Load data for 6 x 47 ATZL + .243 | 100gr | Sierra SP SemiSp

6 x 47 ATZL cartridge drawing
Sierra logo

Load Specifications

Bullet Manufacturer:Sierra
Bullet Weight:100 gr
Bullet Diameter:0.243"
Bullet Length:<<locked>>
Case Length (l3):1.85"
Cartridge Length (C.O.L.):<<locked>>
Case Capacity:33 Grains of Water
Primer Size:Small Rifle (SR)
Barrel Length:23.62"
Max. allowed Pressure:58,740 psi
Recommended Twist Rate:1:11.5

Load data in caliber 6 x 47 ATZL with .243 | 100gr | Sierra SP SemiSp bullet and 82 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 Hodgdon BL-C2.

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"

PowderChargeFRMaxP%V(0)z
Accurate 1680<<locked>>82%51,837 psi88%2503 fps100%
Accurate 2015<<locked>>94%50,227 psi86%2559 fps100%
Accurate 2200<<locked>>86%51,677 psi88%2628 fps96.5%
Accurate 2230<<locked>>86%51,735 psi88%2635 fps96.9%
Accurate 2460<<locked>>92%52,388 psi89%2621 fps99.8%
Accurate 2495ᴾ<<locked>>100%48,646 psi83%2598 fps100%
Accurate 2520<<locked>>96%52,924 psi90%2667 fps99.7%
Accurate 4064ᴾ<<locked>>100%45,121 psi77%2575 fps99.6%
Accurate LT-30<<locked>>88%52,243 psi89%2520 fps100%
Accurate LT-32<<locked>>88%52,736 psi90%2533 fps99.6%
ADI AR 2206H<<locked>>98%52,301 psi89%2657 fps97.5%
ADI AR 2207<<locked>>86%53,055 psi90%2549 fps100%
ADI AR 2219<<locked>>88%50,937 psi87%2621 fps100%
ADI Benchmark 8208<<locked>>96%52,286 psi89%2628 fps98.5%
Alliant AR-Comp<<locked>>96%50,038 psi85%2628 fps100%
Alliant Power Pro 1200-R<<locked>>92%52,692 psi90%2717 fps98.3%
Alliant Power Pro 2000-MRᴾ<<locked>>100%52,475 psi89%2740 fps96.1%
Alliant Reloder- TS 15.5ᴾ<<locked>>100%44,904 psi76%2566 fps97%
Alliant Reloder-10x<<locked>>90%50,821 psi87%2575 fps100%
Alliant Reloder-15ᴾ<<locked>>100%49,081 psi84%2628 fps96.3%
Alliant Reloder-7<<locked>>84%51,024 psi87%2520 fps100%
Baschieri & Pellagri 106<<locked>>88%51,314 psi87%2523 fps100%
Baschieri & Pellagri 107<<locked>>98%52,228 psi89%2667 fps96.2%
Bofors RP3ᴾ<<locked>>100%44,382 psi76%2569 fps97%
Hodgdon Benchmark<<locked>>94%52,025 psi89%2579 fps98.9%
Hodgdon BL-C2<<locked>>96%49,661 psi85%2648 fps98.7%
Hodgdon CFE223<<locked>>94%52,054 psi89%2726 fps96.9%
Hodgdon H322<<locked>>92%52,895 psi90%2648 fps100%
Hodgdon H335<<locked>>90%50,459 psi86%2621 fps99.7%
Hodgdon H4198<<locked>>84%51,169 psi87%2520 fps99.9%
Hodgdon H4895<<locked>>98%52,591 psi90%2667 fps98.1%
Hodgdon LEVERevolutionᴾ<<locked>>100%50,647 psi86%2687 fps98.1%
Hodgdon TrailBossᴾ<<locked>>100%33,040 psi56%1555 fps100%
Hodgdon VARGET<<locked>>98%51,097 psi87%2625 fps97.7%
IMR 3031<<locked>>98%50,836 psi87%2674 fps100%
IMR 4064ᴾ<<locked>>100%49,734 psi85%2585 fps96.4%
