Load data for .450 N.E. 3 1/4'' + .458 | 300gr | Lehigh Defense Controlled Fracturing

Recommended Powder(s): Accurate 2495, IMR 3031

Load Specifications

(Use the Personalized Load Calculator below to adjust )

Bullet:	.458 \| 300gr \| Lehigh Defense Controlled Fracturing
Manufacturer SKU:	Subsonic 02458300LP
Bullet Weight:	300gr \| 19.4g
Bullet Diameter:	0.458" \| 11.63mm
Bullet Length:	1.125" \| 28.6mm
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:	0.484" \| 12.3mm
Shank Seated Depth:	0.359" \| 9.1mm
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_B11092_C765
Last updated:	2025-11-09
Recommended Twist Rate:	1:28 - 1:24

Load data for 108 loads in caliber .450 N.E. 3 1/4'' with .458 | 300gr | Lehigh Defense Controlled Fracturing bullet and 54 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>>	89%	39479	89%	**67	93%
[ADI AR 2208]*	<<locked>>	94%	39697	90%	**51	92%
Accurate 2015	<<locked>>	85%	39740	90%	**38	100%
[Accurate 2230]*	<<locked>>	83%	39711	90%	**41	94%
Accurate 2460	<<locked>>	83%	39769	90%	**61	96%
Accurate 2495 👍	<<locked>>	90%	39740	90%	**23	99%
Accurate 2520	<<locked>>	89%	39798	90%	**07	97%
Accurate 4064	<<locked>>	95%	39610	90%	**23	98%
Alliant AR-Comp	<<locked>>	89%	39784	90%	**26	100%
[Alliant Reloder- TS 15.5]*	<<locked>>	95%	39508	89%	**07	94%
[Alliant Reloder-15]*	<<locked>>	93%	39668	90%	**00	92%
[Hodgdon BL-C2]*	<<locked>>	88%	39740	90%	**13	94%
Hodgdon Benchmark	<<locked>>	84%	39668	90%	**08	95%
Hodgdon H322	<<locked>>	85%	39508	89%	**77	98%
[Hodgdon VARGET]*	<<locked>>	94%	39697	90%	**51	92%
Hodgdon TrailBoss	<<locked>>	97%	31720	72%	**22	100%
IMR 3031 👍	<<locked>>	93%	39479	89%	**43	99%
[IMR 4064]*	<<locked>>	95%	39595	90%	**41	92%
[IMR 4895]*	<<locked>>	92%	39726	90%	**17	93%
[IMR 8208 XBR]*	<<locked>>	86%	39494	89%	**51	94%
Lovex D073.5	<<locked>>	84%	39769	90%	**61	96%
Lovex D073.6	<<locked>>	91%	39479	89%	**07	97%
[Lovex S060]*	<<locked>>	87%	39726	90%	**02	93%
Lovex S062	<<locked>>	93%	39392	89%	**64	95%
Norma 201	<<locked>>	89%	39552	89%	**51	95%
Norma 202	<<locked>>	90%	39682	90%	**84	97%
[Norma 203B]*	<<locked>>	93%	39479	89%	**00	93%
[Ramshot Big Game]*	<<locked>>	93%	39639	90%	**97	92%
[Ramshot Wild Boar]*	<<locked>>	88%	39639	90%	**84	93%
[Ramshot X-Terminator]*	<<locked>>	84%	39581	89%	**21	92%
ReloadSwiss RS 14	<<locked>>	97%	31923	72%	**68	100%
ReloadSwiss RS 52	<<locked>>	94%	39653	90%	**43	95%
Rottweil R 901	<<locked>>	86%	39740	90%	**44	97%
Rottweil R 902	<<locked>>	91%	39813	90%	**44	95%
[Rottweil R 903]*	<<locked>>	97%	37869	86%	**67	93%
[SNPE Vectan SP 11]*	<<locked>>	96%	39610	90%	**03	92%
[SNPE Vectan SP 9]*	<<locked>>	90%	39769	90%	**74	93%
SNPE Vectan Tubal 3000	<<locked>>	87%	39740	90%	**98	97%
SNPE Vectan Tubal 5000	<<locked>>	94%	39624	90%	**08	98%
Shooters World Match Rifle	<<locked>>	91%	39479	89%	**07	97%
Shooters World Precision	<<locked>>	93%	39392	89%	**64	95%
Somchem S321	<<locked>>	85%	39392	89%	**67	95%
Somchem S335	<<locked>>	88%	39755	90%	**12	98%
[Somchem S341]*	<<locked>>	89%	39798	90%	**61	93%
[Somchem S355]*	<<locked>>	97%	39624	90%	**90	93%
Vihtavuori N130	<<locked>>	84%	39653	90%	**02	100%
Vihtavuori N133	<<locked>>	90%	39436	89%	**08	99%
Vihtavuori N135	<<locked>>	97%	37536	85%	**44	99%
Vihtavuori N140	<<locked>>	92%	39436	89%	**61	98%
[Vihtavuori N150]*	<<locked>>	97%	33431	76%	**26	93%
Vihtavuori N530	<<locked>>	85%	39595	90%	**61	95%
Vihtavuori N540	<<locked>>	92%	39769	90%	**90	97%
Winchester 748	<<locked>>	86%	39552	89%	**13	96%
[Winchester StaBALL Match]*	<<locked>>	83%	39407	89%	**87	93%

