Load data for .300 Rem. SA Ultra Mag. + .308 | 200gr | Reichenberg Subsonic

.300 Rem. SA Ultra Mag. cartridge drawing
Reichenberg logo

Load Specifications

Bullet Manufacturer:Reichenberg
Bullet Weight:200 gr
Bullet Diameter:0.308"
Bullet Length:<<locked>>
Case Length (l3):2.003"
Cartridge Length (C.O.L.):<<locked>>
Case Capacity:74 Grains of Water
Primer Size:Large Rifle (LR)
Barrel Length:24"
Max. allowed Pressure:65,000 psi
Recommended Twist Rate:1:13.0

Load data in caliber .300 Rem. SA Ultra Mag. with .308 | 200gr | Reichenberg Subsonic bullet and 111 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 70, Hodgdon Superformance and Alliant Reloder-17.

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.

A valid access license is required to use the Personalized Load Calculator.

You can find more information in our FAQ: How can I use the Personalized Load Calculator?

Max Load - Barrel Length: 24"

PowderChargeFRMaxP%V(0)z
Accurate 2015<<locked>>82%55,695 psi86%2497 fps100%
Accurate 2495<<locked>>88%58,421 psi90%2569 fps100%
Accurate 2520<<locked>>82%56,463 psi87%2592 fps100%
Accurate 2700<<locked>>88%57,305 psi88%2598 fps98.8%
Accurate 3100ᴾ<<locked>>100%45,382 psi70%2516 fps98.6%
Accurate 4064<<locked>>90%58,334 psi90%2618 fps100%
Accurate 4350<<locked>>96%55,100 psi85%2671 fps100%
ADI AR 2206H<<locked>>86%58,537 psi90%2654 fps100%
ADI AR 2208<<locked>>90%56,115 psi86%2612 fps100%
ADI AR 2209ᴾ<<locked>>100%53,316 psi82%2661 fps97.7%
ADI Benchmark 8208<<locked>>84%57,377 psi88%2602 fps100%
Alliant AR-Comp<<locked>>82%55,463 psi85%2526 fps100%
Alliant Power Pro 2000-MR<<locked>>86%54,926 psi85%2726 fps100%
Alliant Power Pro Varmintᴾ<<locked>>100%53,011 psi82%2657 fps97.7%
Alliant Reloder- TS 15.5<<locked>>90%56,391 psi87%2631 fps100%
Alliant Reloder-15<<locked>>88%56,913 psi88%2654 fps100%
Alliant Reloder-16<<locked>>98%56,347 psi87%2726 fps100%
Alliant Reloder-17<<locked>>94%57,943 psi89%2756 fps100%
Alliant Reloder-19ᴾ<<locked>>100%52,199 psi80%2648 fps97.6%
Alliant Reloder-22ᴾ<<locked>>100%45,861 psi71%2595 fps96.5%
Alliant Reloder-23ᴾ<<locked>>100%42,975 psi66%2543 fps100%
Alliant Reloder-25ᴾ<<locked>>100%37,753 psi58%2457 fps97.4%
Alliant Reloder-26ᴾ<<locked>>100%48,776 psi75%2713 fps99.9%
Baschieri & Pellagri 107<<locked>>86%58,755 psi90%2677 fps100%
Bofors RP3<<locked>>90%57,232 psi88%2648 fps100%