IMR 4198<<locked>>90%52,025 psi89%2546 fps100%
IMR 4895ᴾ<<locked>>100%50,183 psi85%2664 fps97.3%
IMR 8208 XBR<<locked>>96%52,286 psi89%2628 fps98.5%
Lovex D073.4<<locked>>86%52,678 psi90%2631 fps99.5%
Lovex D073.5<<locked>>92%52,083 psi89%2621 fps99.2%
Lovex D073.6<<locked>>98%50,067 psi85%2641 fps99.4%
Lovex S060<<locked>>96%50,720 psi86%2556 fps97.1%
Lovex S062ᴾ<<locked>>100%48,196 psi82%2582 fps98%
Norma 200<<locked>>86%50,923 psi87%2556 fps100%
Norma 201<<locked>>98%51,343 psi87%2615 fps98.5%
Norma 202<<locked>>98%51,068 psi87%2628 fps99.8%
Norma 203Bᴾ<<locked>>100%48,109 psi82%2618 fps96.8%
Ramshot Big Gameᴾ<<locked>>100%49,284 psi84%2644 fps96.5%
Ramshot Wild Boar<<locked>>96%51,300 psi87%2648 fps97.2%
Ramshot X-Terminator<<locked>>92%51,169 psi87%2585 fps97%
ReloadSwiss RS 14ᴾ<<locked>>100%33,228 psi57%1594 fps100%
ReloadSwiss RS 40<<locked>>92%52,344 psi89%2628 fps99.4%
ReloadSwiss RS 52ᴾ<<locked>>100%51,851 psi88%2736 fps96.8%
ReloadSwiss RS 60ᴾ<<locked>>100%43,033 psi73%2598 fps97.9%
Rottweil R 901<<locked>>96%52,127 psi89%2608 fps99.7%
Rottweil R 902ᴾ<<locked>>100%51,285 psi87%2605 fps98.4%
Rottweil R 903ᴾ<<locked>>100%41,553 psi71%2510 fps95.9%
Shooters World AR Plus<<locked>>86%52,678 psi90%2631 fps99.5%
Shooters World Match Rifle<<locked>>98%50,067 psi85%2641 fps99.4%
Shooters World Precisionᴾ<<locked>>100%48,196 psi82%2582 fps98%
Shooters World Tactical Rifle<<locked>>88%49,530 psi84%2546 fps97.7%
SNPE Vectan BA6 1/2<<locked>>84%51,242 psi87%2287 fps100%
SNPE Vectan SP 10<<locked>>88%51,837 psi88%2635 fps99.8%
SNPE Vectan SP 3<<locked>>90%51,459 psi88%2585 fps100%
SNPE Vectan SP 9<<locked>>98%51,068 psi87%2635 fps97.2%
SNPE Vectan Tubal 3000<<locked>>96%50,995 psi87%2536 fps99.7%
SNPE Vectan Tubal 5000ᴾ<<locked>>100%46,644 psi79%2487 fps99.8%
Somchem S321<<locked>>94%53,113 psi90%2664 fps98.9%
Somchem S335<<locked>>98%52,939 psi90%2582 fps100%
Somchem S341<<locked>>96%49,719 psi85%2598 fps96.8%
Somchem S355ᴾ<<locked>>100%43,004 psi73%2520 fps96.1%
Vihtavuori N120<<locked>>86%53,026 psi90%2503 fps100%
Vihtavuori N130<<locked>>92%50,966 psi87%2526 fps100%
Vihtavuori N133<<locked>>96%50,372 psi86%2533 fps100%
Vihtavuori N135ᴾ<<locked>>100%49,037 psi83%2592 fps100%
Vihtavuori N140ᴾ<<locked>>100%51,793 psi88%2612 fps99.9%
Vihtavuori N150ᴾ<<locked>>100%41,510 psi71%2467 fps97.1%
Vihtavuori N530<<locked>>96%53,069 psi90%2631 fps98.7%
Vihtavuori N540ᴾ<<locked>>100%49,690 psi85%2602 fps99.6%
Winchester 748<<locked>>96%51,024 psi87%2671 fps99.1%
Winchester StaBALL Match<<locked>>98%49,879 psi85%2635 fps97.6%

Recommended = one of the top powders for this cartridge and bullet combination.

