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Load data for .45-70 Govt. CIP + .458 | 400gr | Barnes Buster

Recommended Powder(s): none

.45-70 Govt. CIP + .458 | 400gr | Barnes Buster

Load Specifications

(Use the Personalized Load Calculator below to adjust )

Bullet:
.458 | 400gr | Barnes Buster
Manufacturer SKU:
30644
Bullet Weight:
400gr | 25.9g
Bullet Diameter:
0.458" | 11.63mm
Bullet Length:
1.072" | 27.2mm
Caliber:
.45-70 Govt. CIP load data
Case Length (l3):
2.105" | 53.5mm
Cartridge Length (C.O.L.):
2.512" | 63.8mm
Seated Depth:
0.665" | 16.9mm
Shank Seated Depth:
0.665" | 16.9mm
Case Capacity:
79.0 Grains of Water | 5.13 cm³
Primer Size:
Large Rifle (LR)
Max. allowed Pressure:
31908 psi | 2200 bar
LID:
LID_B815_C749
Last updated:
2025-02-02

Load data for 16 loads in caliber .45-70 Govt. CIP with .458 | 400gr | Barnes Buster bullet and 8 powders such as none. 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".

  • Muzzle velocity vs. barrel length

    Every 1 inch additional barrel length increases muzzle velocity by approx. 14.8 fps

  • 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 AR 2207
<<locked>>
84%
28674
90%
**29
99%
[Accurate 2015]*
<<locked>>
95%
28601
90%
**36
94%
Alliant AR-Comp
<<locked>>
96%
27586
86%
**39
95%
Alliant Reloder-10x
<<locked>>
91%
28297
89%
**39
95%
IMR 4198
<<locked>>
86%
28674
90%
**77
96%
Norma 200
<<locked>>
87%
28297
89%
**32
96%
Vihtavuori N120
<<locked>>
86%
28529
89%
**99
99%
[Vihtavuori N130]*
<<locked>>
91%
28137
88%
**83
94%

Max Load - Barrel Length: 23.60''

Powder
Charge
FR
MaxP
%
V(0)
z
ADI AR 2207
<<locked>>
81%
25846
81%
**73
98%
[Accurate 2015]*
<<locked>>
89%
24018
75%
**44
92%
[Alliant AR-Comp]*
<<locked>>
92%
23975
75%
**50
93%
[Alliant Reloder-10x]*
<<locked>>
85%
23815
75%
**44
93%
IMR 4198
<<locked>>
84%
26948
84%
**40
95%
[Norma 200]*
<<locked>>
82%
23772
74%
**40
94%
Vihtavuori N120
<<locked>>
82%
25672
80%
**44
99%
[Vihtavuori N130]*
<<locked>>
89%
25889
81%
**40
93%

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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