Load data for 8.5 x 63 + .338 | 210gr | Impala RNFP KO

8.5 x 63 cartridge drawing
Impala Bullets logo

Load Specifications

Bullet Manufacturer:Impala Bullets
Bullet Weight:210 gr
Bullet Diameter:0.338"
Bullet Length:<<locked>>
Case Length (l3):2.48"
Cartridge Length (C.O.L.):<<locked>>
Case Capacity:75.5 Grains of Water
Primer Size:Large Rifle (LR)
Barrel Length:23.62"
Max. allowed Pressure:62,366 psi
Recommended Twist Rate:1:15.0

Load data in caliber 8.5 x 63 with .338 | 210gr | Impala RNFP KO bullet and 93 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Power Pro 2000-MR, ReloadSwiss RS 52 and ReloadSwiss RS 60.

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: 23.62"

PowderChargeFRMaxP%V(0)z
Accurate 2015<<locked>>88%55,927 psi90%2559 fps100%
Accurate 2460<<locked>>84%54,563 psi87%2585 fps100%
Accurate 2495<<locked>>92%54,375 psi87%2585 fps100%
Accurate 2520<<locked>>88%55,767 psi89%2638 fps100%
Accurate 4064<<locked>>94%53,925 psi86%2621 fps100%
Accurate 4350ᴾ<<locked>>100%48,254 psi77%2612 fps97.6%
Accurate LT-30<<locked>>82%54,636 psi88%2497 fps100%
Accurate LT-32<<locked>>82%55,056 psi88%2520 fps100%
ADI AR 2206H<<locked>>90%54,375 psi87%2638 fps99.4%
ADI AR 2208<<locked>>96%54,911 psi88%2628 fps99%
ADI AR 2219<<locked>>82%55,463 psi89%2615 fps100%
ADI Benchmark 8208<<locked>>88%53,505 psi86%2595 fps99.8%
Alliant AR-Comp<<locked>>88%53,577 psi86%2585 fps100%
Alliant Power Pro 1200-R<<locked>>84%55,245 psi89%2694 fps99.7%
Alliant Power Pro 2000-MR<<locked>>92%53,127 psi85%2726 fps98.8%
Alliant Reloder- TS 15.5<<locked>>96%54,433 psi87%2651 fps99.8%
Alliant Reloder-10x<<locked>>84%55,680 psi89%2562 fps100%
Alliant Reloder-15<<locked>>94%55,463 psi89%2674 fps99.2%
Alliant Reloder-16ᴾ<<locked>>100%47,645 psi76%2612 fps97.6%
Alliant Reloder-17ᴾ<<locked>>100%54,549 psi87%2756 fps99.7%
Baschieri & Pellagri 106<<locked>>82%53,867 psi86%2500 fps100%
Baschieri & Pellagri 107<<locked>>90%53,737 psi86%2648 fps98.6%
Bofors RP3<<locked>>96%55,303 psi89%2671 fps99.8%
Hodgdon Benchmark<<locked>>88%55,840 psi90%2585 fps100%
Hodgdon BL-C2<<locked>>90%55,927 psi90%2674 fps100%
Hodgdon CFE223<<locked>>86%53,592 psi86%2703 fps99%
Hodgdon H322<<locked>>84%54,099 psi87%2595 fps100%
Hodgdon H335<<locked>>84%55,288 psi89%2621 fps100%
Hodgdon H380<<locked>>94%53,156 psi85%2628 fps97.9%
Hodgdon H4895<<locked>>90%54,795 psi88%2648 fps99.7%
Hodgdon Hybrid 100Vᴾ<<locked>>100%43,932 psi70%2507 fps98.2%
Hodgdon LEVERevolution<<locked>>92%53,069 psi85%2674 fps99.8%
Hodgdon TrailBossᴾ<<locked>>100%35,389 psi57%1575 fps100%
Hodgdon VARGET<<locked>>92%55,811 psi89%2648 fps99.7%
IMR 3031<<locked>>90%53,983 psi87%2638 fps100%
IMR 4064<<locked>>94%54,752 psi88%2618 fps99.1%
IMR 4166 Enduron<<locked>>92%55,187 psi88%2589 fps95.9%
IMR 4198<<locked>>84%55,332 psi89%2520 fps100%
IMR 4451 Enduron<<locked>>98%54,346 psi87%2608 fps95.7%
IMR 4831ᴾ<<locked>>100%45,977 psi74%2559 fps97.2%
