Users' questions

Does scope magnification change point impact?

Does scope magnification change point impact?

In theory, the point of impact at your set zero should remain the same whenever you change magnification. One way to do this is to zero at the highest magnification: that way, as you reduce the magnification strength, the crosshair covers more of the target and the movement of the point of impact is less noticeable.

What is point of impact shift?

One of the more common terms you may see when it comes to rifle suppressors is POI shift. This refers to a change in the point-of-impact when adding or removing a silencer from your firearm and it can affect pistols as well as rifles.

What magnification should I zero my scope at?

The reticle should track the POI regardless of zoom power – that’s a basic scope requirement. Therefore you should be able to “zero” your scope to the rifle at any power.

Will a suppressor affect zero?

Point of Impact Shift This generally happens because the added weight of a suppressor changes barrel harmonics. As a result, shorter and thicker barrels are less susceptible to change, but the truth is that there is no way to guarantee zero shift.

Does parallax affect accuracy?

Maximum parallax occurs when your eye is at the very edge of the sight picture (exit pupil). Even when parallax is adjusted for a designated distance, there is an inadvertent error at other distances. At short distances, the parallax effect does not affect accuracy.

Does magnification affect BDC?

The best BDC reticles are engineered to conform to a ballistic curve, the arc of a bullet as gravity pulls it earthward. Here’s why power matters: Because BDC reticles are almost always in the scope’s second focal plane, the size of the crosshairs doesn’t appear to change as you change magnification.

Do gun silencers affect accuracy?

The short answer is yes, suppressors do affect a firearm’s accuracy – but not always how you might expect. Sometimes, your gun’s accuracy might get worse when you attach a suppressor; other times, you’ll actually see your accuracy improve. If you see a change for the better, that’s great.

Does a dirty rifle barrel affect accuracy?

There was a day-to-day variation, not connected with cleaning, in groups fired with the M37 and the M52C rifles. As in the previous test the difference in the group size before and after cleaning was not significant. In general, heating the barrel had an adverse effect on accuracy.

Is 25 yards the same as 100 yards?

The legend is that a 25-yard zero will be about right at 100 yards, but this is not true.

What is a zero stop scope?

The zero stop stops the turret when it gets to the preset distance. In some scopes, the zero stop stops the turret rotation a few clicks below the zero. That gives the user the possibility to dial under the preset zero. But in most cases, it stops at zero. This is a great feature for people who shoot on long range.

Does magnification affect parallax?

Because the amount of parallax increases with magnification, giving you a larger margin of error at higher powers if it is not precisely corrected. For example, on a high-power variable 6-20x magnification scope, parallax appears easy to compensate for at the lower 6x magnification setting.

What causes a scope to shift when the elevation is too high?

When the elevation knob (top) is adjusted up too high, the scope’s erector spring relaxes and allows the erector tube to float instead of holding it tightly in position. Groups can shift from this. This situation is entirely correctible by not adjusting the reticle too high.

What causes the scope to shift on an air rifle?

This is generally the most common cause of “scope shift” for all air rifles (with the exception of hold sensitivity for spring guns, mentioned above). I put the quotes around the phrase, because it isn’t the scope that is shifting…it’s the shooter!

What causes the scope to shift when adjusting the reticle?

The second most common cause for scope shift is when the vertical reticle is adjusted too high. The reticle is etched on a tube called the erector tube. When adjustments are made, the entire erector tube moves. A spring opposite the vertical adjustment knob keeps tension on the erector tube.

Why does the point of impact change when power is increased?

When the power is increased or decreased on some variable scopes, the point of impact can change. Apparently, it depends on how the lenses are arranged inside the scope. This used to be a common problem, but a lot of scope manufacturers have designed their scopes so it doesn’t happen as much anymore.