grand Slam bullet and 79 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Power Pro 1200-R, Winchester 748 and Accurate 2520.
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>> | 82% | 50,488 psi | 86% | 2474 fps | 100% |
| Accurate 2015 | <<locked>> | 96% | 51,967 psi | 88% | 2572 fps | 100% |
| Accurate 2200 | <<locked>> | 86% | 50,198 psi | 85% | 2592 fps | 95.9% |
| Accurate 2230 | <<locked>> | 86% | 50,343 psi | 86% | 2598 fps | 96.4% |
| Accurate 2460 | <<locked>> | 92% | 50,488 psi | 86% | 2585 fps | 99.6% |
| Accurate 2495ᴾ | <<locked>> | 100% | 46,586 psi | 79% | 2562 fps | 100% |
| Accurate 2520 | <<locked>> | 96% | 51,053 psi | 87% | 2631 fps | 99.4% |
| Accurate 4064ᴾ | <<locked>> | 100% | 43,265 psi | 74% | 2539 fps | 99.3% |
| Accurate LT-30 | <<locked>> | 88% | 51,503 psi | 88% | 2497 fps | 100% |
| Accurate LT-32 | <<locked>> | 88% | 51,996 psi | 89% | 2510 fps | 99.4% |
| ADI AR 2206H | <<locked>> | 98% | 51,140 psi | 87% | 2625 fps | 97.1% |
| ADI AR 2207 | <<locked>> | 86% | 51,967 psi | 88% | 2526 fps | 100% |
| ADI AR 2219 | <<locked>> | 88% | 50,183 psi | 85% | 2598 fps | 99.9% |
| ADI Benchmark 8208 | <<locked>> | 96% | 51,155 psi | 87% | 2598 fps | 98.2% |
| Alliant AR-Comp | <<locked>> | 98% | 51,953 psi | 88% | 2644 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 92% | 51,300 psi | 87% | 2684 fps | 97.9% |
| Alliant Reloder- TS 15.5ᴾ | <<locked>> | 100% | 43,787 psi | 75% | 2536 fps | 96.6% |
| Alliant Reloder-10x | <<locked>> | 92% | 52,489 psi | 89% | 2589 fps | 100% |
| Alliant Reloder-15ᴾ | <<locked>> | 100% | 48,008 psi | 82% | 2598 fps | 95.9% |
| Alliant Reloder-7 | <<locked>> | 84% | 50,125 psi | 85% | 2497 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 88% | 49,734 psi | 85% | 2490 fps | 100% |
| Bofors RP3ᴾ | <<locked>> | 100% | 43,308 psi | 74% | 2539 fps | 96.6% |
| Hodgdon Benchmark | <<locked>> | 94% | 50,865 psi | 87% | 2549 fps | 98.6% |
| Hodgdon BL-C2 | <<locked>> | 98% | 51,706 psi | 88% | 2664 fps | 98.8% |
| Hodgdon CFE223 | <<locked>> | 94% | 50,372 psi | 86% | 2687 fps | 96.3% |
| Hodgdon H322 | <<locked>> | 92% | 51,488 psi | 88% | 2615 fps | 100% |
| Hodgdon H335 | <<locked>> | 92% | 53,026 psi | 90% | 2644 fps | 99.8% |
| Hodgdon H4198 | <<locked>> | 84% | 50,328 psi | 86% | 2493 fps | 99.8% |
| Hodgdon H4895 | <<locked>> | 98% | 51,401 psi | 88% | 2638 fps | 97.7% |
| Hodgdon LEVERevolutionᴾ | <<locked>> | 100% | 49,124 psi | 84% | 2648 fps | 97.7% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 32,953 psi | 56% | 1542 fps | 100% |
| Hodgdon VARGET | <<locked>> | 98% | 49,980 psi | 85% | 2595 fps | 97.3% |
| IMR 3031ᴾ | <<locked>> | 100% | 52,054 psi | 89% | 2680 fps | 100% |
| IMR 4064ᴾ | <<locked>> | 100% | 48,051 psi | 82% | 2546 fps | 95.8% |
| IMR 4198 | <<locked>> | 90% | 51,024 psi | 87% | 2523 fps | 100% |
| IMR 4895ᴾ | <<locked>> | 100% | 49,066 psi | 84% | 2631 fps | 96.8% |
| IMR 8208 XBR | <<locked>> | 96% | 51,155 psi | 87% | 2598 fps | 98.2% |
| Lovex D073.4 | <<locked>> | 86% | 51,256 psi | 87% | 2598 fps | 99.3% |
| Lovex D073.5 | <<locked>> | 92% | 50,908 psi | 87% | 2592 fps | 98.9% |
| Lovex D073.6ᴾ | <<locked>> | 100% | 52,141 psi | 89% | 2657 fps | 99.5% |
| Lovex S053 | <<locked>> | 82% | 52,156 psi | 89% | 2431 fps | 100% |
