Load data for .458 Win.Mag. + .458 | 550gr | Impala RNFP KO

Recommended Powder(s): Accurate 2460, Hodgdon H335, Lovex D073.4, SNPE Vectan SP 10, Winchester 748

Load Specifications

(Use the Personalized Load Calculator below to adjust )

Bullet:	.458 \| 550gr \| Impala RNFP KO
Bullet Weight:	550gr \| 35.6g
Bullet Diameter:	0.458" \| 11.63mm
Bullet Length:	1.745" \| 44.3mm
Caliber:	.458 Win.Mag. load data
Case Length (l3):	2.500" \| 63.5mm
Cartridge Length (C.O.L.):	3.290" \| 83.6mm
Seated Depth:	0.955" \| 24.3mm
Shank Seated Depth:	0.955" \| 24.3mm
Case Capacity:	95.0 Grains of Water \| 6.17 cm³
Primer Size:	Large Rifle Magnum (LRM)
Max. allowed Pressure:	62366 psi \| 4300 bar
LID:	LID_B3032_C796
Last updated:	2025-01-01

Load data for 110 loads in caliber .458 Win.Mag. with .458 | 550gr | Impala RNFP KO bullet and 55 powders such as Accurate 2460, Hodgdon H335, Lovex D073.4, SNPE Vectan SP 10, Winchester 748. 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".
A load must fulfill certain criteria to be listed in the default view below - see "powder criteria to fulfill to be listed".

Our load data might deviate from other sources - see the "most common reasons for deviations".

All loads are based on the bullet and case dimensions shown under "Load Specifications" - see "reloading suggestions" if you deviate.

You can set your specifications in the "Personalized Load Calculator".

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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.
Case Length (Inch)
Case Length (mm)
CaseCapacity (GoW)
Min z (%)
Min FR (%)
Max FR*
Barrel Length (Inch)
Barrel Length (cm)
Safety Buffer (%)
.

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 2206H	<<locked>>	97%	43424	70%	**29	95%
ADI AR 2207	<<locked>>	92%	55230	89%	**65	100%
ADI AR 2219	<<locked>>	96%	55941	90%	**47	100%
Accurate 1680	<<locked>>	84%	55361	89%	**68	100%
Accurate 2015	<<locked>>	97%	49400	79%	**52	100%
[Accurate 2200]*	<<locked>>	97%	47123	76%	**26	94%
Accurate 2230	<<locked>>	97%	53345	86%	**01	98%
Accurate 2460 👍	<<locked>>	97%	51880	83%	**04	99%
Accurate 2495	<<locked>>	97%	40335	65%	**29	100%
Accurate 2520	<<locked>>	96%	42279	68%	**45	98%
Alliant AR-Comp	<<locked>>	97%	42946	69%	**45	100%
Alliant Reloder-10x	<<locked>>	97%	53940	86%	**98	100%
[Alliant Reloder-15]*	<<locked>>	97%	38101	61%	**80	93%
Alliant Reloder-7	<<locked>>	91%	55695	89%	**65	100%
Baschieri & Pellagri 106	<<locked>>	95%	55216	89%	**68	100%
[Baschieri & Pellagri 107]*	<<locked>>	97%	42830	69%	**26	93%
Hodgdon BL-C2	<<locked>>	97%	43192	69%	**65	97%
Hodgdon Benchmark	<<locked>>	97%	49472	79%	**42	98%
Hodgdon CFE BLK	<<locked>>	91%	55912	90%	**68	99%
Hodgdon H322	<<locked>>	97%	47921	77%	**75	100%
Hodgdon H335 👍	<<locked>>	96%	55521	89%	**57	100%
Hodgdon H4198	<<locked>>	93%	56014	90%	**59	100%
IMR 3031	<<locked>>	97%	37043	59%	**86	99%
IMR 4198	<<locked>>	97%	54723	88%	**65	100%
IMR 4227	<<locked>>	86%	55390	89%	**13	100%
[IMR 4895]*	<<locked>>	97%	38566	62%	**99	94%
IMR 8208 XBR	<<locked>>	97%	45963	74%	**39	97%
Lovex D073.4 👍	<<locked>>	97%	55419	89%	**21	99%
Lovex D073.5	<<locked>>	97%	51706	83%	**98	99%
Lovex D073.6	<<locked>>	97%	39769	64%	**16	98%
Lovex S053	<<locked>>	87%	55463	89%	**86	100%
Lovex S060	<<locked>>	96%	45136	72%	**86	96%
Norma 200	<<locked>>	93%	55347	89%	**91	100%
Norma 201	<<locked>>	97%	42206	68%	**96	97%
Norma 202	<<locked>>	97%	41945	67%	**16	99%
[Ramshot TAC]*	<<locked>>	97%	46615	75%	**32	93%
Ramshot Wild Boar	<<locked>>	97%	44875	72%	**55	96%
Ramshot X-Terminator	<<locked>>	96%	50647	81%	**68	97%
ReloadSwiss RS 36	<<locked>>	87%	55550	89%	**45	100%
ReloadSwiss RS 40	<<locked>>	97%	51764	83%	**98	99%
Rottweil R 901	<<locked>>	97%	46905	75%	**36	99%
SNPE Vectan SP 10 👍	<<locked>>	95%	55332	89%	**47	100%
[SNPE Vectan SP 7]*	<<locked>>	97%	43671	70%	**13	93%
SNPE Vectan SP 9	<<locked>>	97%	41713	67%	**06	95%
Shooters World Match Rifle	<<locked>>	97%	39769	64%	**16	98%
Shooters World Tactical Rifle	<<locked>>	96%	55100	88%	**98	98%
Somchem S321	<<locked>>	97%	49226	79%	**01	98%
Somchem S335	<<locked>>	97%	43961	70%	**86	99%
Somchem S341	<<locked>>	97%	43178	69%	**13	95%
Vihtavuori N120	<<locked>>	95%	55651	89%	**29	100%
Vihtavuori N130	<<locked>>	97%	49661	80%	**22	100%
Vihtavuori N530	<<locked>>	97%	48660	78%	**75	98%
Vihtavuori N540	<<locked>>	96%	38174	61%	**77	98%
Winchester 748 👍	<<locked>>	97%	47950	77%	**08	99%
Winchester StaBALL Match	<<locked>>	97%	52127	84%	**41	98%

