Load data for .458 Win.Mag. + .458 | 600gr | Barnes RNSP

.458 Win.Mag. cartridge drawing
Barnes logo

Load Specifications

Bullet Manufacturer:Barnes
Bullet Weight:600 gr
Bullet Diameter:0.458"
Bullet Length:<<locked>>
Case Length (l3):2.5"
Cartridge Length (C.O.L.):<<locked>>
Case Capacity:95 Grains of Water
Primer Size:Large Rifle Magnum (LRM)
Barrel Length:24"
Max. allowed Pressure:62,366 psi
Recommended Twist Rate:1:6.0

Load data in caliber .458 Win.Mag. with .458 | 600gr | Barnes RNSP bullet and 92 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Hodgdon CFE223, Alliant Power Pro 1200-R and Somchem S321.

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: 24"

PowderChargeFRMaxP%V(0)z
Accurate 1680<<locked>>84%53,359 psi86%1699 fps100%
Accurate 2015<<locked>>98%54,708 psi88%1768 fps100%
Accurate 2200<<locked>>88%53,505 psi86%1804 fps98.6%
Accurate 2230<<locked>>88%53,766 psi86%1814 fps98.9%
Accurate 2460<<locked>>94%53,374 psi86%1791 fps100%
Accurate 2495ᴾ<<locked>>100%45,948 psi74%1749 fps100%
Accurate 2520<<locked>>98%53,650 psi86%1827 fps100%
Accurate 4064ᴾ<<locked>>100%42,757 psi69%1742 fps100%
Accurate LT-30<<locked>>90%54,288 psi87%1713 fps100%
Accurate LT-32<<locked>>90%54,810 psi88%1726 fps100%
ADI AR 2206Hᴾ<<locked>>100%53,447 psi86%1827 fps99.2%
ADI AR 2207<<locked>>88%54,752 psi88%1726 fps100%
ADI AR 2208ᴾ<<locked>>100%45,498 psi73%1729 fps97.4%
ADI AR 2219<<locked>>92%56,333 psi90%1824 fps100%
ADI Benchmark 8208<<locked>>98%53,432 psi86%1801 fps99.7%
Alliant AR-Compᴾ<<locked>>100%54,346 psi87%1818 fps100%
Alliant Power Pro 1200-R<<locked>>94%54,259 psi87%1867 fps99.7%
Alliant Power Pro 2000-MRᴾ<<locked>>100%49,893 psi80%1857 fps97.9%
Alliant Reloder- TS 15.5ᴾ<<locked>>100%42,931 psi69%1739 fps98.6%
Alliant Reloder-10x<<locked>>94%55,259 psi89%1778 fps100%
Alliant Reloder-15ᴾ<<locked>>100%47,108 psi76%1781 fps98%
Alliant Reloder-17ᴾ<<locked>>100%38,653 psi62%1726 fps96.7%
Alliant Reloder-7<<locked>>88%56,144 psi90%1739 fps100%
Baschieri & Pellagri 106<<locked>>92%56,028 psi90%1749 fps100%
Baschieri & Pellagri 107ᴾ<<locked>>100%53,040 psi85%1837 fps98.3%
Bofors RP3ᴾ<<locked>>100%42,163 psi68%1742 fps98.6%
Hodgdon Benchmark<<locked>>96%53,272 psi85%1765 fps99.9%
Hodgdon BL-C2ᴾ<<locked>>100%54,259 psi87%1857 fps100%
Hodgdon CFE223<<locked>>96%53,272 psi85%1883 fps98.9%
Hodgdon H322<<locked>>94%54,505 psi87%1808 fps100%
Hodgdon H335<<locked>>94%55,564 psi89%1831 fps100%
Hodgdon H380ᴾ<<locked>>100%44,904 psi72%1749 fps96.2%
Hodgdon H4198<<locked>>86%53,185 psi85%1716 fps100%
Hodgdon H4895ᴾ<<locked>>100%53,722 psi86%1834 fps99.5%
Hodgdon LEVERevolutionᴾ<<locked>>100%48,312 psi77%1818 fps99.3%
Hodgdon TrailBossᴾ<<locked>>100%33,127 psi53%1010 fps100%
Hodgdon VARGETᴾ<<locked>>100%52,315 psi84%1804 fps99.3%
IMR 3031ᴾ<<locked>>100%51,416 psi82%1824 fps100%
IMR 4064ᴾ<<locked>>100%47,790 psi77%1745 fps98%
IMR 4198<<locked>>92%53,403 psi86%1722 fps100%
