Load data for .450 N.E. 3 1/4'' + .458 | 305gr | Lehigh Defense Xtreme Penetrator

Recommended Powder(s): Accurate 2495, IMR 3031

Load Specifications

(Use the Personalized Load Calculator below to adjust )

Bullet:	.458 \| 305gr \| Lehigh Defense Xtreme Penetrator
Manufacturer SKU:	07458305SP
Bullet Weight:	305gr \| 19.8g
Bullet Diameter:	0.458" \| 11.63mm
Bullet Length:	1.100" \| 27.9mm
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:	0.459" \| 11.7mm
Shank Seated Depth:	0.459" \| 11.7mm
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_B11074_C765
Last updated:	2025-11-04
Recommended Twist Rate:	1:29 - 1:25

Load data for 100 loads in caliber .450 N.E. 3 1/4'' with .458 | 305gr | Lehigh Defense Xtreme Penetrator bullet and 50 powders such as Accurate 2495, IMR 3031. 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.

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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>>	88%	39581	89%	**57	93%
[ADI AR 2208]*	<<locked>>	93%	39784	90%	**31	92%
Accurate 2015	<<locked>>	84%	39363	89%	**15	100%
Accurate 2495 👍	<<locked>>	89%	39581	89%	**07	100%
Accurate 2520	<<locked>>	88%	39740	90%	**90	97%
Accurate 4064	<<locked>>	95%	39537	89%	**97	98%
Alliant AR-Comp	<<locked>>	88%	39682	90%	**07	100%
Alliant Reloder- TS 15.5	<<locked>>	95%	39755	90%	**94	95%
[Alliant Reloder-15]*	<<locked>>	92%	39624	90%	**77	92%
Hodgdon BL-C2	<<locked>>	88%	39682	90%	**97	95%
Hodgdon Benchmark	<<locked>>	84%	39421	89%	**89	96%
Hodgdon H322	<<locked>>	85%	39624	90%	**64	98%
[Hodgdon VARGET]*	<<locked>>	93%	39784	90%	**31	92%
Hodgdon TrailBoss	<<locked>>	96%	31807	72%	**13	100%
IMR 3031 👍	<<locked>>	92%	39624	90%	**20	99%
[IMR 4064]*	<<locked>>	94%	39798	90%	**35	92%
[IMR 4895]*	<<locked>>	91%	39697	90%	**94	93%
IMR 8208 XBR	<<locked>>	86%	39653	90%	**38	95%
Lovex D073.6	<<locked>>	90%	39595	90%	**94	97%
[Lovex S060]*	<<locked>>	87%	39349	89%	**79	93%
Lovex S062	<<locked>>	92%	39610	90%	**57	95%
Norma 201	<<locked>>	89%	39479	89%	**31	95%
Norma 202	<<locked>>	89%	39682	90%	**64	98%
[Norma 203B]*	<<locked>>	93%	39595	90%	**80	93%
[Ramshot Big Game]*	<<locked>>	92%	39711	90%	**87	92%
[Ramshot Wild Boar]*	<<locked>>	87%	39755	90%	**71	93%
[Ramshot X-Terminator]*	<<locked>>	83%	39653	90%	**02	93%
ReloadSwiss RS 14	<<locked>>	97%	32082	73%	**59	100%
ReloadSwiss RS 52	<<locked>>	94%	39740	90%	**30	95%
Rottweil R 901	<<locked>>	85%	39392	89%	**25	97%
Rottweil R 902	<<locked>>	90%	39537	89%	**28	95%
[Rottweil R 903]*	<<locked>>	97%	39102	88%	**77	94%
[SNPE Vectan SP 11]*	<<locked>>	95%	39682	90%	**94	93%
[SNPE Vectan SP 9]*	<<locked>>	89%	39494	89%	**48	93%
SNPE Vectan Tubal 3000	<<locked>>	87%	39784	90%	**75	97%
SNPE Vectan Tubal 5000	<<locked>>	94%	39755	90%	**92	98%
Shooters World Match Rifle	<<locked>>	90%	39595	90%	**94	97%
Shooters World Precision	<<locked>>	92%	39610	90%	**57	95%
Somchem S321	<<locked>>	84%	39711	90%	**57	95%
Somchem S335	<<locked>>	88%	39769	90%	**02	98%
[Somchem S341]*	<<locked>>	88%	39334	89%	**35	93%
[Somchem S355]*	<<locked>>	96%	39595	90%	**71	94%
Vihtavuori N130	<<locked>>	83%	39566	89%	**75	100%
Vihtavuori N133	<<locked>>	89%	39769	90%	**98	99%
Vihtavuori N135	<<locked>>	97%	38348	87%	**44	99%
Vihtavuori N140	<<locked>>	91%	39798	90%	**51	98%
[Vihtavuori N150]*	<<locked>>	97%	34055	77%	**26	93%
Vihtavuori N530	<<locked>>	84%	39508	89%	**48	95%
Vihtavuori N540	<<locked>>	91%	39668	90%	**64	97%
Winchester 748	<<locked>>	85%	39668	90%	**94	96%