Start Load - Barrel Length: 23.62"

PowderChargeFRMaxP%V(0)z
Accurate 1680<<locked>>80%48,283 psi82%2454 fps100%
Accurate 2015<<locked>>80%32,605 psi56%2257 fps98.9%
Accurate 2200<<locked>>84%48,559 psi83%2579 fps95.8%
Accurate 2230<<locked>>82%45,078 psi77%2526 fps95.4%
Accurate 2460<<locked>>80%34,650 psi59%2320 fps97%
Accurate 2495<<locked>>80%24,889 psi42%2136 fps97%
Accurate 2520<<locked>>82%32,590 psi55%2316 fps95.8%
Accurate 4064<<locked>>84%27,151 psi46%2208 fps95%
Accurate LT-30<<locked>>80%41,133 psi70%2346 fps99.4%
Accurate LT-32<<locked>>80%41,510 psi71%2356 fps98.1%
ADI AR 2206H<<locked>>92%43,294 psi74%2510 fps95.5%
ADI AR 2207<<locked>>80%44,034 psi75%2425 fps100%
ADI AR 2219<<locked>>80%39,247 psi67%2431 fps99.1%
ADI Benchmark 8208<<locked>>86%38,435 psi65%2392 fps95.6%
Alliant AR-Comp<<locked>>80%29,762 psi51%2270 fps99.8%
Alliant Power Pro 1200-R22 gr84%40,640 psi69%2510 fps95.7%
Alliant Power Pro 2000-MR<<locked>>98%48,805 psi83%2677 fps95.2%
Alliant Reloder- TS 15.5<<locked>>94%37,449 psi64%2428 fps95%
Alliant Reloder-10x<<locked>>80%37,318 psi64%2359 fps100%
Alliant Reloder-15<<locked>>98%46,267 psi79%2582 fps95.7%
Alliant Reloder-7<<locked>>80%45,252 psi77%2438 fps100%
Baschieri & Pellagri 106<<locked>>80%39,624 psi67%2343 fps99.3%
Baschieri & Pellagri 107<<locked>>96%48,675 psi83%2612 fps95.4%
Bofors RP3<<locked>>96%39,059 psi66%2474 fps95.6%
Hodgdon Benchmark<<locked>>82%36,347 psi62%2306 fps95.6%
Hodgdon BL-C224 gr86%35,360 psi60%2392 fps95.4%
Hodgdon CFE223<<locked>>90%45,658 psi78%2621 fps95.3%
Hodgdon H322<<locked>>80%35,940 psi61%2365 fps98.4%
Hodgdon H335<<locked>>80%36,042 psi61%2372 fps97.6%
Hodgdon H4198<<locked>>80%45,353 psi77%2431 fps99.5%
Hodgdon H4895<<locked>>90%40,988 psi70%2474 fps95.6%
Hodgdon LEVERevolution<<locked>>92%39,117 psi67%2480 fps95.3%
Hodgdon TrailBoss<<locked>>80%24,700 psi42%1391 fps100%
Hodgdon VARGET<<locked>>90%39,784 psi68%2431 fps95%
IMR 3031<<locked>>80%28,558 psi49%2247 fps97%
IMR 4064<<locked>>96%44,092 psi75%2493 fps95.1%
IMR 4198<<locked>>80%38,595 psi66%2343 fps100%
IMR 4895<<locked>>94%41,858 psi71%2520 fps95.3%
IMR 8208 XBR<<locked>>86%38,435 psi65%2392 fps95.6%
Lovex D073.4<<locked>>80%42,627 psi73%2477 fps98.2%
Lovex D073.5<<locked>>80%34,447 psi59%2316 fps95.5%
Lovex D073.6<<locked>>84%31,125 psi53%2293 fps95.2%
Lovex S060<<locked>>90%42,627 psi73%2421 fps95.3%
Lovex S062<<locked>>92%37,927 psi65%2402 fps95.6%
Norma 200<<locked>>80%41,989 psi71%2421 fps100%
Norma 201<<locked>>88%37,579 psi64%2379 fps95.5%
Norma 202<<locked>>80%29,167 psi50%2215 fps95.2%
Norma 203B<<locked>>96%42,641 psi73%2523 fps95.4%
Ramshot Big Game<<locked>>98%45,963 psi78%2589 fps95.7%
Ramshot Wild Boar<<locked>>90%42,003 psi72%2493 fps95%
