Re: XLR Chassis Stock
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: scudzuki</div><div class="ubbcode-body"><div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: cavemanmoore</div><div class="ubbcode-body"><div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: PRKmachinist</div><div class="ubbcode-body">It's always said to get the scope as close to the bore as is possible</div></div>
That is antiquated advice from a time when conventional stocks were designed for rifles with open sights. At that time, a low scope was necessary to obtain a good cheek weld. Fortunately, this is no longer the case.
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This is not the only reason to have the scope centerline as close to the bore centerline as possible.
If the rifle is not perfectly horizontal then the vertical stadia line diverges from the plumb, and a greater centerline distance increases the divergence of the bullet trajectory from your windage holdover or dialed correction.
Joe </div></div>
This conundrum that people have about the taller scope rings seems to come up over and over again. Shooters are becoming fixated on an idea that seems to make sense but in reality is not really an issue. Obviously you want the scope centerline as close to the bore line as possible to eliminate any error. However, the effect of the DIFFERENCE in height between a traditional setup and that of one that uses a hand guard is extremely small. We are talking about tenths of an inch per degree at distances nearing a mile. The smallest change in wind will have exponentially more effect than the difference in cant. Perhaps people have been watching the Magpul videos and think that if they are a few degrees off that they will miss the target by 6 feet or so at 500 yards. Simply not the case. If you really have that much cant issue your life as a shooter will not be an easy one. Look at virtually all of today's top SWS's and you will see that they all share the tubular hand guard design of the XLR chassis. Look at dedicated ULR systems like the Cheytac and you will see the hand guard used. The Remington MSR and M2010 systems mount the optic significantly higher than our chassis and yet our military snipers do not seem to have cant issues with their systems that people assume they should. This idea has simply stemmed from antiquated advice that has been misconstrued over time. People that worry about this issue should take some time to calculate the effect so they can see how minor the difference really is.
I realize that there are some that want to eliminate all possible error and that is fine. However, I feel that the tubular hand guard offers more benefits than the cost of the added ring height. The tubular design of the hand guard is light weight and strong. This allows most of the weight of the chassis to be at the back which better offsets barrel weight. You will also notice that the tubular hand guard allows the mounting location for the bipod to be significantly closer to the bore centerline. Both of these factors greatly add to the stability of the rifle and aid the shooter in better controlling the rifle. And of course there are the obvious benefits of modularity that the hand guard affords.
-Kyle ~ XLR