Max Load - Barrel Length: 23.60''

Powder	Charge	FR	MaxP	%	V(0)	z
[ADI AR 2206H]*	<<locked>>	82%	32721	74%	**90	90%
[ADI AR 2208]*	<<locked>>	89%	35375	80%	**33	90%
Accurate 2015	<<locked>>	81%	36172	82%	**52	99%
Accurate 2495	<<locked>>	81%	30037	68%	**84	97%
[Accurate 2520]*	<<locked>>	81%	31140	70%	**93	94%
[Accurate 4064]*	<<locked>>	81%	25295	57%	**39	92%
Alliant AR-Comp	<<locked>>	81%	31676	72%	**26	100%
[Alliant Reloder- TS 15.5]*	<<locked>>	86%	30255	68%	**61	90%
[Alliant Reloder-15]*	<<locked>>	87%	34301	78%	**56	90%
[Hodgdon BL-C2]*	<<locked>>	81%	31415	71%	**97	91%
[Hodgdon Benchmark]*	<<locked>>	81%	36274	82%	**16	94%
Hodgdon H322	<<locked>>	81%	35302	80%	**66	97%
[Hodgdon VARGET]*	<<locked>>	90%	35375	80%	**33	90%
Hodgdon TrailBoss	<<locked>>	89%	28384	64%	**44	100%
IMR 3031	<<locked>>	81%	27876	63%	**21	95%
[IMR 4064]*	<<locked>>	89%	34156	77%	**03	90%
[IMR 4895]*	<<locked>>	85%	32764	74%	**30	90%
[IMR 8208 XBR]*	<<locked>>	81%	33721	76%	**00	92%
[Lovex D073.6]*	<<locked>>	81%	29167	66%	**34	93%
[Lovex S060]*	<<locked>>	81%	33199	75%	**34	90%
[Lovex S062]*	<<locked>>	82%	28776	65%	**85	90%
[Norma 201]*	<<locked>>	81%	31125	70%	**31	91%
Norma 202	<<locked>>	81%	30879	70%	**57	95%
[Norma 203B]*	<<locked>>	87%	32953	74%	**23	90%
[Ramshot Big Game]*	<<locked>>	88%	34751	79%	**69	90%
[Ramshot Wild Boar]*	<<locked>>	82%	33214	75%	**13	90%
[Ramshot X-Terminator]*	<<locked>>	81%	36869	83%	**46	92%
ReloadSwiss RS 14	<<locked>>	85%	26905	61%	**47	100%
[ReloadSwiss RS 52]*	<<locked>>	84%	28761	65%	**48	90%
Rottweil R 901	<<locked>>	81%	34389	78%	**07	96%
[Rottweil R 902]*	<<locked>>	81%	29486	67%	**85	90%
[Rottweil R 903]*	<<locked>>	90%	30661	69%	**84	90%
[SNPE Vectan SP 11]*	<<locked>>	91%	34548	78%	**72	90%
[SNPE Vectan SP 9]*	<<locked>>	83%	32967	75%	**00	90%
SNPE Vectan Tubal 3000	<<locked>>	81%	33301	75%	**31	95%
[SNPE Vectan Tubal 5000]*	<<locked>>	81%	26832	61%	**83	94%
[Shooters World Match Rifle]*	<<locked>>	81%	29167	66%	**34	93%
[Shooters World Precision]*	<<locked>>	82%	28776	65%	**85	90%
[Somchem S321]*	<<locked>>	81%	35868	81%	**72	94%
Somchem S335	<<locked>>	81%	32343	73%	**31	96%
[Somchem S341]*	<<locked>>	83%	33344	75%	**97	90%
[Somchem S355]*	<<locked>>	89%	31357	71%	**74	90%
Vihtavuori N130	<<locked>>	81%	37144	84%	**26	100%
Vihtavuori N133	<<locked>>	81%	30792	70%	**92	97%
[Vihtavuori N135]*	<<locked>>	81%	23598	53%	**51	93%
[Vihtavuori N140]*	<<locked>>	81%	28877	65%	**85	94%
[Vihtavuori N150]*	<<locked>>	90%	27833	63%	**62	90%
[Vihtavuori N530]*	<<locked>>	81%	35317	80%	**49	93%
[Vihtavuori N540]*	<<locked>>	81%	28427	64%	**92	93%
[Winchester 748]*	<<locked>>	81%	34577	78%	**82	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.

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