Max Load - Barrel Length: 23.60''

Powder	Charge	FR	MaxP	%	V(0)	z
[ADI AR 2206H]*	<<locked>>	83%	33576	76%	**33	90%
[ADI AR 2208]*	<<locked>>	91%	36361	82%	**66	90%
Accurate 2015	<<locked>>	81%	35389	80%	**52	99%
[Accurate 2230]*	<<locked>>	81%	36651	83%	**75	93%
Accurate 2460	<<locked>>	81%	36521	83%	**89	95%
Accurate 2495	<<locked>>	81%	29559	67%	**84	97%
[Accurate 2520]*	<<locked>>	81%	30414	69%	**90	93%
[Accurate 4064]*	<<locked>>	81%	24889	56%	**39	92%
Alliant AR-Comp	<<locked>>	81%	30966	70%	**23	99%
[Alliant Reloder- TS 15.5]*	<<locked>>	87%	30821	70%	**93	90%
[Alliant Reloder-15]*	<<locked>>	89%	35520	80%	**95	90%
[Hodgdon BL-C2]*	<<locked>>	81%	30792	70%	**93	90%
[Hodgdon Benchmark]*	<<locked>>	81%	35621	81%	**16	94%
Hodgdon H322	<<locked>>	81%	34577	78%	**66	97%
[Hodgdon VARGET]*	<<locked>>	91%	36361	82%	**66	90%
Hodgdon TrailBoss	<<locked>>	88%	27963	63%	**44	100%
IMR 3031	<<locked>>	81%	27238	62%	**25	95%
[IMR 4064]*	<<locked>>	91%	35114	79%	**43	90%
[IMR 4895]*	<<locked>>	86%	33025	75%	**56	90%
[IMR 8208 XBR]*	<<locked>>	81%	33069	75%	**00	92%
Lovex D073.5	<<locked>>	81%	36274	82%	**82	95%
[Lovex D073.6]*	<<locked>>	81%	28471	64%	**38	92%
[Lovex S060]*	<<locked>>	82%	33402	76%	**48	90%
[Lovex S062]*	<<locked>>	83%	29399	66%	**15	90%
[Norma 201]*	<<locked>>	81%	30603	69%	**38	91%
[Norma 202]*	<<locked>>	81%	30182	68%	**57	94%
[Norma 203B]*	<<locked>>	88%	33417	76%	**56	90%
[Ramshot Big Game]*	<<locked>>	90%	35549	80%	**05	90%
[Ramshot Wild Boar]*	<<locked>>	83%	34156	77%	**56	90%
[Ramshot X-Terminator]*	<<locked>>	81%	36230	82%	**46	91%
ReloadSwiss RS 14	<<locked>>	84%	26426	60%	**50	100%
[ReloadSwiss RS 52]*	<<locked>>	85%	29559	67%	**84	90%
Rottweil R 901	<<locked>>	81%	33953	77%	**16	95%
[Rottweil R 902]*	<<locked>>	82%	29733	67%	**02	90%
[Rottweil R 903]*	<<locked>>	91%	31198	71%	**13	90%
[SNPE Vectan SP 11]*	<<locked>>	92%	35346	80%	**08	90%
[SNPE Vectan SP 9]*	<<locked>>	85%	33721	76%	**30	90%
SNPE Vectan Tubal 3000	<<locked>>	81%	32619	74%	**38	95%
[SNPE Vectan Tubal 5000]*	<<locked>>	81%	26295	59%	**80	93%
[Shooters World Match Rifle]*	<<locked>>	81%	28471	64%	**38	92%
[Shooters World Precision]*	<<locked>>	83%	29399	66%	**15	90%
[Somchem S321]*	<<locked>>	81%	35172	80%	**72	93%
Somchem S335	<<locked>>	81%	31937	72%	**41	96%
[Somchem S341]*	<<locked>>	84%	34287	78%	**30	90%
[Somchem S355]*	<<locked>>	90%	31952	72%	**07	90%
Vihtavuori N130	<<locked>>	81%	36405	82%	**36	99%
Vihtavuori N133	<<locked>>	81%	30139	68%	**98	97%
[Vihtavuori N135]*	<<locked>>	81%	23148	52%	**47	93%
[Vihtavuori N140]*	<<locked>>	81%	28268	64%	**82	93%
[Vihtavuori N150]*	<<locked>>	91%	28326	64%	**92	90%
[Vihtavuori N530]*	<<locked>>	81%	34606	78%	**46	93%
[Vihtavuori N540]*	<<locked>>	81%	27978	63%	**95	93%
[Winchester 748]*	<<locked>>	81%	33924	77%	**82	93%
[Winchester StaBALL Match]*	<<locked>>	81%	36042	81%	**08	92%

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