IMR 4895<<locked>>92%53,432 psi86%2654 fps99.3%
IMR 8208 XBR<<locked>>88%53,505 psi86%2595 fps99.8%
Lovex D073.5<<locked>>84%54,331 psi87%2589 fps100%
Lovex D073.6<<locked>>90%53,708 psi86%2621 fps100%
Lovex S060<<locked>>90%54,491 psi87%2572 fps99.4%
Lovex S062<<locked>>94%54,621 psi88%2621 fps99.9%
Lovex S065ᴾ<<locked>>100%53,345 psi86%2602 fps97.1%
Norma 201<<locked>>90%53,867 psi86%2595 fps99.8%
Norma 202<<locked>>90%53,766 psi86%2598 fps100%
Norma 203B<<locked>>94%54,592 psi88%2664 fps99.4%
Norma URPᴾ<<locked>>100%47,935 psi77%2605 fps97.4%
Ramshot Big Game<<locked>>94%54,491 psi87%2680 fps99.3%
Ramshot TAC<<locked>>88%54,012 psi87%2605 fps97.4%
Ramshot Wild Boar<<locked>>88%53,084 psi85%2625 fps99.2%
Ramshot X-Terminator<<locked>>86%54,882 psi88%2598 fps99.3%
ReloadSwiss RS 14ᴾ<<locked>>100%35,621 psi57%1611 fps100%
ReloadSwiss RS 40<<locked>>84%53,476 psi86%2585 fps100%
ReloadSwiss RS 50<<locked>>94%53,476 psi86%2605 fps96.3%
ReloadSwiss RS 52<<locked>>92%55,027 psi88%2730 fps99.2%
ReloadSwiss RS 60<<locked>>98%54,679 psi88%2762 fps100%
ReloadSwiss RS 62ᴾ<<locked>>100%47,659 psi76%2628 fps97.1%
ReloadSwiss RS 70ᴾ<<locked>>100%48,776 psi78%2641 fps96.4%
Rottweil R 901<<locked>>88%55,608 psi89%2589 fps100%
Rottweil R 902<<locked>>92%54,244 psi87%2592 fps99.8%
Rottweil R 903<<locked>>98%54,853 psi88%2657 fps99.7%
Shooters World Long Rifleᴾ<<locked>>100%53,345 psi86%2602 fps97.1%
Shooters World Match Rifle<<locked>>90%53,708 psi86%2621 fps100%
Shooters World Precision<<locked>>94%54,621 psi88%2621 fps99.9%
Shooters World Tactical Rifle<<locked>>82%53,185 psi85%2552 fps99.6%
SNPE Vectan SP 10<<locked>>82%55,883 psi90%2625 fps100%
SNPE Vectan SP 11<<locked>>98%55,970 psi90%2710 fps99.5%
SNPE Vectan SP 3<<locked>>84%56,014 psi90%2575 fps100%
SNPE Vectan SP 7<<locked>>90%55,796 psi89%2635 fps98.1%
SNPE Vectan SP 9<<locked>>92%55,956 psi90%2657 fps99.5%
SNPE Vectan Tubal 3000<<locked>>90%55,158 psi88%2539 fps100%
SNPE Vectan Tubal 5000<<locked>>96%54,650 psi88%2536 fps100%
Somchem S321<<locked>>86%54,795 psi88%2631 fps99.9%
Somchem S335<<locked>>90%54,708 psi88%2543 fps100%
Somchem S341<<locked>>90%54,969 psi88%2628 fps99.3%
Somchem S355<<locked>>98%55,405 psi89%2657 fps99.7%
Somchem S365ᴾ<<locked>>100%43,033 psi69%2559 fps99.2%
Vihtavuori N130<<locked>>86%55,230 psi89%2513 fps100%
Vihtavuori N133<<locked>>90%54,969 psi88%2526 fps100%
Vihtavuori N135<<locked>>94%56,159 psi90%2605 fps100%
Vihtavuori N140<<locked>>92%53,838 psi86%2575 fps100%
Vihtavuori N150<<locked>>98%53,316 psi85%2592 fps99.9%
Vihtavuori N160ᴾ<<locked>>100%50,256 psi81%2602 fps97.7%
Vihtavuori N530<<locked>>88%54,085 psi87%2595 fps99.8%
Vihtavuori N540<<locked>>94%55,448 psi89%2618 fps100%
Vihtavuori N550ᴾ<<locked>>100%49,400 psi79%2608 fps97.4%
Winchester 6.5 StaBALLᴾ<<locked>>100%51,271 psi82%2589 fps99.4%
Winchester 748<<locked>>88%53,272 psi85%2641 fps100%
Winchester StaBALL Match<<locked>>92%55,680 psi89%2667 fps99.7%