Bofors RP5ᴾ<<locked>>100%45,861 psi71%2595 fps96.5%
Bofors RP7<<locked>>94%56,768 psi87%2631 fps99%
Hodgdon Benchmark<<locked>>82%55,434 psi85%2536 fps100%
Hodgdon BL-C2<<locked>>84%57,159 psi88%2635 fps100%
Hodgdon H380<<locked>>90%57,798 psi89%2664 fps100%
Hodgdon H414<<locked>>96%57,972 psi89%2726 fps99.5%
Hodgdon H4350<<locked>>94%58,508 psi90%2690 fps98.8%
Hodgdon H4895<<locked>>84%55,564 psi85%2615 fps100%
Hodgdon Hybrid 100Vᴾ<<locked>>100%56,449 psi87%2651 fps100%
Hodgdon LEVERevolution<<locked>>86%55,521 psi85%2651 fps100%
Hodgdon Superformance<<locked>>96%58,653 psi90%2769 fps99.4%
Hodgdon TrailBossᴾ<<locked>>100%35,868 psi55%1578 fps100%
Hodgdon VARGET<<locked>>86%56,753 psi87%2615 fps100%
IMR 3031<<locked>>84%55,898 psi86%2589 fps100%
IMR 4064<<locked>>88%55,767 psi86%2595 fps100%
IMR 4166 Enduron<<locked>>86%55,230 psi85%2582 fps99.1%
IMR 4350<<locked>>98%57,450 psi88%2657 fps99.1%
IMR 4451 Enduron<<locked>>92%55,288 psi85%2612 fps99.1%
IMR 4831<<locked>>98%55,579 psi86%2661 fps100%
IMR 4895<<locked>>88%58,378 psi90%2677 fps100%
IMR 4955 Enduronᴾ<<locked>>100%53,084 psi82%2598 fps95.9%
IMR 8208 XBR<<locked>>84%57,377 psi88%2602 fps100%
Lovex D073.6<<locked>>84%54,810 psi84%2579 fps100%
Lovex S060<<locked>>86%57,682 psi89%2582 fps100%
Lovex S062<<locked>>88%55,564 psi85%2589 fps100%
Lovex S065<<locked>>96%58,233 psi90%2651 fps99.9%
Lovex S070<<locked>>96%55,767 psi86%2641 fps99.3%
Lovex S071ᴾ<<locked>>100%37,565 psi58%2379 fps96.8%
Norma 201<<locked>>86%57,087 psi88%2598 fps100%
Norma 202<<locked>>86%57,943 psi89%2595 fps100%
Norma 203B<<locked>>88%56,130 psi86%2641 fps100%
Norma 204<<locked>>98%58,349 psi90%2713 fps98.4%
Norma MRPᴾ<<locked>>100%48,327 psi74%2667 fps98.4%
Norma URP<<locked>>98%57,914 psi89%2710 fps100%
Ramshot Big Game<<locked>>88%56,942 psi88%2667 fps100%
Ramshot Hunter<<locked>>98%56,565 psi87%2713 fps99.8%
Ramshot TAC<<locked>>84%57,566 psi89%2635 fps99.9%
Ramshot Wild Boar<<locked>>84%57,450 psi88%2644 fps100%
Ramshot X-Terminator<<locked>>82%58,073 psi89%2608 fps100%
ReloadSwiss RS 14ᴾ<<locked>>100%36,448 psi56%1617 fps100%
ReloadSwiss RS 50<<locked>>90%58,001 psi89%2651 fps99.7%
ReloadSwiss RS 52<<locked>>86%58,015 psi89%2720 fps100%
ReloadSwiss RS 60<<locked>>92%57,377 psi88%2746 fps100%
ReloadSwiss RS 62<<locked>>96%55,129 psi85%2700 fps100%
