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.455 MK II

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Load Data for Caliber .455 MK II - Technical Specifications Image

Technical Specifications:

Caliber:
.455 MK II
Bullet Diameter:
0.455" | 11.56mm
Primer Size:
Small Pistol (SP)
Max. Case Length (l3):
0.767" | 19.48mm
Max. Cartridge Length / OAL:
1.260" | 32.00mm
Max. Standardized :
13053 psi | 900 bar
Case Capacity:
19.0 Grains of Water | 1.23 cm3
CID:
CID_780
Standard
C.I.P.
Letztes Update:
10/7/2024
caliber_reloading.webp
  • The .455 Mark II is a large-caliber, rimfire revolver cartridge developed in 1907 by Smith & Wesson.

    It was initially used in the Webley Mark VI revolver and remained in service with British forces through World War I. It has since seen its use declined due to its low velocities and bullet weights.

  • Velocity (V0)

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    Energy  (E0)

    Ballistic Coefficient (BC1)

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    Most popular powders from our community members for this caliber:

  • Weight vs. Velocity - Suitable Bullets for this Caliber

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    Barrel Length  Variation vs. Velocity - by Bullet Weight

.455 MK II load data available with the following bullets:

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