Targets can then either be moved forward or backward in intervals of 10 yards until the point of aim coincides with the point of impact for each aiming point. When the rounds are striking center, this is the range you need to associate that particular aiming point with.
An alternative method for tech savvy shooters is to simply measure how far off the bullet impacts are at any given range and compare that to a customized ballistic trajectory graph of their rifle and load combination. The rate of drop near the appropriate yard line will allow you to determine where your target needed to be for those bullets to strike center.
Additionally, some scope manufacturers such as Nikon and Vortex Optics offer free software that calculates custom range values for their BDC scopes based on user data for individual rifle and load combinations.
The benefits of hands-free elevation adjustments in field conditions can hardly be overstated. It may take some effort on your part to understand how specific load and rifle combinations interact with the reticle, but that effort is well worth it when seconds count and you need accurate shots downrange. For the past few months we've been using Wheel Gun Wednesdays to explore issues related to self-defense revolvers and their I purchased the upgraded version, which lets me set-up several different rifle profiles within the application.
Here are some of the more frequently asked questions that I see and am asked in regards to bullet drop compensating rifle scopes:. Nothing as they are both terms used to describe the same type of rifle scope.
While a BDC scope and a mil-dot can be similar, they are not the same thing. A BDC riflescope is equipped with a reticle or turret that offers built-in bullet drop calculations.
The more common type of BDC operation is done via a reticle. A mil-dot scope is a scope that is equipped with a mil-dot reticle.
A mil-dot reticle has mil-dots all along the vertical and horizontal posts of the reticle. Most BDC reticles only allow for bullet drop adjustments, while a mil-dot reticle allows for bullet drop adjustments as well as left or right adjustments for wind drift. If the shooter sets up all the necessary BDC data points correctly and accurately, BDC-based rifle scopes can be extremely accurate. But, if properly configured, a BDC reticle or BDC turret can offer excellent accuracy in both the field and on the range.
Although Nikon is no longer producing rifle scopes, they use to offer several rifle scopes models that were equipped with different styles of BDC reticles.
For example, a Nikon scope with a BDC reticle meant that the BDC reticle was designed to offer bullet drop capability out to yards. Search for: Search. Related Posts Meopta Scopes vs Leupold Scopes Another common question that I was asked about customers who were just being introduced to….
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The short of it is that the number of mils, or milliradians, equals the bullet drop in yards multiplied by , then divided by target distance. From here, we need to look at our Mil-Dot scope to see how clicks are measured. There are several different versions, so it helps us to get to know a few of them. To use one of these charts, we need some information for the ammo we plan on using.
Having a ballistics trajectory calculator is helpful to let us know precisely what we need. You can find the information from the ammunition manufacturer. Once we have it, then we look at a few other factors like sight height, shooting angle, wind speed, and wind angle.
Ballistic compensation at close quarters is going to vary from gun to gun regardless of the scope that is on the rifle. This will work similarly to the adjustable turret in the effect that users would refer to a DOPE chart to calculate the amount of compensation needed for shooting a given distance. Next, you simply reference the reticle and hold over the necessary amount.
BDC scopes with unspecified hash marks are generally comprised of fixed position hash marks with no absolute distance or drop given between each marking. These will generally need to be run through a specific ballistic program or field verified to determine what each line will represent with your own personal setup.
Scopes of this nature tend to be less accurate at longer distances, but are still plenty effective in most situations under yards.
When choosing your next scope the decision will ultimately be directly influenced by your specific needs. Purchasing a scope with adjustable target turrets when your own personal limit is two to yards is wasted money. Conversely, trying to accurately shoot distances exceeding yards with a reticle alone can be extremely inefficient and cumbersome.
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