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

Start Load - Barrel Length: 23.62"

PowderChargeFRMaxP%V(0)z
Accurate 2015<<locked>>80%44,454 psi71%2395 fps100%
Accurate 2460<<locked>>80%48,182 psi77%2493 fps100%
Accurate 2495<<locked>>80%37,985 psi61%2336 fps100%
Accurate 2520<<locked>>80%43,178 psi69%2451 fps99.7%
Accurate 4064<<locked>>80%35,897 psi58%2320 fps99.4%
Accurate 4350<<locked>>94%39,900 psi64%2467 fps95.5%
Accurate LT-30<<locked>>80%51,677 psi83%2457 fps100%
Accurate LT-32<<locked>>80%52,054 psi83%2477 fps100%
ADI AR 2206H<<locked>>80%40,495 psi65%2402 fps97.1%
ADI AR 2208<<locked>>82%36,767 psi59%2310 fps95.1%
ADI AR 2219<<locked>>80%52,083 psi84%2569 fps100%
ADI Benchmark 8208<<locked>>80%42,322 psi68%2411 fps98.6%
Alliant AR-Comp<<locked>>80%41,640 psi67%2418 fps100%
Alliant Power Pro 1200-R<<locked>>80%48,733 psi78%2592 fps99.1%
Alliant Power Pro 2000-MR51.5 gr82%38,870 psi62%2457 fps95.2%
Alliant Reloder- TS 15.5<<locked>>80%34,113 psi55%2290 fps96.2%
Alliant Reloder-10x<<locked>>80%49,661 psi80%2480 fps100%
Alliant Reloder-15<<locked>>80%36,506 psi59%2339 fps95.3%
Alliant Reloder-16<<locked>>94%40,103 psi64%2464 fps95.4%
Alliant Reloder-17<<locked>>86%35,433 psi57%2388 fps95.7%
Baschieri & Pellagri 106<<locked>>80%50,560 psi81%2457 fps100%
Baschieri & Pellagri 107<<locked>>80%39,088 psi63%2395 fps95.4%
Bofors RP3<<locked>>80%33,663 psi54%2290 fps96.2%
Hodgdon Benchmark<<locked>>80%44,324 psi71%2408 fps99.3%
Hodgdon BL-C2<<locked>>80%40,712 psi65%2431 fps98.8%
Hodgdon CFE223<<locked>>80%44,106 psi71%2546 fps97.4%
Hodgdon H322<<locked>>80%47,950 psi77%2507 fps100%
Hodgdon H335<<locked>>80%48,704 psi78%2530 fps100%
Hodgdon H380<<locked>>86%41,611 psi67%2434 fps95.3%
Hodgdon H4895<<locked>>80%40,814 psi65%2411 fps97.7%
Hodgdon Hybrid 100V<<locked>>92%34,911 psi56%2323 fps95.6%
Hodgdon LEVERevolution<<locked>>80%36,579 psi59%2379 fps97%
Hodgdon TrailBoss<<locked>>80%26,455 psi42%1404 fps100%
Hodgdon VARGET<<locked>>80%39,146 psi63%2369 fps97.2%
IMR 3031<<locked>>80%39,726 psi64%2418 fps100%
IMR 4064<<locked>>80%36,463 psi58%2297 fps95.3%
IMR 4166 Enduron<<locked>>90%51,996 psi83%2543 fps95.3%
IMR 4198<<locked>>80%49,545 psi79%2444 fps100%
IMR 4451 Enduron<<locked>>96%51,184 psi82%2559 fps95%
IMR 4831<<locked>>94%38,406 psi62%2418 fps95.1%
IMR 4895<<locked>>80%37,333 psi60%2369 fps96.3%
IMR 8208 XBR<<locked>>80%42,322 psi68%2411 fps98.6%
Lovex D073.5<<locked>>80%47,935 psi77%2497 fps99.7%
Lovex D073.6<<locked>>80%39,465 psi63%2392 fps99.3%
Lovex S060<<locked>>80%41,104 psi66%2349 fps97.2%
Lovex S062<<locked>>80%36,564 psi59%2310 fps97.4%
Lovex S065<<locked>>94%45,092 psi72%2470 fps95.2%
Norma 201<<locked>>80%40,263 psi65%2369 fps98.2%
Norma 202<<locked>>80%40,030 psi64%2379 fps99.7%
Norma 203B<<locked>>80%35,998 psi58%2329 fps95.8%
Norma URP<<locked>>94%40,176 psi64%2461 fps95.4%
Ramshot Big Game<<locked>>80%35,172 psi56%2333 fps95.1%
Ramshot TAC<<locked>>82%44,889 psi72%2457 fps95.4%
Ramshot Wild Boar<<locked>>80%41,379 psi66%2428 fps97.2%
Ramshot X-Terminator<<locked>>80%45,629 psi73%2454 fps98%
