Re: Paralax
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Aries64</div><div class="ubbcode-body"><div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: BeachGun</div><div class="ubbcode-body">Gentlemen,
I would like to put together a rifle/scope package. I have narrowed down the rifle part, but still far away from settling on a scope.
My shooting will be mainly 100-300 yards. May shoot an occasional LR (600+ yards) match, may use it to shoot (at) coyotes. I would like to spend around 1K for a scope. I would prefer a fixed 10x scope. My limited past experience with riflescopes showed me that I don't screw around with magnification at different ranges, so there is no need for me to have a variable.</div></div>
While your shooting <span style="font-style: italic">"will be mainly 100-300 yards"</span>, how often have you shot / how often do you shoot to 600+ yards and how large were / are the targets? I don't want to talk you into something that you don't want or need, but as you use the scope more you may find that the ability to dial down a bit for a larger FOV or up for long range a worthy feature down the road. Not to take anything away from you, I just say this given your <span style="font-style: italic">"limited past experience with riflescopes"</span>
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: BeachGun</div><div class="ubbcode-body">
USO offers the ST-10, with no paralax adjustment. I said all of that to say this. What am I going to miss without paralax adjustment? I know its only another $200, but would like to know what difference that its going to make.</div></div>
Even with a fixed power scope adjustable parallax can be a handy feature. Depending upon the size and type of target an accurate parallax setting can be the difference between a hit and a miss or a clean kill and a wound.
Fixed power scopes are commonly <span style="font-style: italic">(not necessarily all)</span>, set to be parallax-free between 100-200 yards. At close distances and inside of the parallax-free distance the aiming error caused by parallax may not be readily apparent, but as you go farther out
<span style="font-weight: bold"><span style="font-style: italic">parallax</span></span> can take it's toll.
<span style="font-weight: bold"><span style="font-style: italic">Parallax Error</span></span> occurs when the target image and the reticle do not fall on the same optical plane. In case you didn't click on the <span style="font-style: italic">"parallax"</span> definition link above, below is a simple analogy of parallax from the Wikipedia site:
<span style="font-style: italic">"A simple everyday example of parallax can be seen in the dashboard of motor vehicles that use a "needle" type speedometer gauge (when the needle is mounted in front of its dial scale in a way that leaves a noticeable spacing between them). When viewed from directly in front, the speed may show 60 (i.e. the needle appears against the '60' mark on the dial behind); but when viewed from the passenger seat (i.e. from an oblique angle) the needle can appear against a slightly lower or higher mark (depending on whether it is viewed from the left or from the right), because of the combined effect of the spacing and the angle of view."</span>
According to data
<span style="font-weight: bold"><span style="font-style: italic">here</span></span>, <span style="font-style: italic">at 100 yards a mis-alignment of just 2.2 mm will result in a parallax error at the target of sixty-three inches</span>. This is why proper scope-to-eye alignment is so critical.
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: BeachGun</div><div class="ubbcode-body">
If this has been discussed before, sorry for bringing it up again. Tried search but didn't find what I was looking for.
Thanks for a great site.
Beach </div></div>
I hope my post helps. Thank <span style="font-style: italic">Lowlight</span> (the site owner), the contributing members, and the site advertisers (they keep the lights on!) for the site.
Keith </div></div>
The local ranges are up to 300 yards, shooting paper. I have never shot a long range match, which in turn means I have never shot at anything past 300 yards. I don't know how big the targets are at the match (it is Rayners Range in southern Ohio if someone is familiar).
I am familiar with what paralax is. I have never used a rifle scope that didn't have it. With that said, I have never dicked around to see what effect having it set wrong had in my shooting. I know alignment is critical, so with no adjustment, it becomes more so. I suppose if I go the USO way, I should just spend the extra money.
As for the SWFA. I have read good things. Nothing against the company and the support it offers, but I'll stick with US made products when I can.
