The Walther LG300 Dominator Field Target Rifle
Some history on the Walther LG300 Dominator field target rifles.
The Walther LG300 Dominator was first launched in 2001. It was the first dedicated Field Target rifle from a continental European manufacturer. The designer (or at least one of them) at the Walther factory was a Field Target shooter at that time. The Walther Dominator is based on the 7,5 Joule 10 meter ISSF style airrifle, the Walther LG300. Back then in 2001 the only technical difference between the 7,5 Joule LG300 and the 16 Joule Walther Dominator was the pressure regulator, the heavier striker / hammer and a 490 mm long barrel compared to 420mm for the Walther LG300 (the cocking lever and barrel shroud were also different but these are cosmetic differences).
The Walther LG300 Dominator was available in 4,5mm calibre and 16 Joule/12 FPE and 21 Joule/15,5 FPE versions. And the choice of an aluminum Alutec stock or a laminated wooden stock. The 21 Joule version has a stronger hammer spring compared to the 7,5 and 16 Joule versions.
Walther LG300 Dominators had a square black aluminium barrelshroud with an 11mm dovetail and a black aluminium round shroud glued on the front part of the barrel (in front of the barrelband). The 10m LG300 rifles do not have these aluminium shrouds but have a longer carbon fibre shroud. There is a 11mm dovetail on the square shroud but this is not suited very well for scope mounting because it is only held by 2 spring/roll pins in the breechblock and 2 in the barrelband. The shroud can move when pressure is put on it or on the stock to which it is connected by the barrelband. The barrel is free floating within this square shroud. The round front shroud is semi free floating in the barrelband. An o-ring keeps the shroud from touching the barrelband.
The first few Dominators had a 490mm long Polygon rifles barrels fitted (at least up to number 3). But Walther soon stopped fitting the polygon barrels and started used conventionally rifled 490mm barrels.
The first Dominators had a cocking lever with a pin and the old type pressure MK1 regulator without grooves. After a few years (2005?) the regulator was improved. It got a new flat regulator valve (also called “poppet valve”) and new flat seal for this valve instead of an o-ring. The brass cylinder nipple was changed to stainless steel and became less prone to damaged threads. These MK2 regulators have grooves on the outside.
At some moment the firing valve and its seal changed. The firing valve went from a cone shape to a flat sealing surface. The firing valve seal from a green softer material to a white PTFE/teflon material. The new type MK2 regulator in combination with the new firing valve and seal made the Dominator a much better rifle with regard to temperature sensitivity. Rifles with the new regulator and valve – seal combination do not suffer from temperature induced point of impact shift. Fully free floating the barrel reduces this even more but this is still a modification that the owner has to do for himself.
At a later time the cocking lever changed from the pin to the flat paddle type.
In 2006 the Dominator Hunter went into production. Compared to the Dominator it has a 565mm long barrel with carbon shroud over its full length. And a new (Fürstenberg, F in a star ) laminate woodstock in a lighter brown color compared to the gray-brown Dominator laminate. It has the short aluminum junior aircilinder (154cm3) and sling swivels. According to manufacturers specifications the Hunter is a much lighter rifle (3,5 kg compared to 5,1 kg for the laminate Dominator).
It seems current year 2014 new LG300 Dominator field target rifles are delivered in the grey-brown laminate with carbon barrel shroud and a 565mm barrel. It is delivered with the 267 cm3 Maxi steel air cylinder like the early Dominator. It does not have the square barrelshroud anymore. The weight seems to be around 4,5kg.