ReloadSwiss RS 14<<locked>>80%26,745 psi43%1440 fps100%
ReloadSwiss RS 40<<locked>>80%47,326 psi76%2493 fps99.9%
ReloadSwiss RS 50<<locked>>90%47,529 psi76%2510 fps95%
ReloadSwiss RS 5248.7 gr80%37,492 psi60%2421 fps95.5%
ReloadSwiss RS 6049.4 gr80%31,357 psi50%2297 fps96.6%
ReloadSwiss RS 62<<locked>>96%42,192 psi68%2526 fps95.7%
ReloadSwiss RS 70<<locked>>98%45,672 psi73%2585 fps95.6%
Rottweil R 901<<locked>>80%44,512 psi71%2418 fps99.9%
Rottweil R 902<<locked>>80%38,406 psi62%2323 fps97.8%
Rottweil R 903<<locked>>80%31,937 psi51%2241 fps95.1%
Shooters World Long Rifle<<locked>>94%45,092 psi72%2470 fps95.2%
Shooters World Match Rifle<<locked>>80%39,465 psi63%2392 fps99.3%
Shooters World Precision<<locked>>80%36,564 psi59%2310 fps97.4%
Shooters World Tactical Rifle<<locked>>80%49,777 psi80%2503 fps99.3%
SNPE Vectan SP 10<<locked>>80%52,649 psi84%2582 fps100%
SNPE Vectan SP 11<<locked>>84%36,695 psi59%2372 fps95.8%
SNPE Vectan SP 3<<locked>>80%49,922 psi80%2493 fps100%
SNPE Vectan SP 7<<locked>>82%43,149 psi69%2431 fps95.6%
SNPE Vectan SP 9<<locked>>80%39,015 psi63%2372 fps96.6%
SNPE Vectan Tubal 3000<<locked>>80%41,510 psi67%2333 fps99.7%
SNPE Vectan Tubal 5000<<locked>>80%34,403 psi55%2211 fps99.4%
Somchem S321<<locked>>80%45,397 psi73%2487 fps99.2%
Somchem S335<<locked>>80%41,118 psi66%2336 fps99.9%
Somchem S341<<locked>>80%39,885 psi64%2382 fps96.8%
Somchem S355<<locked>>80%32,880 psi53%2251 fps95.2%
Somchem S365<<locked>>88%30,487 psi49%2274 fps95.4%
Vihtavuori N130<<locked>>80%46,688 psi75%2395 fps100%
Vihtavuori N133<<locked>>80%41,452 psi66%2329 fps100%
Vihtavuori N135<<locked>>80%37,231 psi60%2320 fps100%
Vihtavuori N140<<locked>>80%37,724 psi60%2320 fps99.6%
Vihtavuori N150<<locked>>80%31,067 psi50%2192 fps96.1%
Vihtavuori N160<<locked>>92%39,595 psi63%2411 fps95%
Vihtavuori N530<<locked>>80%42,264 psi68%2408 fps98.6%
Vihtavuori N540<<locked>>80%36,535 psi59%2310 fps99.1%
Vihtavuori N550<<locked>>94%41,191 psi66%2464 fps95.4%
Winchester 6.5 StaBALL<<locked>>86%33,417 psi54%2251 fps95%
Winchester 748<<locked>>80%41,133 psi66%2444 fps99.1%
Winchester StaBALL Match<<locked>>80%38,159 psi61%2375 fps97.1%

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 93 powders for 8.5 x 63 loaded with the .338 | 210gr | Impala RNFP KO. ReloadSwiss RS 60 delivers the highest muzzle velocity at 2,762 fps; across all powders the maximum-charge window runs from 1,575 fps to 2,762 fps. Accurate 4350 gives the best case fill at 100 %, and 93 of the 93 powders fall inside the usable 80–100 % fill window.

Relative to the caliber's maximum pressure (430 MPa), the top charges use 57–90 %, leaving at least 10 % headroom. The 210.0 gr projectile in 0.338" calls for a 1:15.0 twist; slower twists will usually not stabilise this weight. Accurate 4350, Alliant Reloder-16, Alliant Reloder-17 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 2000-MR, ReloadSwiss RS 52, ReloadSwiss RS 60 rank at the top here: for 8.5 x 63 with the .338 | 210gr | Impala RNFP KO 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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