Load data for .458 Win.Mag. + .458 | 300gr | Barnes X S

Recommended Powder(s):

Load Specifications

(Use the Personalized Load Calculator below to adjust )

Bullet:	.458 \| 300gr \| Barnes X S
Manufacturer SKU:	45802
Bullet Weight:	300gr \| 19.4g
Bullet Diameter:	0.458" \| 11.63mm
Bullet Length:	1.085" \| 27.6mm
Caliber:	.458 Win.Mag. load data
Case Length (l3):	2.500" \| 63.5mm
Cartridge Length (C.O.L.):	3.290" \| 83.6mm
Seated Depth:	0.295" \| 7.5mm
Shank Seated Depth:	0.295" \| 7.5mm
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_B806_C796
Last updated:	2025-01-01

Load data for 104 loads in caliber .458 Win.Mag. with .458 | 300gr | Barnes X S bullet and 52 powder(s). 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 2205	<<locked>>	84%	55985	90%	**10	100%
ADI AR 2207 👍	<<locked>>	96%	56130	90%	**90	100%
ADI AR 2219	<<locked>>	97%	53098	85%	**07	98%
Accurate 1680	<<locked>>	87%	56101	90%	**61	99%
Accurate 2015	<<locked>>	97%	44788	72%	**46	99%
[Accurate 2230]*	<<locked>>	97%	48370	78%	**72	92%
[Accurate 2460]*	<<locked>>	97%	48211	77%	**95	94%
Accurate 2495	<<locked>>	97%	36985	59%	**97	97%
[Accurate 2520]*	<<locked>>	97%	39233	63%	**00	93%
[Accurate 4064]*	<<locked>>	97%	31154	50%	**52	91%
Alliant AR-Comp	<<locked>>	97%	39523	63%	**30	99%
Alliant Reloder-10x 👍	<<locked>>	97%	49284	79%	**35	100%
Alliant Reloder-7 👍	<<locked>>	94%	56115	90%	**64	100%
Baschieri & Pellagri 106	<<locked>>	97%	53592	86%	**08	99%
[Hodgdon Benchmark]*	<<locked>>	97%	46209	74%	**13	93%
Hodgdon CFE BLK	<<locked>>	93%	55347	89%	**12	95%
Hodgdon H322	<<locked>>	97%	44556	71%	**69	96%
Hodgdon H335	<<locked>>	97%	52721	85%	**00	97%
Hodgdon H4198	<<locked>>	96%	55927	90%	**31	98%
[IMR 3031]*	<<locked>>	97%	34809	56%	**25	94%
IMR 4198 👍	<<locked>>	97%	50720	81%	**05	100%
IMR 4227	<<locked>>	89%	55883	90%	**08	100%
[IMR 8208 XBR]*	<<locked>>	97%	42511	68%	**90	91%
Lovex D060	<<locked>>	83%	55434	89%	**41	100%
Lovex D073.4	<<locked>>	97%	50459	81%	**21	95%
[Lovex D073.5]*	<<locked>>	97%	47297	76%	**82	94%
[Lovex D073.6]*	<<locked>>	97%	36332	58%	**34	91%
Lovex S053	<<locked>>	90%	55767	89%	**79	100%
Norma 200 👍	<<locked>>	96%	55419	89%	**00	100%
[Norma 202]*	<<locked>>	97%	38203	61%	**54	93%
ReloadSwiss RS 36	<<locked>>	89%	55347	89%	**38	100%
ReloadSwiss RS 40	<<locked>>	97%	48008	77%	**02	95%
Rottweil R 901	<<locked>>	97%	43468	70%	**07	95%
SNPE Vectan BA6 1/2	<<locked>>	94%	55985	90%	**34	100%
SNPE Vectan SP 10	<<locked>>	97%	53417	86%	**13	97%
SNPE Vectan Tubal 3000	<<locked>>	97%	42453	68%	**34	95%
[SNPE Vectan Tubal 5000]*	<<locked>>	97%	34708	56%	**93	93%
Shooters World Buffalo Rifle	<<locked>>	83%	55434	89%	**41	100%
[Shooters World Match Rifle]*	<<locked>>	97%	36332	58%	**34	91%
[Shooters World Tactical Rifle]*	<<locked>>	97%	52547	84%	**12	93%
[Somchem S321]*	<<locked>>	97%	45107	72%	**72	93%
Somchem S335	<<locked>>	97%	40973	66%	**34	95%
Vihtavuori N110	<<locked>>	84%	55912	90%	**00	100%
Vihtavuori N120	<<locked>>	97%	53925	86%	**15	100%
Vihtavuori N130	<<locked>>	97%	46746	75%	**33	99%
Vihtavuori N133	<<locked>>	97%	38537	62%	**95	97%
[Vihtavuori N135]*	<<locked>>	97%	29501	47%	**54	92%
[Vihtavuori N140]*	<<locked>>	97%	36027	58%	**79	93%
[Vihtavuori N530]*	<<locked>>	97%	44469	71%	**43	92%
[Vihtavuori N540]*	<<locked>>	97%	35940	58%	**95	92%
[Winchester 748]*	<<locked>>	97%	44324	71%	**79	93%
[Winchester StaBALL Match]*	<<locked>>	97%	48660	78%	**21	91%