IMR 4227<<locked>>82%53,301 psi85%1667 fps100%
IMR 4895ᴾ<<locked>>100%48,182 psi77%1804 fps98.7%
IMR 8208 XBR<<locked>>98%53,432 psi86%1801 fps99.7%
Lovex D073.4<<locked>>88%54,172 psi87%1801 fps100%
Lovex D073.5<<locked>>94%53,287 psi85%1798 fps100%
Lovex D073.6ᴾ<<locked>>100%50,850 psi82%1811 fps100%
Lovex S053<<locked>>84%55,288 psi89%1657 fps100%
Lovex S060ᴾ<<locked>>100%55,245 psi89%1781 fps99.2%
Lovex S062ᴾ<<locked>>100%46,369 psi74%1749 fps99.3%
Norma 200<<locked>>90%55,709 psi89%1762 fps100%
Norma 201ᴾ<<locked>>100%52,170 psi84%1791 fps99.7%
Norma 202ᴾ<<locked>>100%52,098 psi84%1801 fps100%
Norma 203Bᴾ<<locked>>100%46,108 psi74%1775 fps98.4%
Ramshot Big Gameᴾ<<locked>>100%46,760 psi75%1788 fps98.1%
Ramshot TAC<<locked>>98%54,476 psi87%1811 fps97.1%
Ramshot Wild Boarᴾ<<locked>>100%56,043 psi90%1860 fps99.3%
Ramshot X-Terminator<<locked>>96%55,622 psi89%1808 fps99.1%
ReloadSwiss RS 14ᴾ<<locked>>100%33,257 psi53%1037 fps100%
ReloadSwiss RS 36<<locked>>82%53,417 psi86%1696 fps100%
ReloadSwiss RS 40<<locked>>94%53,896 psi86%1801 fps100%
ReloadSwiss RS 52ᴾ<<locked>>100%49,588 psi80%1854 fps98.4%
ReloadSwiss RS 60ᴾ<<locked>>100%41,365 psi66%1772 fps99.4%
Rottweil R 901<<locked>>98%53,388 psi86%1785 fps100%
Rottweil R 902ᴾ<<locked>>100%49,197 psi79%1759 fps99.5%
Rottweil R 903ᴾ<<locked>>100%39,305 psi63%1699 fps97.8%
Shooters World AR Plus<<locked>>88%54,172 psi87%1801 fps100%
Shooters World Match Rifleᴾ<<locked>>100%50,850 psi82%1811 fps100%
Shooters World Precisionᴾ<<locked>>100%46,369 psi74%1749 fps99.3%
Shooters World Tactical Rifle<<locked>>92%54,665 psi88%1781 fps99.6%
SNPE Vectan BA6 1/2<<locked>>88%55,680 psi89%1552 fps100%
SNPE Vectan SP 10<<locked>>90%53,258 psi85%1804 fps100%
SNPE Vectan SP 11ᴾ<<locked>>100%42,322 psi68%1742 fps97.3%
SNPE Vectan SP 3<<locked>>94%56,391 psi90%1785 fps100%
SNPE Vectan SP 7ᴾ<<locked>>100%55,172 psi88%1824 fps97.7%
SNPE Vectan SP 9ᴾ<<locked>>100%51,866 psi83%1811 fps99%
SNPE Vectan Tubal 3000ᴾ<<locked>>100%55,883 psi90%1762 fps100%
SNPE Vectan Tubal 5000ᴾ<<locked>>100%45,049 psi72%1677 fps100%
Somchem S321<<locked>>96%54,636 psi88%1834 fps99.9%
Somchem S335ᴾ<<locked>>100%53,853 psi86%1762 fps100%
Somchem S341ᴾ<<locked>>100%54,273 psi87%1824 fps99.1%
Somchem S355ᴾ<<locked>>100%40,959 psi66%1706 fps97.8%
Vihtavuori N120<<locked>>88%54,766 psi88%1690 fps100%
Vihtavuori N130<<locked>>96%55,680 psi89%1742 fps100%
Vihtavuori N133ᴾ<<locked>>100%55,056 psi88%1752 fps100%
Vihtavuori N135ᴾ<<locked>>100%47,137 psi76%1742 fps100%
Vihtavuori N140ᴾ<<locked>>100%49,313 psi79%1755 fps100%
Vihtavuori N150ᴾ<<locked>>100%39,407 psi63%1670 fps98.6%
Vihtavuori N530<<locked>>98%54,230 psi87%1804 fps99.8%
Vihtavuori N540ᴾ<<locked>>100%47,572 psi76%1759 fps100%
Winchester 6.5 StaBALLᴾ<<locked>>100%36,883 psi59%1624 fps95.9%
Winchester 748ᴾ<<locked>>100%55,535 psi89%1867 fps100%
Winchester StaBALL Matchᴾ<<locked>>100%50,879 psi82%1818 fps99.3%