Ramshot X-Terminator<<locked>>88%45,136 psi77%2490 fps95.7%
ReloadSwiss RS 14<<locked>>80%24,540 psi42%1424 fps100%
ReloadSwiss RS 40<<locked>>80%35,665 psi61%2336 fps96.4%
ReloadSwiss RS 52<<locked>>96%45,281 psi77%2628 fps95.3%
ReloadSwiss RS 60<<locked>>94%35,752 psi61%2438 fps95.3%
Rottweil R 901<<locked>>80%32,489 psi55%2251 fps96.2%
Rottweil R 902<<locked>>90%37,956 psi65%2379 fps95.5%
Rottweil R 903<<locked>>98%38,522 psi66%2454 fps95%
Shooters World AR Plus<<locked>>80%42,627 psi73%2477 fps98.2%
Shooters World Match Rifle<<locked>>84%31,125 psi53%2293 fps95.2%
Shooters World Precision<<locked>>92%37,927 psi65%2402 fps95.6%
Shooters World Tactical Rifle<<locked>>82%40,321 psi69%2392 fps95.7%
SNPE Vectan BA6 1/2<<locked>>80%45,934 psi78%2218 fps100%
SNPE Vectan SP 10<<locked>>80%39,494 psi67%2428 fps98.3%
SNPE Vectan SP 3<<locked>>80%38,072 psi65%2369 fps99.4%
SNPE Vectan SP 9<<locked>>92%41,829 psi71%2480 fps95%
SNPE Vectan Tubal 3000<<locked>>80%31,473 psi54%2188 fps96%
SNPE Vectan Tubal 5000<<locked>>82%27,079 psi46%2103 fps95.4%
Somchem S321<<locked>>82%35,882 psi61%2365 fps95.2%
Somchem S335<<locked>>80%30,487 psi52%2185 fps96.7%
Somchem S341<<locked>>92%43,642 psi74%2500 fps95.3%
Somchem S355<<locked>>98%40,509 psi69%2474 fps95.4%
Vihtavuori N120<<locked>>80%44,092 psi75%2385 fps100%
Vihtavuori N130<<locked>>80%35,868 psi61%2283 fps99.8%
Vihtavuori N133<<locked>>80%31,241 psi53%2201 fps98.5%
Vihtavuori N135<<locked>>80%26,281 psi45%2156 fps97.3%
Vihtavuori N140<<locked>>82%29,327 psi50%2201 fps95.7%
Vihtavuori N150<<locked>>96%36,245 psi62%2369 fps95.6%
Vihtavuori N530<<locked>>86%38,087 psi65%2382 fps95.6%
Vihtavuori N540<<locked>>84%29,791 psi51%2228 fps95.2%
Winchester 74823.1 gr84%34,418 psi59%2365 fps95.3%
Winchester StaBALL Match<<locked>>92%41,176 psi70%2487 fps95.6%

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.

<<locked>> you need an access license to unlock this data.

This overview compares 82 powders for 6 x 47 ATZL loaded with the .243 | 100gr | Sierra SP SemiSp. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 2,740 fps; across all powders the maximum-charge window runs from 1,555 fps to 2,740 fps. Accurate 2495 gives the best case fill at 100 %, and 82 of the 82 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 1:11.5 twist; slower twists will usually not stabilise this weight. Accurate 2495, Accurate 4064, Alliant Power Pro 2000-MR 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, Hodgdon BL-C2 rank at the top here: for 6 x 47 ATZL with the .243 | 100gr | Sierra SP SemiSp 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.

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