Load data for .458 Lott + .458 | 300gr | Nosler MZ

Recommended Powder(s): ADI AR 2219, Alliant Reloder-10x, Baschieri & Pellagri 106, Hodgdon H335, Hodgdon H4198

Load Specifications

(Use the Personalized Load Calculator below to adjust )

Bullet:	.458 \| 300gr \| Nosler MZ
Manufacturer SKU:	50300
Bullet Weight:	300gr \| 19.4g
Bullet Diameter:	0.458" \| 11.63mm
Bullet Length:	0.999" \| 25.4mm
Caliber:	.458 Lott load data
Case Length (l3):	2.800" \| 71.1mm
Cartridge Length (C.O.L.):	3.546" \| 90.1mm
Seated Depth:	0.253" \| 6.4mm
Shank Seated Depth:	0.253" \| 6.4mm
Case Capacity:	110.0 Grains of Water \| 7.14 cm³
Primer Size:	Large Rifle Magnum (LRM)
Max. allowed Pressure:	62366 psi \| 4300 bar
LID:	LID_B4208_C790
Last updated:	2025-01-01

Load data for 114 loads in caliber .458 Lott with .458 | 300gr | Nosler MZ bullet and 57 powders such as ADI AR 2219, Alliant Reloder-10x, Baschieri & Pellagri 106, Hodgdon H335, Hodgdon H4198. 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".

Go to the bottom of the "Dashboard " page to set the measure system (imperial vs. metric)
No data yet
C.O.L. (Inch)
C.O.L. (mm)
We recommend you limit powder range to relevant brands to speed up re-calculation of results
Use the Personalized Load Calculator to customize loads to your own specific requirements. Find more details in the help section.

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%	40901	66%	**41	92%
ADI AR 2207	<<locked>>	94%	55666	89%	**05	100%
ADI AR 2219 👍	<<locked>>	96%	56057	90%	**94	100%
Accurate 1680	<<locked>>	85%	55782	89%	**02	100%
Accurate 2015	<<locked>>	97%	46035	74%	**07	100%
Accurate 2230	<<locked>>	97%	51576	83%	**76	95%
Accurate 2460	<<locked>>	97%	50082	80%	**79	97%
Accurate 2495	<<locked>>	97%	36593	59%	**31	98%
Accurate 2520	<<locked>>	97%	40205	64%	**64	95%
[Accurate 4064]*	<<locked>>	97%	29979	48%	**64	93%
Alliant AR-Comp	<<locked>>	97%	40683	65%	**94	100%
Alliant Reloder-10x 👍	<<locked>>	97%	50908	82%	**95	100%
Alliant Reloder-7	<<locked>>	93%	55724	89%	**95	100%
Baschieri & Pellagri 106 👍	<<locked>>	96%	55767	89%	**72	100%
[Hodgdon BL-C2]*	<<locked>>	97%	42061	67%	**97	94%
Hodgdon Benchmark	<<locked>>	97%	47355	76%	**90	96%
Hodgdon CFE BLK	<<locked>>	92%	55709	89%	**76	97%
Hodgdon H322	<<locked>>	97%	46659	75%	**53	99%
Hodgdon H335 👍	<<locked>>	97%	55999	90%	**97	99%
Hodgdon H4198 👍	<<locked>>	94%	55477	89%	**76	99%
IMR 3031	<<locked>>	97%	34940	56%	**79	97%
IMR 4198	<<locked>>	97%	53505	86%	**79	100%
IMR 4227	<<locked>>	88%	55796	89%	**40	100%
[IMR 8208 XBR]*	<<locked>>	97%	44034	71%	**74	94%
Lovex D073.4	<<locked>>	97%	52910	85%	**08	97%
Lovex D073.5	<<locked>>	97%	49458	79%	**69	97%
[Lovex D073.6]*	<<locked>>	97%	37043	59%	**05	94%
Lovex S053	<<locked>>	89%	55811	89%	**10	100%
[Lovex S060]*	<<locked>>	97%	43656	70%	**05	92%
Norma 200	<<locked>>	96%	55970	90%	**44	100%
[Norma 201]*	<<locked>>	97%	39508	63%	**92	93%
Norma 202	<<locked>>	97%	39349	63%	**25	96%
[Ramshot Wild Boar]*	<<locked>>	97%	42888	69%	**80	92%
[Ramshot X-Terminator]*	<<locked>>	97%	49530	79%	**36	94%
ReloadSwiss RS 14	<<locked>>	97%	29588	47%	**73	100%
ReloadSwiss RS 36	<<locked>>	88%	55840	90%	**76	100%
ReloadSwiss RS 40	<<locked>>	97%	50865	82%	**95	98%
Rottweil R 901	<<locked>>	97%	42902	69%	**54	97%
[Rottweil R 902]*	<<locked>>	97%	36840	59%	**30	92%
SNPE Vectan BA6 1/2	<<locked>>	92%	55550	89%	**49	100%
SNPE Vectan SP 10	<<locked>>	96%	55825	90%	**87	99%
SNPE Vectan Tubal 3000	<<locked>>	97%	43497	70%	**02	97%
SNPE Vectan Tubal 5000	<<locked>>	97%	34577	55%	**41	96%
[Shooters World Match Rifle]*	<<locked>>	97%	37043	59%	**05	94%
Shooters World Tactical Rifle	<<locked>>	97%	55912	90%	**18	96%
Somchem S321	<<locked>>	97%	47921	77%	**72	96%
Somchem S335	<<locked>>	97%	41481	67%	**95	97%
Vihtavuori N110	<<locked>>	83%	55463	89%	**28	100%
Vihtavuori N120	<<locked>>	96%	55622	89%	**53	100%
Vihtavuori N130	<<locked>>	97%	47979	77%	**87	100%
Vihtavuori N133	<<locked>>	97%	39349	63%	**52	98%
Vihtavuori N135	<<locked>>	97%	28732	46%	**82	95%
Vihtavuori N140	<<locked>>	97%	36738	59%	**43	96%
Vihtavuori N530	<<locked>>	97%	46615	75%	**36	95%
Vihtavuori N540	<<locked>>	97%	36318	58%	**59	95%
Winchester 748	<<locked>>	97%	46760	75%	**82	96%
Winchester StaBALL Match	<<locked>>	97%	51488	83%	**35	95%

