Miroku MK70 Sporter 30″ Grade 1 with Standard Sights and Rubber Pad: A Comprehensive Review

The Miroku MK70 Sporter is a highly regarded over-and-under shotgun that has earned its place as a favorite among clay shooters and hunters alike. Manufactured in Japan, the MK70 is built in the same factory where many Browning shotguns are produced, ensuring exceptional craftsmanship and reliability. This article delves into the features, performance, and overall value of the Miroku MK70 Sporter 30″ Grade 1 with standard sights and a rubber pad.

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Overview of the Miroku MK70 Sporter

The Miroku MK70 Sporter is designed to cater to both intermediate and experienced shooters who seek a versatile shotgun for clay shooting or game hunting. With its 30-inch barrels, Grade 1 wood finish, and rubber recoil pad, this model strikes an excellent balance between performance, durability, and affordability.

Key Specifications

• Barrel Length: 30 inches
• Weight: Approximately 7 lbs 8 oz
• Rib Width: 10mm rib with a shallow center channel
• Chamber Size: 3 inches (steel shot proofed)
• Choke System: Invector Plus long chokes
• Stock Material: Plainly figured but well-finished Grade 1 wood
• Recoil Pad: Rubber pad for enhanced comfort during shooting

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Build Quality and Design

One of the standout features of the Miroku MK70 Sporter is its exceptional build quality. The shotgun boasts monobloc barrels that are expertly machined to ensure durability and precision. While some enthusiasts may argue that demi-bloc construction offers superior strength, Miroku’s monobloc barrels are so well-crafted that it is nearly impossible to detect any visible joints.

The action design is based on a Japanese modification of the legendary Browning Superposed/B25 platform. This includes a full-width hinge pin for increased bearing surface, which contributes to the gun’s robust feel. The locking mechanism employs a full-width flat bolt engaging beneath the bottom chamber for secure lock-up1.

The stock design is another highlight of this model. It features a well-radiused grip that provides excellent purchase and control during shooting. The length of pull measures approximately 14⅞ inches—ideal for most shooters—and the stock includes minimal cast for right-handed users. However, some users have noted that the comb height may be slightly low for optimal sight alignment.

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Performance Features

Barrels and Chokes

The MK70 Sporter’s barrels are back-bored to an ideal dimension of 18.7mm, which helps reduce felt recoil while improving shot patterns. Additionally, the long forcing cones further enhance performance by minimizing pellet deformation as they exit the barrel.

This model comes equipped with Invector Plus long chokes—renowned for their versatility and effectiveness across various shooting disciplines. However, only three chokes are included in the package (typically Full, Modified, and Improved Cylinder), which may necessitate purchasing additional chokes depending on your specific needs.

Sights

The standard sights on this shotgun consist of two white beads: one at the muzzle (foresight) and one mid-bead along the rib. While these sights are functional for most applications, some shooters prefer removing the mid-bead as it can be distracting during fast target acquisition.

Recoil Management

The inclusion of a rubber recoil pad significantly enhances comfort during extended shooting sessions by absorbing much of the felt recoil. This feature makes it an excellent choice for those who plan to use it extensively at clay ranges or in hunting scenarios.

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Shooting Impressions

In terms of handling characteristics, the Miroku MK70 Sporter feels solid yet nimble due to its relatively light weight (7 lbs 8 oz). The balance point leans slightly toward being muzzle-heavy—a trait preferred by many clay shooters as it aids in smooth target tracking. However, adding weight to the buttstock could improve overall balance if desired.

During testing sessions with various cartridges (including steel shot), all mechanical functions performed flawlessly without any misfires or malfunctions. The reduced felt recoil from back-bored barrels combined with long forcing cones made shooting comfortable even after several rounds.