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

Start Load - Barrel Length: 24"

PowderChargeFRMaxP%V(0)z
Accurate 1680<<locked>>80%47,094 psi76%1644 fps100%
Accurate 2015<<locked>>80%31,720 psi51%1522 fps99.9%
Accurate 2200<<locked>>80%41,307 psi66%1667 fps96.4%
Accurate 2230<<locked>>80%40,683 psi65%1673 fps96.7%
Accurate 2460<<locked>>80%33,678 psi54%1575 fps98.8%
Accurate 2495<<locked>>80%24,033 psi39%1457 fps99%
Accurate 2520<<locked>>80%29,283 psi47%1539 fps97.4%
Accurate 4064<<locked>>80%22,887 psi37%1440 fps96.2%
Accurate LT-30<<locked>>80%40,451 psi65%1575 fps100%
Accurate LT-32<<locked>>80%40,843 psi65%1585 fps99.4%
ADI AR 2206H<<locked>>84%32,866 psi53%1575 fps95%
ADI AR 2207<<locked>>80%43,192 psi69%1621 fps100%
ADI AR 2208<<locked>>92%35,940 psi58%1604 fps95%
ADI AR 2219<<locked>>80%37,985 psi61%1637 fps99.9%
ADI Benchmark 8208<<locked>>80%30,806 psi49%1522 fps95.7%
Alliant AR-Comp<<locked>>80%28,877 psi46%1532 fps100%
Alliant Power Pro 1200-R45.2 gr80%34,621 psi56%1634 fps96.6%
Alliant Power Pro 2000-MR<<locked>>94%41,075 psi66%1745 fps95.8%
Alliant Reloder- TS 15.5<<locked>>88%29,878 psi48%1552 fps95.1%
Alliant Reloder-10x<<locked>>80%36,434 psi58%1588 fps100%
Alliant Reloder-15<<locked>>90%34,708 psi56%1624 fps95.1%
Alliant Reloder-17<<locked>>96%34,069 psi55%1654 fps95%
Alliant Reloder-7<<locked>>80%44,135 psi71%1627 fps100%
Baschieri & Pellagri 106<<locked>>80%38,508 psi62%1578 fps100%
Baschieri & Pellagri 107<<locked>>90%38,508 psi62%1670 fps95.2%
Bofors RP3<<locked>>90%30,414 psi49%1581 fps95.6%
Hodgdon Benchmark<<locked>>80%33,286 psi53%1529 fps97.1%
Hodgdon BL-C2<<locked>>80%28,094 psi45%1529 fps95.6%
Hodgdon CFE22351.8 gr84%35,882 psi58%1667 fps95.1%
Hodgdon H322<<locked>>80%34,882 psi56%1594 fps99.7%
Hodgdon H335<<locked>>80%34,954 psi56%1608 fps99.2%
Hodgdon H380<<locked>>98%41,930 psi67%1716 fps95.5%
Hodgdon H4198<<locked>>80%44,614 psi72%1631 fps100%
Hodgdon H4895<<locked>>82%31,038 psi50%1552 fps95.1%
Hodgdon LEVERevolution<<locked>>86%31,386 psi50%1588 fps95.4%
Hodgdon TrailBoss<<locked>>80%24,526 psi39%899 fps100%
Hodgdon VARGET<<locked>>84%32,213 psi52%1555 fps95.2%
IMR 3031<<locked>>80%27,717 psi44%1526 fps99%
IMR 4064<<locked>>90%35,302 psi57%1594 fps95.1%
IMR 4198<<locked>>80%38,029 psi61%1568 fps100%
IMR 4227<<locked>>80%50,343 psi81%1640 fps100%
IMR 4895<<locked>>88%33,170 psi53%1611 fps95.4%
IMR 8208 XBR<<locked>>80%30,806 psi49%1522 fps95.7%
Lovex D073.4<<locked>>80%41,278 psi66%1670 fps99.5%
Lovex D073.5<<locked>>80%33,330 psi53%1572 fps97.7%
Lovex D073.6<<locked>>80%26,281 psi42%1496 fps96.3%
Lovex S053<<locked>>80%49,501 psi79%1608 fps100%
Lovex S060<<locked>>84%34,635 psi56%1545 fps95.4%
Lovex S062<<locked>>84%28,631 psi46%1506 fps95.1%
Norma 200<<locked>>80%40,944 psi66%1624 fps100%
Norma 201<<locked>>80%28,456 psi46%1486 fps95%
Norma 202<<locked>>80%28,108 psi45%1503 fps97.6%
Norma 203B<<locked>>90%33,939 psi54%1617 fps95.5%
Ramshot Big Game<<locked>>92%36,347 psi58%1657 fps95.6%
Ramshot TAC<<locked>>92%45,063 psi72%1713 fps95.3%
Ramshot Wild Boar<<locked>>84%33,388 psi54%1594 fps95%
Ramshot X-Terminator<<locked>>82%35,839 psi57%1585 fps95.6%
