35mm Scope Rings

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One Piece Pivot Mounts

General features of scope rings

35mm scope rings and mono-block mounts are usually very wide, with at least 20mm width. This way there is a huge contact surface between the scopes and the mounts.

The size of 35mm main tube is a rarity, a kind of compromise done by only a couple of companies: the Romanian IOR and the USA-based Vortex and Leupold. Why did they choose to use this diameter is a mystery by itself. Especially in a time when all other rifle scope manufacturers are producing scopes of the same Category with 34mm tubes. Due to this reason, there are only a couple of manufacturers of mounts that produce mounts with this diameter. Almost all mounts for such scopes are of tactical nature, either in the form of tactical scope rings or tactical mono-block mounts.

The most well-known brands of mounts of this diameter are:

35mm Scope Rings

Contessa 35mm Scope mount

The most important thing when mounting a rifle scope with rings is to be aware of the torque needed to fasten the screws in the scope rings. Go over the limit and the structural integrity of the rifle scope will be compromised. Scope rings can also leave a visible mark if not tightened accordingly. The amount of torque should not exceed 2.2 Nm

Is lapping of the 35mm scope rings really needed?

Lapping is a process that is essentially lining two mounting rings perfectly to one-a-another. It is done with special cylinders that grind off the excess metal.

When the ring is constructed from two near half circles - so if the circle of the ring is split in half, roughly in the ratio 50:50 and such riflescope rings are mounted on two separate mounting bases, then lapping is recommended. If lapping is not performed, the very small offsetting can be present when all the different pieces of the mount come together and when both scope rings are mounted on two separated bases. If the mounting of two high-quality scope rings is done on a single-piece base, then lapping is not needed. This is one of the reasons that Picatinny rails are becoming so popular in recent years.

In the worst-case scenario, the axis that runs through the center of the rear scope ring does not completely match the axis that runs through the center of the front ring. For this reason, the scope, if mounted into such rings is under unwanted structural stress. The most obvious problems that occur due to this reason are less than perfect optical performance, tracking problems, the side focus mechanism can stop working and the point of impact groups can be dispersed.

Accessories and tools for lapping 35mm scope mount

With 35mm scope mount, there is also quite problematic to get suitable lapping tools, since most of them are produced in 30 and 34mm diameters. It is a good idea to use a ribbon cut from latex/rubber gloves on the lower contact surface in the ring.

Scope mounts that don't need lapping

Lapping is also not required with monoblock mounts and all mounts are made from one piece of material and alignment of both scope rings is usually perfect. Lapping is also not required with high-quality European mounts since their tolerances are minimal.

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INNOmount 35 mm Pivot Mount, Anschutz 1780

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INNOmount 35 mm Pivot Mount, Anschutz 54

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INNOmount 35 mm Pivot Mount, Antonio Zoli 1900

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Pivot mounts are a special kind of repeatable mounts that are especially popular in Europe and mainly produced by European manufacturers. Most notable among them are German Companies like EAW (Ernst Apel Wurzburg), Recknagel, Henneberger and MAK. These Companies were also among the first to produce mounts of this type. Non German companies like Rusan are also following this trend.

Main benefits of pivot mounts, or swing mounts as they are sometimes called are:

100% repeatability,
very quick and easy detaching and reattaching,
extremely durable; most mounts of this kind are tested on 10000 or more reattachments,
size and weight; light and small, elegant.

There are also some minor weaknesses that such mounts posses and they are: they are usually more expensive than other types of mounts, the installation on the rifle should be done by a skilled gunsmith and most of these mounts are higher than 14 mm.

A distinct feature of pivot/swing mounts is the way the scope attaches to the rifle. The front foot of the mount on the scope is inserted in the front base under a 90 degrees angle to the barrel. Then the entire scope is pivoted around the front base until it is locked into position by the rear base.

Pivot mounts of all types enable windage correction on the rear base at the time of the mounts installation. There are three main types of pivot mounts which are distinguished by the type of the rear base:

EAW style rear base: produced by EAW and Rusan,
Dovetail rail base: produced by Recknagel, Henneberger, MAK and others.
Leupold type rear base

Different Types of Pivot Mounts

35mm Scope Rings

Sub Categories

General features of scope rings

Is lapping of the 35mm scope rings really needed?

Accessories and tools for lapping 35mm scope mount

Scope mounts that don't need lapping

INNOmount 35 mm Pivot Mount, Anschutz 1780

INNOmount 35 mm Pivot Mount, Anschutz 54

INNOmount 35 mm Pivot Mount, Antonio Zoli 1900

VIDEO

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35mm Scope Rings

Sub Categories

General features of scope rings

Is lapping of the 35mm scope rings really needed?

Accessories and tools for lapping 35mm scope mount

Scope mounts that don't need lapping

INNOmount 35 mm Pivot Mount, Anschutz 1780

INNOmount 35 mm Pivot Mount, Anschutz 54

INNOmount 35 mm Pivot Mount, Antonio Zoli 1900

VIDEO

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