| Lovex S060 | <<locked>> | 98% | 52,634 psi | 90% | 2569 fps | 97.3% |
| Lovex S062ᴾ | <<locked>> | 100% | 47,021 psi | 80% | 2552 fps | 97.7% |
| Norma 200 | <<locked>> | 88% | 52,533 psi | 89% | 2566 fps | 100% |
| Norma 201ᴾ | <<locked>> | 100% | 52,692 psi | 90% | 2621 fps | 98.5% |
| Norma 202ᴾ | <<locked>> | 100% | 53,069 psi | 90% | 2644 fps | 99.8% |
| Norma 203Bᴾ | <<locked>> | 100% | 46,992 psi | 80% | 2589 fps | 96.3% |
| Ramshot Big Gameᴾ | <<locked>> | 100% | 47,892 psi | 82% | 2608 fps | 95.9% |
| Ramshot Wild Boar | <<locked>> | 96% | 50,357 psi | 86% | 2621 fps | 96.8% |
| Ramshot X-Terminator | <<locked>> | 92% | 49,530 psi | 84% | 2549 fps | 96.5% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 33,156 psi | 56% | 1581 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 92% | 51,039 psi | 87% | 2595 fps | 99.2% |
| ReloadSwiss RS 52ᴾ | <<locked>> | 100% | 50,212 psi | 85% | 2694 fps | 96.2% |
| ReloadSwiss RS 60ᴾ | <<locked>> | 100% | 41,843 psi | 71% | 2559 fps | 97.3% |
| Rottweil R 901 | <<locked>> | 96% | 50,734 psi | 86% | 2579 fps | 99.6% |
| Rottweil R 902ᴾ | <<locked>> | 100% | 50,053 psi | 85% | 2575 fps | 98.1% |
| Shooters World AR Plus | <<locked>> | 86% | 51,256 psi | 87% | 2598 fps | 99.3% |
| Shooters World Match Rifleᴾ | <<locked>> | 100% | 52,141 psi | 89% | 2657 fps | 99.5% |
| Shooters World Precisionᴾ | <<locked>> | 100% | 47,021 psi | 80% | 2552 fps | 97.7% |
| Shooters World Tactical Rifle | <<locked>> | 90% | 51,532 psi | 88% | 2559 fps | 97.9% |
| SNPE Vectan BA6 1/2 | <<locked>> | 84% | 50,024 psi | 85% | 2260 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 88% | 50,618 psi | 86% | 2602 fps | 99.6% |
| SNPE Vectan SP 3 | <<locked>> | 90% | 50,560 psi | 86% | 2562 fps | 100% |
| SNPE Vectan SP 9ᴾ | <<locked>> | 100% | 52,533 psi | 89% | 2641 fps | 97.2% |
| SNPE Vectan Tubal 3000 | <<locked>> | 98% | 52,953 psi | 90% | 2549 fps | 99.7% |
| SNPE Vectan Tubal 5000ᴾ | <<locked>> | 100% | 45,469 psi | 77% | 2457 fps | 99.6% |
| Somchem S321 | <<locked>> | 94% | 52,083 psi | 89% | 2635 fps | 98.6% |
| Somchem S335 | <<locked>> | 98% | 51,184 psi | 87% | 2546 fps | 99.9% |
| Somchem S341 | <<locked>> | 98% | 51,895 psi | 88% | 2615 fps | 96.9% |
| Vihtavuori N120 | <<locked>> | 86% | 52,011 psi | 89% | 2480 fps | 100% |
| Vihtavuori N130 | <<locked>> | 92% | 50,169 psi | 85% | 2503 fps | 100% |
| Vihtavuori N133 | <<locked>> | 98% | 52,228 psi | 89% | 2546 fps | 100% |
| Vihtavuori N135ᴾ | <<locked>> | 100% | 47,659 psi | 81% | 2562 fps | 100% |
| Vihtavuori N140ᴾ | <<locked>> | 100% | 50,038 psi | 85% | 2575 fps | 99.8% |
| Vihtavuori N150ᴾ | <<locked>> | 100% | 40,001 psi | 68% | 2428 fps | 96.5% |
| Vihtavuori N530 | <<locked>> | 96% | 51,271 psi | 87% | 2592 fps | 98.3% |
| Vihtavuori N540ᴾ | <<locked>> | 100% | 48,704 psi | 83% | 2575 fps | 99.4% |
| Winchester 748 | <<locked>> | 98% | 53,142 psi | 90% | 2687 fps | 99.2% |
| Winchester StaBALL Matchᴾ | <<locked>> | 100% | 51,982 psi | 88% | 2654 fps | 97.8% |
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% | 47,529 psi | 81% | 2434 fps | 100% |
| Accurate 2015 | <<locked>> | 80% | 31,763 psi | 54% | 2228 fps | 98.6% |
| Accurate 2200 | <<locked>> | 84% | 47,181 psi | 80% | 2539 fps | 95.2% |
| Accurate 2230 | <<locked>> | 84% | 47,239 psi | 80% | 2549 fps | 95.7% |