Max Load - Barrel Length: 23.60''

Powder	Charge	FR	MaxP	%	V(0)	z
ADI AR 2205	<<locked>>	81%	52127	84%	**64	100%
ADI AR 2207	<<locked>>	81%	37376	60%	**92	100%
[ADI AR 2219]*	<<locked>>	81%	32837	53%	**16	92%
Accurate 1680	<<locked>>	81%	46978	75%	**23	98%
[Accurate 2015]*	<<locked>>	81%	29153	47%	**11	94%
[Accurate 2230]*	<<locked>>	93%	42380	68%	**70	90%
[Accurate 2460]*	<<locked>>	87%	35665	57%	**69	90%
[Accurate 2495]*	<<locked>>	81%	23844	38%	**52	91%
[Accurate 2520]*	<<locked>>	91%	33156	53%	**65	90%
[Accurate 4064]*	<<locked>>	93%	28543	46%	**83	90%
[Alliant AR-Comp]*	<<locked>>	81%	25759	41%	**65	94%
Alliant Reloder-10x	<<locked>>	81%	31778	51%	**90	96%
Alliant Reloder-7	<<locked>>	81%	38696	62%	**85	98%
[Baschieri & Pellagri 106]*	<<locked>>	81%	33779	54%	**57	94%
[Hodgdon Benchmark]*	<<locked>>	89%	36956	59%	**36	90%
[Hodgdon CFE BLK]*	<<locked>>	82%	39943	64%	**52	90%
[Hodgdon H322]*	<<locked>>	81%	28834	46%	**08	90%
[Hodgdon H335]*	<<locked>>	81%	32227	52%	**03	90%
[Hodgdon H4198]*	<<locked>>	81%	37260	60%	**06	94%
[IMR 3031]*	<<locked>>	88%	27572	44%	**21	90%
IMR 4198	<<locked>>	81%	33388	54%	**80	97%
IMR 4227	<<locked>>	81%	44280	71%	**38	100%
[IMR 8208 XBR]*	<<locked>>	94%	39682	64%	**38	90%
Lovex D060	<<locked>>	81%	52141	84%	**92	100%
[Lovex D073.4]*	<<locked>>	86%	35969	58%	**62	90%
[Lovex D073.5]*	<<locked>>	88%	35665	57%	**69	90%
[Lovex D073.6]*	<<locked>>	93%	33156	53%	**65	90%
Lovex S053	<<locked>>	81%	43598	70%	**08	100%
Norma 200	<<locked>>	81%	36129	58%	**75	98%
[Norma 202]*	<<locked>>	89%	30995	50%	**83	90%
ReloadSwiss RS 36	<<locked>>	81%	43918	70%	**67	100%
[ReloadSwiss RS 40]*	<<locked>>	85%	34476	55%	**33	90%
[Rottweil R 901]*	<<locked>>	84%	31386	50%	**44	90%
SNPE Vectan BA6 1/2	<<locked>>	81%	40901	66%	**31	100%
[SNPE Vectan SP 10]*	<<locked>>	81%	33330	53%	**33	91%
[SNPE Vectan Tubal 3000]*	<<locked>>	85%	30937	50%	**92	90%
[SNPE Vectan Tubal 5000]*	<<locked>>	90%	29037	47%	**56	90%
Shooters World Buffalo Rifle	<<locked>>	81%	52141	84%	**92	100%
[Shooters World Match Rifle]*	<<locked>>	93%	33156	53%	**65	90%
[Shooters World Tactical Rifle]*	<<locked>>	89%	41640	67%	**28	90%
[Somchem S321]*	<<locked>>	91%	38159	61%	**38	90%
[Somchem S335]*	<<locked>>	83%	28166	45%	**49	90%
Vihtavuori N110	<<locked>>	81%	51184	82%	**44	100%
Vihtavuori N120	<<locked>>	81%	35085	56%	**10	100%
Vihtavuori N130	<<locked>>	81%	30211	48%	**98	95%
[Vihtavuori N133]*	<<locked>>	81%	25527	41%	**70	91%
[Vihtavuori N135]*	<<locked>>	91%	26063	42%	**46	90%
[Vihtavuori N140]*	<<locked>>	90%	30603	49%	**41	90%
[Vihtavuori N530]*	<<locked>>	92%	39233	63%	**41	90%
[Vihtavuori N540]*	<<locked>>	92%	32068	51%	**03	90%
[Winchester 748]*	<<locked>>	92%	37927	61%	**41	90%
[Winchester StaBALL Match]*	<<locked>>	94%	44657	72%	**56	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.

<<locked>>... you need to buy an access license to unlock the data