ReloadSwiss RS 14<<locked>>80%24,555 psi39%922 fps100%
ReloadSwiss RS 36<<locked>>80%50,270 psi81%1667 fps100%
ReloadSwiss RS 40<<locked>>80%34,577 psi55%1581 fps98.3%
ReloadSwiss RS 52<<locked>>90%35,839 psi57%1680 fps95.2%
ReloadSwiss RS 60<<locked>>88%28,543 psi46%1558 fps95.3%
Rottweil R 901<<locked>>80%31,865 psi51%1526 fps98.3%
Rottweil R 902<<locked>>82%28,834 psi46%1490 fps95.1%
Rottweil R 903<<locked>>92%30,385 psi49%1575 fps95.2%
Shooters World AR Plus<<locked>>80%41,278 psi66%1670 fps99.5%
Shooters World Match Rifle<<locked>>80%26,281 psi42%1496 fps96.3%
Shooters World Precision<<locked>>84%28,631 psi46%1506 fps95.1%
Shooters World Tactical Rifle<<locked>>80%36,666 psi59%1585 fps97.1%
SNPE Vectan BA6 1/2<<locked>>80%45,411 psi73%1467 fps100%
SNPE Vectan SP 10<<locked>>80%38,363 psi62%1644 fps99.5%
SNPE Vectan SP 11<<locked>>94%35,244 psi57%1644 fps95.3%
SNPE Vectan SP 3<<locked>>80%36,999 psi59%1591 fps100%
SNPE Vectan SP 7<<locked>>92%42,148 psi68%1690 fps95.3%
SNPE Vectan SP 9<<locked>>86%33,518 psi54%1588 fps95.1%
SNPE Vectan Tubal 3000<<locked>>80%30,574 psi49%1476 fps98.1%
SNPE Vectan Tubal 5000<<locked>>80%24,787 psi40%1394 fps97.2%
Somchem S32148.7 gr80%32,314 psi52%1572 fps96.7%
Somchem S335<<locked>>80%29,704 psi48%1480 fps98.6%
Somchem S341<<locked>>86%34,330 psi55%1591 fps95.2%
Somchem S355<<locked>>92%32,140 psi52%1585 fps95.5%
Vihtavuori N120<<locked>>80%43,279 psi69%1588 fps100%
Vihtavuori N130<<locked>>80%34,838 psi56%1532 fps100%
Vihtavuori N133<<locked>>80%30,342 psi49%1483 fps99.7%
Vihtavuori N135<<locked>>80%25,440 psi41%1463 fps99.2%
Vihtavuori N140<<locked>>80%26,672 psi43%1463 fps97.4%
Vihtavuori N150<<locked>>88%27,296 psi44%1486 fps95%
Vihtavuori N530<<locked>>80%30,400 psi49%1519 fps95.7%
Vihtavuori N540<<locked>>80%25,527 psi41%1457 fps96.3%
Winchester 6.5 StaBALL<<locked>>98%34,693 psi56%1591 fps95.1%
Winchester 748<<locked>>80%29,138 psi47%1539 fps96.1%
Winchester StaBALL Match<<locked>>86%32,561 psi52%1588 fps95.5%

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 92 powders for .458 Win.Mag. loaded with the .458 | 600gr | Barnes RNSP. Hodgdon CFE223 delivers the highest muzzle velocity at 1,883 fps; across all powders the maximum-charge window runs from 1,010 fps to 1,883 fps. Accurate 2495 gives the best case fill at 100 %, and 92 of the 92 powders fall inside the usable 80–100 % fill window.

Relative to the caliber's maximum pressure (430 MPa), the top charges use 53–90 %, leaving at least 10 % headroom. The 600.0 gr projectile in 0.458" calls for a 1:6.0 twist; slower twists will usually not stabilise this weight. Accurate 2495, Accurate 4064, ADI AR 2206H 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. Hodgdon CFE223, Alliant Power Pro 1200-R, Somchem S321 rank at the top here: for .458 Win.Mag. with the .458 | 600gr | Barnes RNSP they combine a high case fill with complete burn and sit in the upper velocity band. Hodgdon TrailBoss, ReloadSwiss RS 14 stay subsonic at start load. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.

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