ReloadSwiss RS 70<<locked>>98%58,059 psi89%2779 fps100%
Rottweil R 901<<locked>>84%57,682 psi89%2569 fps100%
Rottweil R 902<<locked>>88%57,566 psi89%2595 fps100%
Rottweil R 903<<locked>>92%57,101 psi88%2638 fps100%
Rottweil R 904ᴾ<<locked>>100%55,201 psi85%2635 fps96.9%
Rottweil R 905ᴾ<<locked>>100%51,271 psi79%2635 fps97.6%
Rottweil R 907<<locked>>94%56,768 psi87%2631 fps99%
Shooters World Long Rifle<<locked>>96%58,233 psi90%2651 fps99.9%
Shooters World Match Rifle<<locked>>84%54,810 psi84%2579 fps100%
Shooters World Precision<<locked>>88%55,564 psi85%2589 fps100%
Shooters World SW4350<<locked>>96%55,767 psi86%2641 fps99.3%
SNPE Vectan SP 11<<locked>>90%55,201 psi85%2651 fps100%
SNPE Vectan SP 7<<locked>>84%56,347 psi87%2615 fps100%
SNPE Vectan SP 9<<locked>>86%57,087 psi88%2631 fps100%
SNPE Vectan Tubal 3000<<locked>>86%58,421 psi90%2530 fps100%
SNPE Vectan Tubal 5000<<locked>>90%55,608 psi86%2493 fps100%
SNPE Vectan Tubal 7000<<locked>>96%58,668 psi90%2612 fps99.4%
SNPE Vectan Tubal 8000ᴾ<<locked>>100%50,778 psi78%2631 fps97.5%
Somchem S321<<locked>>82%58,668 psi90%2635 fps100%
Somchem S335<<locked>>86%57,812 psi89%2530 fps100%
Somchem S341<<locked>>84%55,869 psi86%2602 fps100%
Somchem S355<<locked>>92%57,203 psi88%2635 fps100%
Somchem S361ᴾ<<locked>>100%57,116 psi88%2631 fps96.4%
Somchem S365ᴾ<<locked>>100%56,405 psi87%2707 fps100%
Somchem S385ᴾ<<locked>>100%51,880 psi80%2615 fps98.4%
Vihtavuori N130<<locked>>82%58,117 psi89%2490 fps100%
Vihtavuori N133<<locked>>86%58,784 psi90%2513 fps100%
Vihtavuori N135<<locked>>88%57,986 psi89%2556 fps100%
Vihtavuori N140<<locked>>88%58,407 psi90%2572 fps100%
Vihtavuori N150<<locked>>94%58,581 psi90%2612 fps100%
Vihtavuori N160<<locked>>96%56,579 psi87%2654 fps100%
Vihtavuori N165ᴾ<<locked>>100%44,541 psi69%2487 fps96.5%
Vihtavuori N530<<locked>>84%58,088 psi89%2605 fps100%
Vihtavuori N540<<locked>>88%56,434 psi87%2575 fps100%
Vihtavuori N550<<locked>>96%55,666 psi86%2664 fps100%
Vihtavuori N555ᴾ<<locked>>100%48,008 psi74%2615 fps100%
Winchester 6.5 StaBALL<<locked>>96%56,753 psi87%2635 fps100%
Winchester 748<<locked>>84%58,566 psi90%2651 fps100%
Winchester 760<<locked>>96%58,305 psi90%2730 fps99.5%
Winchester StaBALL HDᴾ<<locked>>100%38,363 psi59%2572 fps100%
Winchester StaBALL Match<<locked>>86%57,116 psi88%2638 fps100%
Winchester Supreme 780ᴾ<<locked>>100%48,646 psi75%2556 fps96.7%

