Load data for .450 N.E. 3 1/4'' + .458 | 420gr | Impala RNFP KO
Recommended Powder(s): ReloadSwiss RS 52
Load Specifications
(Use the Personalized Load Calculator below to adjust )
Bullet: | .458 | 420gr | Impala RNFP KO |
Bullet Weight: | 420gr | 27.2g |
Bullet Diameter: | 0.458" | 11.63mm |
Bullet Length: | 1.359" | 34.5mm |
Caliber: | .450 N.E. 3 1/4'' load data |
Case Length (l3): | 3.250" | 82.5mm |
Cartridge Length (C.O.L.): | 3.891" | 98.8mm |
Seated Depth: | 0.718" | 18.2mm |
Shank Seated Depth: | 0.718" | 18.2mm |
Case Capacity: | 136.0 Grains of Water | 8.83 cm³ |
Primer Size: | Large Rifle Magnum (LRM) |
Max. allowed Pressure: | 44237 psi | 3050 bar |
LID: | LID_B3030_C765 |
Last updated: | 2025-02-02 |
Load data for 98 loads in caliber .450 N.E. 3 1/4'' with .458 | 420gr | Impala RNFP KO bullet and 49 powders such as ReloadSwiss RS 52. The key underlying parameters are shown in the table above.
Important Notice: DO NOT go below Minimum Charge or above Maximum Charge unless there are reasons. Since xxlreloading.com has no control over the equipment and components used by the customer and the data used in connection with the website, any responsibility and liability for the results achieved is rejected. Also see our Terms of Service.
Questions regarding the load data: Please read the information in the next tab "Explanations".
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Our default view only displays powders/loads that fulfill certain criteria: Max pressure of a load <=90% of Max. Standardized Pressure. Fill Rate (Min FR): >80% and <100% for rife loads, >60% and <100% for pistol loads. Min. Propellant Combustion (Min z): >90% for rifle loads , >80% for pistol/revolver loads. Relax these criteria at your own risk to potentially get more powders shown in the load tables.
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Click on the desired row in the tables below to add a specific load / powder to your Diary and manage there.
Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
ADI AR 2208 | 86% | 90% | 96% | |||
Accurate 4064 | 85% | 89% | 100% | |||
Accurate 4350 | 96% | 89% | 95% | |||
Alliant Reloder- TS 15.5 | 87% | 90% | 98% | |||
Alliant Reloder-15 | 84% | 89% | 96% | |||
Alliant Reloder-16 | 95% | 90% | 95% | |||
Alliant Reloder-17 | 91% | 90% | 97% | |||
Alliant Reloder-23 | 97% | 68% | 92% | |||
Hodgdon CFE223 | 86% | 90% | 95% | |||
Hodgdon H380 | 86% | 90% | 95% | |||
Hodgdon H414 | 90% | 90% | 92% | |||
Hodgdon Hybrid 100V | 97% | 86% | 97% | |||
Hodgdon LVR | 92% | 90% | 94% | |||
Hodgdon VARGET | 87% | 90% | 96% | |||
IMR 3031 | 84% | 89% | 100% | |||
IMR 4064 | 87% | 90% | 96% | |||
IMR 4166 Enduron | 87% | 90% | 92% | |||
IMR 4451 Enduron | 89% | 90% | 91% | |||
IMR 4831 | 97% | 80% | 94% | |||
IMR 4895 | 84% | 89% | 97% | |||
Lovex S062 | 85% | 89% | 98% | |||
Lovex S065 | 91% | 89% | 93% | |||
Lovex S070 | 93% | 90% | 92% | |||
Norma 203B | 85% | 89% | 97% | |||
Norma URP | 95% | 90% | 95% | |||
Ramshot Big Game | 85% | 90% | 97% | |||
Ramshot Hunter | 96% | 90% | 92% | |||
ReloadSwiss RS 50 | 86% | 90% | 93% | |||
ReloadSwiss RS 52 | 86% | 89% | 99% | |||
ReloadSwiss RS 60 | 92% | 89% | 98% | |||
ReloadSwiss RS 62 | 96% | 90% | 95% | |||
ReloadSwiss RS 70 | 95% | 89% | 93% | |||
Rottweil R 903 | 89% | 90% | 98% | |||
SNPE Vectan SP 11 | 88% | 90% | 97% | |||
SNPE Vectan Tubal 5000 | 86% | 89% | 100% | |||
SNPE Vectan Tubal 7000 | 92% | 90% | 92% | |||
