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Load data for 458 x 2'' American + .458 | 300gr | Lehigh Defense Controlled Fracturing

Recommended Powder(s): ADI AR 2205, Accurate No. 11 FS, Hodgdon LilGun, Lovex S040

458 x 2'' American + .458 | 300gr | Lehigh Defense Controlled Fracturing

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:
<<locked>>
Caliber:
458 x 2'' American load data
Case Length (l3):
2.000" | 50.8mm
Cartridge Length (C.O.L.):
<<locked>>
Seated Depth:
<<locked>>
Shank Seated Depth:
<<locked>>
Case Capacity:
73.0 Grains of Water | 4.74 cm³
Primer Size:
Large Rifle Magnum (LRM)
Max. allowed Pressure:
59988 psi | 4136 bar
LID:
LID_B11092_C792
Last updated:
2026-05-10
Recommended Twist Rate:
1:27 - 1:23

Load data for 38 loads in caliber 458 x 2'' American with .458 | 300gr | Lehigh Defense Controlled Fracturing bullet and 19 powders such as ADI AR 2205, Accurate No. 11 FS, Hodgdon LilGun, Lovex S040. 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".

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  • 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.

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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 APS 450
<<locked>>
83%
53548
89%
**73
100%
ADI AR 2205 👍
<<locked>>
96%
52301
87%
**05
100%
ADI AR 2207
<<locked>>
97%
30298
51%
**47
95%
[Accurate 1680]*
<<locked>>
97%
44527
74%
**95
92%
Accurate 5744
<<locked>>
95%
52881
88%
**06
97%
Accurate No. 11 FS 👍
<<locked>>
95%
53563
89%
**97
100%
[Alliant Reloder-7]*
<<locked>>
97%
32576
54%
**44
92%
Hodgdon LilGun 👍
<<locked>>
91%
52649
88%
**36
100%
IMR 4227
<<locked>>
97%
41481
69%
**42
97%
Lovex D060
<<locked>>
97%
52402
87%
**00
97%
Lovex D063
<<locked>>
93%
53113
89%
**93
97%
Lovex S040 👍
<<locked>>
90%
53795
90%
**15
100%
Lovex S053
<<locked>>
97%
38508
64%
**19
99%
ReloadSwiss RS 36
<<locked>>
97%
38696
65%
**49
96%
SNPE Vectan BA6 1/2
<<locked>>
97%
36013
60%
**88
100%
Shooters World Blackout
<<locked>>
93%
53113
89%
**93
97%
Shooters World Buffalo Rifle
<<locked>>
97%
52402
87%
**00
97%
Vihtavuori N110
<<locked>>
97%
45861
76%
**72
100%
Vihtavuori N120
<<locked>>
97%
30850
51%
**31
97%

Max Load - Barrel Length: 23.60''

Powder
Charge
FR
MaxP
%
V(0)
z
ADI APS 450
<<locked>>
81%
51039
85%
**47
100%
ADI AR 2205
<<locked>>
81%
32619
54%
**26
98%
[ADI AR 2207]*
<<locked>>
85%
21553
36%
**21
90%
[Accurate 1680]*
<<locked>>
93%
39001
65%
**10
90%
[Accurate 5744]*
<<locked>>
81%
34867
58%
**21
93%
Accurate No. 11 FS
<<locked>>
81%
33997
57%
**21
97%
[Alliant Reloder-7]*
<<locked>>
93%
28776
48%
**65
90%
Hodgdon LilGun
<<locked>>
81%
37855
63%
**52
100%
[IMR 4227]*
<<locked>>
81%
25686
43%
**34
91%
[Lovex D060]*
<<locked>>
81%
33185
55%
**88
92%
[Lovex D063]*
<<locked>>
81%
35114
59%
**31
93%
Lovex S040
<<locked>>
81%
40973
68%
**60
100%
Lovex S053
<<locked>>
81%
24236
40%
**34
95%
[ReloadSwiss RS 36]*
<<locked>>
82%
25048
42%
**64
90%
SNPE Vectan BA6 1/2
<<locked>>
81%
23583
39%
**59
100%
[Shooters World Blackout]*
<<locked>>
81%
35114
59%
**31
93%
[Shooters World Buffalo Rifle]*
<<locked>>
81%
33185
55%
**88
92%
Vihtavuori N110
<<locked>>
81%
28660
48%
**13
100%
[Vihtavuori N120]*
<<locked>>
82%
19972
33%
**42
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

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