| Accurate 2460 | <<locked>> | 80% | 33,910 psi | 58% | 2293 fps | 96.5% |
| Accurate 2495 | <<locked>> | 80% | 24,091 psi | 41% | 2106 fps | 96.4% |
| Accurate 2520 | 22.1 gr | 82% | 31,444 psi | 54% | 2280 fps | 95.2% |
| Accurate 4064 | <<locked>> | 86% | 27,746 psi | 47% | 2215 fps | 95.1% |
| Accurate LT-30 | <<locked>> | 80% | 40,306 psi | 69% | 2320 fps | 99.2% |
| Accurate LT-32 | <<locked>> | 80% | 40,683 psi | 69% | 2326 fps | 97.8% |
| ADI AR 2206H | <<locked>> | 94% | 45,324 psi | 77% | 2533 fps | 95.8% |
| ADI AR 2207 | <<locked>> | 80% | 42,960 psi | 73% | 2402 fps | 100% |
| ADI AR 2219 | <<locked>> | 80% | 37,942 psi | 65% | 2395 fps | 98.7% |
| ADI Benchmark 8208 | <<locked>> | 86% | 37,289 psi | 63% | 2359 fps | 95% |
| Alliant AR-Comp | <<locked>> | 80% | 28,993 psi | 49% | 2241 fps | 99.7% |
| Alliant Power Pro 1200-R | 21.5 gr | 84% | 39,697 psi | 68% | 2480 fps | 95.2% |
| Alliant Reloder- TS 15.5 | <<locked>> | 96% | 38,696 psi | 66% | 2441 fps | 95.2% |
| Alliant Reloder-10x | <<locked>> | 80% | 36,318 psi | 62% | 2329 fps | 99.9% |
| Alliant Reloder-15 | <<locked>> | 98% | 45,150 psi | 77% | 2552 fps | 95.1% |
| Alliant Reloder-7 | <<locked>> | 80% | 44,280 psi | 75% | 2411 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 38,566 psi | 66% | 2310 fps | 99.1% |
| Bofors RP3 | <<locked>> | 98% | 40,553 psi | 69% | 2490 fps | 95.8% |
| Hodgdon Benchmark | <<locked>> | 82% | 35,621 psi | 61% | 2280 fps | 95.1% |
| Hodgdon BL-C2 | <<locked>> | 88% | 36,956 psi | 63% | 2415 fps | 95.7% |
| Hodgdon CFE223 | <<locked>> | 92% | 47,413 psi | 81% | 2635 fps | 95.5% |
| Hodgdon H322 | <<locked>> | 80% | 35,157 psi | 60% | 2336 fps | 98.1% |
| Hodgdon H335 | <<locked>> | 80% | 35,317 psi | 60% | 2346 fps | 97.2% |
| Hodgdon H4198 | <<locked>> | 80% | 44,440 psi | 76% | 2402 fps | 99.4% |
| Hodgdon H4895 | <<locked>> | 90% | 39,813 psi | 68% | 2441 fps | 95% |
| Hodgdon LEVERevolution | <<locked>> | 94% | 40,524 psi | 69% | 2497 fps | 95.5% |
| Hodgdon TrailBoss | <<locked>> | 80% | 24,453 psi | 42% | 1378 fps | 100% |
| Hodgdon VARGET | <<locked>> | 92% | 41,669 psi | 71% | 2454 fps | 95.3% |
| IMR 3031 | <<locked>> | 80% | 27,833 psi | 47% | 2218 fps | 96.5% |
| IMR 4064 | <<locked>> | 98% | 45,136 psi | 77% | 2500 fps | 95.1% |
| IMR 4198 | <<locked>> | 80% | 38,058 psi | 65% | 2320 fps | 100% |
| IMR 4895 | <<locked>> | 96% | 43,337 psi | 74% | 2536 fps | 95.5% |
| IMR 8208 XBR | <<locked>> | 86% | 37,289 psi | 63% | 2359 fps | 95% |
| Lovex D073.4 | <<locked>> | 80% | 41,263 psi | 70% | 2441 fps | 97.8% |
| Lovex D073.5 | <<locked>> | 80% | 33,794 psi | 58% | 2290 fps | 95% |
| Lovex D073.6 | <<locked>> | 86% | 32,430 psi | 55% | 2313 fps | 95.5% |
| Lovex S053 | <<locked>> | 80% | 49,617 psi | 84% | 2398 fps | 100% |
| Lovex S060 | <<locked>> | 92% | 44,063 psi | 75% | 2434 fps | 95.4% |
| Lovex S062 | <<locked>> | 92% | 36,782 psi | 63% | 2369 fps | 95% |
| Norma 200 | <<locked>> | 80% | 41,017 psi | 70% | 2395 fps | 100% |
| Norma 201 | <<locked>> | 90% | 38,783 psi | 66% | 2392 fps | 95.6% |
| Norma 202 | <<locked>> | 82% | 29,878 psi | 51% | 2221 fps | 95.3% |
| Norma 203B | <<locked>> | 98% | 44,208 psi | 75% | 2539 fps | 95.6% |
| Ramshot Big Game | <<locked>> | 98% | 44,585 psi | 76% | 2549 fps | 95.1% |
| Ramshot Wild Boar | <<locked>> | 92% | 44,048 psi | 75% | 2516 fps | 95.3% |