Max Load - Barrel Length: 23.60''

Powder	Charge	FR	MaxP	%	V(0)	z
[ADI AR 2206H]*	<<locked>>	91%	36854	59%	**44	94%
ADI AR 2207	<<locked>>	83%	42627	68%	**44	100%
ADI AR 2219	<<locked>>	83%	37304	60%	**44	99%
Accurate 1680	<<locked>>	81%	50415	81%	**22	100%
Accurate 2015	<<locked>>	89%	39262	63%	**44	100%
[Accurate 2200]*	<<locked>>	91%	39958	64%	**40	92%
Accurate 2230	<<locked>>	88%	39581	63%	**50	95%
Accurate 2460	<<locked>>	87%	38072	61%	**50	97%
Accurate 2495	<<locked>>	90%	33663	54%	**40	99%
Accurate 2520	<<locked>>	90%	34374	55%	**44	97%
Alliant AR-Comp	<<locked>>	90%	34940	56%	**44	100%
Alliant Reloder-10x	<<locked>>	86%	39247	63%	**47	100%
[Alliant Reloder-15]*	<<locked>>	94%	35520	57%	**40	92%
Alliant Reloder-7	<<locked>>	82%	43468	70%	**44	100%
Baschieri & Pellagri 106	<<locked>>	87%	42830	69%	**47	100%
[Baschieri & Pellagri 107]*	<<locked>>	92%	37333	60%	**50	91%
[Hodgdon BL-C2]*	<<locked>>	89%	34548	55%	**44	94%
Hodgdon Benchmark	<<locked>>	90%	40857	66%	**40	97%
Hodgdon CFE BLK	<<locked>>	83%	43874	70%	**44	97%
Hodgdon H322	<<locked>>	88%	37304	60%	**44	99%
Hodgdon H335	<<locked>>	83%	36956	59%	**47	98%
Hodgdon H4198	<<locked>>	85%	44831	72%	**50	99%
IMR 3031	<<locked>>	93%	34040	55%	**40	99%
IMR 4198	<<locked>>	87%	42163	68%	**40	100%
IMR 4227	<<locked>>	81%	47485	76%	**40	100%
[IMR 4895]*	<<locked>>	93%	34693	56%	**44	93%
IMR 8208 XBR	<<locked>>	90%	38116	61%	**40	96%
Lovex D073.4	<<locked>>	86%	38899	62%	**47	97%
Lovex D073.5	<<locked>>	87%	37869	61%	**47	97%
Lovex D073.6	<<locked>>	92%	34374	55%	**44	97%
Lovex S053	<<locked>>	84%	50328	81%	**44	100%
Lovex S060	<<locked>>	93%	41365	66%	**40	95%
Norma 200	<<locked>>	83%	41060	66%	**50	100%
Norma 201	<<locked>>	93%	37985	61%	**40	96%
Norma 202	<<locked>>	92%	36260	58%	**44	98%
[Ramshot TAC]*	<<locked>>	91%	39102	63%	**40	90%
[Ramshot Wild Boar]*	<<locked>>	90%	36579	59%	**44	93%
[Ramshot X-Terminator]*	<<locked>>	89%	39769	64%	**44	94%
ReloadSwiss RS 36	<<locked>>	81%	47065	75%	**67	100%
ReloadSwiss RS 40	<<locked>>	86%	38101	61%	**40	97%
Rottweil R 901	<<locked>>	91%	39421	63%	**47	98%
SNPE Vectan SP 10	<<locked>>	83%	37420	60%	**50	98%
[SNPE Vectan SP 7]*	<<locked>>	93%	38624	62%	**47	91%
[SNPE Vectan SP 9]*	<<locked>>	93%	37014	59%	**44	93%
Shooters World Match Rifle	<<locked>>	92%	34374	55%	**44	97%
Shooters World Tactical Rifle	<<locked>>	86%	40538	65%	**44	96%
Somchem S321	<<locked>>	87%	36666	59%	**44	96%
Somchem S335	<<locked>>	94%	40712	65%	**47	99%
[Somchem S341]*	<<locked>>	93%	38638	62%	**54	93%
Vihtavuori N120	<<locked>>	88%	45571	73%	**44	100%
Vihtavuori N130	<<locked>>	91%	42134	68%	**44	100%
Vihtavuori N530	<<locked>>	88%	37565	60%	**40	96%
Vihtavuori N540	<<locked>>	94%	35607	57%	**40	98%
Winchester 748	<<locked>>	87%	35839	57%	**50	96%
[Winchester StaBALL Match]*	<<locked>>	86%	36187	58%	**44	94%

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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