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

Start Load - Barrel Length: 24"

PowderChargeFRMaxP%V(0)z
Accurate 2015<<locked>>80%52,402 psi81%2457 fps100%
Accurate 2495<<locked>>80%44,744 psi69%2395 fps100%
Accurate 2520<<locked>>80%52,576 psi81%2543 fps100%
Accurate 2700<<locked>>80%43,874 psi67%2392 fps96.5%
Accurate 3100<<locked>>92%34,418 psi53%2313 fps95.8%
Accurate 4064<<locked>>80%42,395 psi65%2398 fps100%
Accurate 4350<<locked>>80%31,415 psi48%2254 fps96.5%
ADI AR 2206H<<locked>>80%48,356 psi74%2510 fps100%
ADI AR 2208<<locked>>80%41,292 psi64%2379 fps99.3%
ADI AR 2209<<locked>>94%43,918 psi68%2503 fps95.5%
ADI Benchmark 8208<<locked>>80%50,488 psi78%2510 fps100%
Alliant AR-Comp<<locked>>80%51,735 psi80%2484 fps100%
Alliant Power Pro 2000-MR<<locked>>80%44,454 psi68%2562 fps99.8%
Alliant Power Pro Varmint<<locked>>94%43,758 psi67%2507 fps95.6%
Alliant Reloder- TS 15.5<<locked>>80%41,133 psi63%2402 fps99.9%
Alliant Reloder-15<<locked>>80%43,903 psi68%2457 fps99.7%
Alliant Reloder-16<<locked>>80%31,778 psi49%2274 fps96.8%
Alliant Reloder-1749.8 gr80%35,621 psi55%2392 fps99.3%
Alliant Reloder-19<<locked>>94%43,207 psi66%2497 fps95.5%
Alliant Reloder-22<<locked>>98%42,917 psi66%2539 fps95.6%
Alliant Reloder-23<<locked>>84%25,846 psi40%2142 fps95.6%
Alliant Reloder-25<<locked>>96%33,214 psi51%2349 fps95.6%
Alliant Reloder-26<<locked>>88%31,560 psi49%2356 fps95.9%
Baschieri & Pellagri 107<<locked>>80%48,066 psi74%2530 fps99.8%
Bofors RP3<<locked>>80%40,901 psi63%2405 fps99.9%
Bofors RP5<<locked>>98%42,917 psi66%2539 fps95.6%
Bofors RP7<<locked>>82%38,856 psi60%2333 fps95.4%
Hodgdon Benchmark<<locked>>80%52,054 psi80%2493 fps100%
Hodgdon BL-C2<<locked>>80%49,734 psi77%2536 fps100%
Hodgdon H380<<locked>>80%41,582 psi64%2415 fps98.7%
Hodgdon H414<<locked>>82%36,260 psi56%2359 fps95.2%
Hodgdon H4350<<locked>>84%42,395 psi65%2434 fps95.6%
Hodgdon H4895<<locked>>80%48,834 psi75%2520 fps100%
Hodgdon Hybrid 100V<<locked>>80%29,182 psi45%2182 fps97.5%
Hodgdon LEVERevolution<<locked>>80%45,368 psi70%2507 fps100%
Hodgdon Superformance55.2 gr84%37,942 psi58%2421 fps95.2%
Hodgdon TrailBoss<<locked>>80%26,716 psi41%1407 fps100%
Hodgdon VARGET<<locked>>80%46,978 psi72%2477 fps100%
IMR 3031<<locked>>80%49,327 psi76%2503 fps100%
IMR 4064<<locked>>80%43,410 psi67%2411 fps99.7%
IMR 4166 Enduron<<locked>>80%45,643 psi70%2431 fps97.7%
IMR 4350<<locked>>86%39,291 psi60%2365 fps95.5%
IMR 4451 Enduron<<locked>>80%38,145 psi59%2320 fps95.6%
IMR 4831<<locked>>80%30,603 psi47%2221 fps96.3%
IMR 4895<<locked>>80%45,034 psi69%2484 fps99.9%
IMR 4955 Enduron<<locked>>98%49,763 psi77%2546 fps95.1%
IMR 8208 XBR<<locked>>80%50,488 psi78%2510 fps100%
Lovex D073.6<<locked>>80%48,022 psi74%2487 fps100%
Lovex S060<<locked>>80%48,211 psi74%2451 fps100%
Lovex S062<<locked>>80%43,323 psi67%2408 fps100%
Lovex S065<<locked>>80%35,404 psi54%2270 fps96.4%
Lovex S070<<locked>>82%35,824 psi55%2297 fps95.3%
Lovex S071<<locked>>96%32,837 psi51%2280 fps95.2%
Norma 201<<locked>>80%47,253 psi73%2461 fps100%
Norma 202<<locked>>80%47,950 psi74%2464 fps100%
Norma 203B<<locked>>80%43,294 psi67%2448 fps99.8%
Norma 204<<locked>>90%44,396 psi68%2497 fps95.6%
Norma MRP<<locked>>92%36,637 psi56%2441 fps95%
Norma URP<<locked>>80%31,850 psi49%2260 fps96.5%
Ramshot Big Game<<locked>>80%43,178 psi66%2464 fps99.8%
Ramshot Hunter<<locked>>82%33,170 psi51%2297 fps95%
Ramshot TAC<<locked>>80%50,618 psi78%2536 fps99.5%
Ramshot Wild Boar<<locked>>80%50,328 psi77%2546 fps100%
Ramshot X-Terminator<<locked>>80%54,346 psi84%2559 fps100%
ReloadSwiss RS 14<<locked>>80%27,079 psi42%1444 fps100%