| Ramshot X-Terminator | <<locked>> | 88% | 43,569 psi | 74% | 2451 fps | 95% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 24,294 psi | 41% | 1407 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 34,896 psi | 59% | 2310 fps | 95.9% |
| ReloadSwiss RS 52 | <<locked>> | 98% | 47,137 psi | 80% | 2644 fps | 95.5% |
| ReloadSwiss RS 60 | <<locked>> | 96% | 37,130 psi | 63% | 2457 fps | 95.6% |
| Rottweil R 901 | <<locked>> | 80% | 32,053 psi | 55% | 2231 fps | 95.8% |
| Rottweil R 902 | <<locked>> | 92% | 39,189 psi | 67% | 2392 fps | 95.7% |
| Shooters World AR Plus | <<locked>> | 80% | 41,263 psi | 70% | 2441 fps | 97.8% |
| Shooters World Match Rifle | <<locked>> | 86% | 32,430 psi | 55% | 2313 fps | 95.5% |
| Shooters World Precision | <<locked>> | 92% | 36,782 psi | 63% | 2369 fps | 95% |
| Shooters World Tactical Rifle | <<locked>> | 82% | 39,711 psi | 68% | 2369 fps | 95.2% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 45,295 psi | 77% | 2201 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 38,754 psi | 66% | 2405 fps | 98% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 37,144 psi | 63% | 2343 fps | 99.1% |
| SNPE Vectan SP 9 | <<locked>> | 94% | 43,294 psi | 74% | 2493 fps | 95.2% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 30,734 psi | 52% | 2159 fps | 95.5% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 27,804 psi | 47% | 2110 fps | 95.6% |
| Somchem S321 | <<locked>> | 84% | 37,043 psi | 63% | 2379 fps | 95.3% |
| Somchem S335 | <<locked>> | 80% | 29,762 psi | 51% | 2159 fps | 96.2% |
| Somchem S341 | <<locked>> | 94% | 45,324 psi | 77% | 2516 fps | 95.5% |
| Vihtavuori N120 | <<locked>> | 80% | 43,004 psi | 73% | 2359 fps | 100% |
| Vihtavuori N130 | <<locked>> | 80% | 34,969 psi | 60% | 2257 fps | 99.6% |
| Vihtavuori N133 | <<locked>> | 80% | 30,458 psi | 52% | 2175 fps | 98.1% |
| Vihtavuori N135 | <<locked>> | 80% | 25,570 psi | 44% | 2126 fps | 96.8% |
| Vihtavuori N140 | <<locked>> | 82% | 28,660 psi | 49% | 2172 fps | 95.1% |
| Vihtavuori N150 | <<locked>> | 96% | 35,317 psi | 60% | 2336 fps | 95% |
| Vihtavuori N530 | <<locked>> | 86% | 37,420 psi | 64% | 2359 fps | 95.1% |
| Vihtavuori N540 | <<locked>> | 86% | 31,024 psi | 53% | 2247 fps | 95.5% |
| Winchester 748 | 23 gr | 86% | 35,505 psi | 60% | 2379 fps | 95.4% |
| Winchester StaBALL Match | <<locked>> | 94% | 42,728 psi | 73% | 2503 fps | 95.8% |
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 79 powders for 6 x 47 ATZL loaded with the .243 | 100gr | Speer Grand Slam. ReloadSwiss RS 52 delivers the highest muzzle velocity at 2,694 fps; across all powders the maximum-charge window runs from 1,542 fps to 2,694 fps. Accurate 2495 gives the best case fill at 100 %, and 79 of the 79 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (405 MPa), the top charges use 56–90 %, leaving at least 10 % headroom. The 100.0 gr projectile in 0.243" calls for a 1:10.5 twist; slower twists will usually not stabilise this weight. Accurate 2495, Accurate 4064, Alliant Reloder- TS 15.5 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 Power Pro 1200-R, Winchester 748, Accurate 2520 rank at the top here: for 6 x 47 ATZL with the .243 | 100gr | Speer Grand Slam 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.