Viper HS series of riflescopes from Vortex is specially designed for shooters and hunters who look out for precision in shooting. Major features you will find in a Vortex Viper HS Rifle Scope include 30 mm main tubes (ruggedly constructed), considerably long eye relief, and 4x optical zooms. Different parts of the scope include objective lens, side parallax focus knob, elevation adjustment knob, MagView, fast focus eyepiece, reticle focus, magnification adjustment ring, and windage adjustment knob.
Let us check out some of the adjustments required in a scope:
1. Reticle Focus Adjustment
First look at a blank white wall through the Vortex Viper HS Scope and turn the knob of eyepiece focus until you get a crisp image. You may need to refocus if the eyesight changes. Therefore, checking the adjustment periodically is very important.
2. Adjustments of Windage and Elevation
Vortex Viper HS Rifle Scopes come with adjustable windage and elevation dials with audible clicks. Every audible click moves point of impact of bullet by 1/4th of MOA or ¼ inch at 100 yards. For adjustment, you need to first remove the outer covers, followed by moving turrets in the direction of choice. This will change point-of-impact of the bullet. For making adjustment, dialling the knob in appropriate direction is important, as indicated by the arrows. After you are done with realigning the zero marks, replace outer covers.
3. Adjustment of Side Focus Parallax
Elimination of parallax error and maximum image sharpness are ensured by side focus parallax adjustment. You will find side parallax adjustments in both 4-16×50 and 4-16×44 riflescopes. As Viper HS 2.5-10×44 is pre-focused at 100 yards distance, side focus parallax adjustments are not found in it. For adjusting it, the first thing that needs to be focused correctly is the reticle. Yardage number on side focus parallax adjustment knob should be matched as accurately possible with the scope body’s indicator arrow. If you don’t find any movement between the target and reticle apparently while moving head back and forth, the setting is correct. The setting can be verified by checking out the image sharpness. In case of proper setting, the target image must be crisp and sharp.
4. Magnification and Reticle Subtension
As a shooter you must understand the relation between magnification and subtensions. This understanding will help in easily calculating wind drift, holdovers, and ranging at partial magnifications (2x, 3x, and 4x). Subtension Multiplier Scale used in HS models:
a. In case of full power magnification (1x), subtension value will be as spec listed
b. In case of 2x setting, subtension value will be twice that of spec listed
c. In case of 3x setting, subtension value will be thrice that of spec listed
d. In case of 4x setting, subtension value will be four times that of spec listed
There are many other adjustments involved in Vortex Viper HS Rifle Scopes, such as centering of reticle, rings & bases, bore sighting, eye relief & reticle alignment, and many more. However, we will discuss about them later.