ReloadSwiss RS 50<<locked>>80%41,945 psi65%2402 fps97.5%
ReloadSwiss RS 52<<locked>>80%47,108 psi72%2562 fps99.9%
ReloadSwiss RS 60<<locked>>80%37,942 psi58%2444 fps100%
ReloadSwiss RS 62<<locked>>80%31,256 psi48%2274 fps96.1%
ReloadSwiss RS 7050.5 gr80%31,082 psi48%2274 fps95%
Rottweil R 901<<locked>>80%51,300 psi79%2487 fps100%
Rottweil R 902<<locked>>80%44,889 psi69%2418 fps100%
Rottweil R 903<<locked>>80%38,334 psi59%2352 fps99.6%
Rottweil R 904<<locked>>96%48,356 psi74%2533 fps95.5%
Rottweil R 905<<locked>>94%41,727 psi64%2477 fps95.3%
Rottweil R 907<<locked>>82%38,856 psi60%2333 fps95.4%
Shooters World Long Rifle<<locked>>80%35,404 psi54%2270 fps96.4%
Shooters World Match Rifle<<locked>>80%48,022 psi74%2487 fps100%
Shooters World Precision<<locked>>80%43,323 psi67%2408 fps100%
Shooters World SW4350<<locked>>82%35,824 psi55%2297 fps95.3%
SNPE Vectan SP 11<<locked>>80%39,581 psi61%2405 fps99.4%
SNPE Vectan SP 7<<locked>>80%48,921 psi75%2510 fps99.6%
SNPE Vectan SP 9<<locked>>80%46,963 psi72%2487 fps100%
SNPE Vectan Tubal 3000<<locked>>80%48,675 psi75%2408 fps100%
SNPE Vectan Tubal 5000<<locked>>80%40,727 psi63%2290 fps100%
SNPE Vectan Tubal 7000<<locked>>82%36,883 psi57%2264 fps95.4%
SNPE Vectan Tubal 8000<<locked>>94%41,336 psi64%2470 fps95.2%
Somchem S321<<locked>>80%55,071 psi85%2585 fps100%
Somchem S335<<locked>>80%48,124 psi74%2405 fps100%
Somchem S341<<locked>>80%48,892 psi75%2507 fps100%
Somchem S355<<locked>>80%39,059 psi60%2356 fps99.6%
Somchem S361<<locked>>98%53,229 psi82%2579 fps95.6%
Somchem S365<<locked>>80%28,543 psi44%2221 fps98.6%
Somchem S385<<locked>>92%39,755 psi61%2411 fps95.7%
Vihtavuori N130<<locked>>80%54,781 psi84%2451 fps100%
Vihtavuori N133<<locked>>80%49,182 psi76%2395 fps100%
Vihtavuori N135<<locked>>80%45,034 psi69%2392 fps100%
Vihtavuori N140<<locked>>80%45,295 psi70%2402 fps100%
Vihtavuori N150<<locked>>80%37,173 psi57%2297 fps99.9%
Vihtavuori N160<<locked>>80%33,214 psi51%2264 fps96.9%
Vihtavuori N165<<locked>>98%41,640 psi64%2434 fps95.7%
Vihtavuori N530<<locked>>80%50,937 psi78%2510 fps100%
Vihtavuori N540<<locked>>80%43,714 psi67%2398 fps100%
Vihtavuori N550<<locked>>80%32,764 psi50%2264 fps96.6%
Vihtavuori N555<<locked>>84%27,862 psi43%2208 fps95.7%
Winchester 6.5 StaBALL<<locked>>80%32,895 psi51%2244 fps98.8%
Winchester 748<<locked>>80%51,111 psi79%2556 fps100%
Winchester 760<<locked>>82%36,463 psi56%2362 fps95.3%
Winchester StaBALL HD<<locked>>88%25,846 psi40%2218 fps96.3%
Winchester StaBALL Match<<locked>>80%46,572 psi72%2490 fps100%
Winchester Supreme 780<<locked>>96%42,134 psi65%2448 fps95%

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 111 powders for .300 Rem. SA Ultra Mag. loaded with the .308 | 200gr | Reichenberg Subsonic. ReloadSwiss RS 70 delivers the highest muzzle velocity at 2,779 fps; across all powders the maximum-charge window runs from 1,578 fps to 2,779 fps. Accurate 3100 gives the best case fill at 100 %, and 111 of the 111 powders fall inside the usable 80–100 % fill window.

Relative to the caliber's maximum pressure (448 MPa), the top charges use 55–90 %, leaving at least 10 % headroom. The 200.0 gr projectile in 0.308" calls for a 1:13.0 twist; slower twists will usually not stabilise this weight. Accurate 3100, ADI AR 2209, Alliant Power Pro Varmint 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. ReloadSwiss RS 70, Hodgdon Superformance, Alliant Reloder-17 rank at the top here: for .300 Rem. SA Ultra Mag. with the .308 | 200gr | Reichenberg Subsonic 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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