Max Load - Barrel Length: 23.60''

Powder	Charge	FR	MaxP	%	V(0)	z
[ADI AR 2206H]*	<<locked>>	94%	37420	60%	**66	90%
ADI AR 2207	<<locked>>	81%	37072	59%	**20	100%
ADI AR 2219	<<locked>>	81%	32822	53%	**64	95%
Accurate 1680	<<locked>>	81%	48182	77%	**87	99%
Accurate 2015	<<locked>>	81%	27195	44%	**10	95%
[Accurate 2230]*	<<locked>>	87%	34867	56%	**77	90%
[Accurate 2460]*	<<locked>>	83%	30023	48%	**85	90%
[Accurate 2495]*	<<locked>>	81%	20218	32%	**78	90%
[Accurate 2520]*	<<locked>>	87%	27949	45%	**85	90%
[Accurate 4064]*	<<locked>>	91%	24410	39%	**10	90%
Alliant AR-Comp	<<locked>>	81%	24163	39%	**77	96%
Alliant Reloder-10x	<<locked>>	81%	30472	49%	**02	97%
Alliant Reloder-7	<<locked>>	81%	38595	62%	**23	99%
Baschieri & Pellagri 106	<<locked>>	81%	33852	54%	**98	96%
[Hodgdon BL-C2]*	<<locked>>	91%	33692	54%	**13	90%
[Hodgdon Benchmark]*	<<locked>>	84%	31314	50%	**59	90%
[Hodgdon CFE BLK]*	<<locked>>	81%	38058	61%	**70	92%
[Hodgdon H322]*	<<locked>>	81%	27543	44%	**23	92%
[Hodgdon H335]*	<<locked>>	81%	31807	51%	**44	93%
Hodgdon H4198	<<locked>>	81%	37217	60%	**54	96%
[IMR 3031]*	<<locked>>	84%	23337	37%	**41	90%
IMR 4198	<<locked>>	81%	33170	53%	**18	99%
IMR 4227	<<locked>>	81%	45469	73%	**95	100%
[IMR 8208 XBR]*	<<locked>>	88%	33344	53%	**48	90%
[Lovex D073.4]*	<<locked>>	82%	30487	49%	**79	90%
[Lovex D073.5]*	<<locked>>	83%	30023	48%	**85	90%
[Lovex D073.6]*	<<locked>>	89%	27949	45%	**85	90%
Lovex S053	<<locked>>	81%	44092	71%	**43	100%
[Lovex S060]*	<<locked>>	92%	37550	60%	**84	90%
Norma 200	<<locked>>	81%	34403	55%	**84	99%
[Norma 201]*	<<locked>>	91%	32416	52%	**41	90%
[Norma 202]*	<<locked>>	85%	26165	42%	**00	90%
[Ramshot Wild Boar]*	<<locked>>	94%	38580	62%	**89	90%
[Ramshot X-Terminator]*	<<locked>>	90%	38696	62%	**39	90%
ReloadSwiss RS 14	<<locked>>	94%	28268	45%	**47	100%
ReloadSwiss RS 36	<<locked>>	81%	44585	71%	**15	100%
[ReloadSwiss RS 40]*	<<locked>>	81%	29617	47%	**62	90%
[Rottweil R 901]*	<<locked>>	82%	26455	42%	**70	90%
[Rottweil R 902]*	<<locked>>	93%	32996	53%	**41	90%
SNPE Vectan BA6 1/2	<<locked>>	81%	40654	65%	**49	100%
[SNPE Vectan SP 10]*	<<locked>>	81%	32866	53%	**67	94%
[SNPE Vectan Tubal 3000]*	<<locked>>	82%	26310	42%	**18	90%
[SNPE Vectan Tubal 5000]*	<<locked>>	86%	24410	39%	**72	90%
[Shooters World Match Rifle]*	<<locked>>	89%	27949	45%	**85	90%
[Shooters World Tactical Rifle]*	<<locked>>	83%	34258	55%	**34	90%
[Somchem S321]*	<<locked>>	86%	32024	51%	**48	90%
[Somchem S335]*	<<locked>>	81%	24831	40%	**98	91%
Vihtavuori N110	<<locked>>	81%	51779	83%	**79	100%
Vihtavuori N120	<<locked>>	81%	34664	56%	**31	100%
Vihtavuori N130	<<locked>>	81%	28950	46%	**10	96%
[Vihtavuori N133]*	<<locked>>	81%	24004	38%	**75	92%
[Vihtavuori N135]*	<<locked>>	88%	21988	35%	**72	90%
[Vihtavuori N140]*	<<locked>>	86%	25730	41%	**57	90%
[Vihtavuori N530]*	<<locked>>	86%	32605	52%	**44	90%
[Vihtavuori N540]*	<<locked>>	88%	27079	43%	**20	90%
[Winchester 748]*	<<locked>>	86%	31488	50%	**54	90%
[Winchester StaBALL Match]*	<<locked>>	88%	36405	58%	**49	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