Shooters World Long Rifle | 91% | 89% | 93% | |||
Shooters World Precision | 85% | 89% | 98% | |||
Somchem S355 | 88% | 90% | 97% | |||
Somchem S365 | 97% | 84% | 98% | |||
Vihtavuori N135 | 89% | 90% | 100% | |||
Vihtavuori N140 | 84% | 90% | 100% | |||
Vihtavuori N150 | 94% | 90% | 99% | |||
Vihtavuori N160 | 92% | 89% | 95% | |||
Vihtavuori N540 | 84% | 89% | 100% | |||
Vihtavuori N550 | 92% | 90% | 95% | |||
Vihtavuori N555 | 97% | 71% | 93% | |||
Winchester 6.5 StaBALL | 93% | 89% | 97% | |||
Winchester 760 | 90% | 90% | 92% |
Max Load - Barrel Length: 23.60''
Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
ADI AR 2208 | 81% | 77% | 94% | |||
Accurate 4064 | 81% | 78% | 99% | |||
Accurate 4350 | 85% | 63% | 90% | |||
Alliant Reloder- TS 15.5 | 81% | 75% | 96% | |||
Alliant Reloder-15 | 81% | 81% | 95% | |||
Alliant Reloder-16 | 85% | 67% | 90% | |||
Alliant Reloder-17 | 81% | 65% | 92% | |||
Alliant Reloder-23 | 93% | 61% | 90% | |||
Hodgdon CFE223 | 81% | 77% | 93% | |||
Hodgdon H380 | 81% | 77% | 92% | |||
Hodgdon H414 | 88% | 83% | 90% | |||
Hodgdon Hybrid 100V | 82% | 57% | 90% | |||
Hodgdon LVR | 84% | 70% | 90% | |||
Hodgdon VARGET | 81% | 77% | 94% | |||
IMR 3031 | 81% | 81% | 100% | |||
IMR 4064 | 81% | 76% | 94% | |||
IMR 4166 Enduron | 83% | 82% | 90% | |||
IMR 4451 Enduron | 86% | 83% | 90% | |||
IMR 4831 | 89% | 64% | 90% | |||
IMR 4895 | 81% | 83% | 96% | |||
Lovex S062 | 81% | 81% | 97% | |||
Lovex S065 | 84% | 72% | 90% | |||
Lovex S070 | 89% | 80% | 90% | |||
Norma 203B | 81% | 79% | 95% | |||
Norma URP | 85% | 65% | 90% | |||
Ramshot Big Game | 81% | 78% | 95% | |||
Ramshot Hunter | 91% | 78% | 90% | |||
ReloadSwiss RS 50 | 81% | 77% | 90% | |||
ReloadSwiss RS 52 | 81% | 76% | 97% | |||
ReloadSwiss RS 60 | 81% | 64% | 92% | |||
ReloadSwiss RS 62 | 87% | 68% | 90% | |||
ReloadSwiss RS 70 | 90% | 77% | 90% | |||
Rottweil R 903 | 81% | 70% | 95% | |||
SNPE Vectan SP 11 | 81% | 72% | 94% | |||
SNPE Vectan Tubal 5000 | 81% | 76% | 99% | |||
SNPE Vectan Tubal 7000 | 88% | 79% | 90% | |||
Shooters World Long Rifle | 84% | 72% | 90% | |||
Shooters World Precision | 81% | 81% | 97% | |||
Somchem S355 | 81% | 72% | 95% | |||
Somchem S365 | 81% | 53% | 90% | |||
Vihtavuori N135 | 81% | 70% | 100% | |||
Vihtavuori N140 | 81% | 83% | 99% | |||
Vihtavuori N150 | 81% | 62% | 95% | |||
Vihtavuori N160 | 82% | 66% | 90% | |||
Vihtavuori N540 | 81% | 82% | 99% | |||
Vihtavuori N550 | 82% | 65% | 90% | |||
Vihtavuori N555 | 92% | 62% | 90% | |||
Winchester 6.5 StaBALL | 81% | 62% | 91% | |||
Winchester 760 | 88% | 83% | 90% |
Start Load - Barrel Length: 23.60''
Any powder missing? Then click here.
FR ... fill rate of the cartridge in percent
MaxP ... max. pressure of load in psi or bar
% ... max. pressure of load in percent of the maximum allowed pressure for this caliber
V(0) ... muzzle velocity in feet per second (fps) or meters per second (m/s)
z ... powder burnt in percent
[...] *... not dangerous but load has suboptimal powder burnt with possible characteristics such as extensive muzzle flash or inaccurate loads.
[...] ²... fill rate low - you might want to consider using a filler to ensure proper ignition.
[...] ᴾ... possible press load - work up slowly to this load while watching for signs of excessive pressure.
👍 ... recommended powder/load for this caliber and bullet combination based on its ballistic performance.
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