Same with a bullet. If a target is yards away and my gun barrel is horizontal, the bullet will land low, just like the ball. And just like the ball, I have to aim higher to compensate for gravity's effect on my projectile. How high depends on how fast I throw the ball and how far away my target is. The most popular reticles being offered today by almost all manufacturers have some kind of BDC bullet drop compensation reticle in them.
On second plane scopes the magnification has to be set at a certain power for these to work, and you need known distances for these to be used correctly. A laser range finder is generally required. Again, most manufacturers will have at least one type of compensating reticle. Keep in mind that second plane American scopes will only work at a certain magnification designated by the manufacturer.
Riflescopes in the first plane that increase the size of the reticle along with the target may be used at any power. Some way of range estimation is required for any compensating reticle. Again, use laser range finders. The lines in the reticle excluding the cross hair are called Stadia lines, and are used as aiming points for holdover. Beware, these are not exact.
There are too many variables in gun barrels, ammunition, temperature, elevation, humidity, etc. When sighted in for a hunt at yards here, I was about 10 inches off in elevation at around feet where the air was much thinner and the temperature cooler. You have to actually shoot the gun at specific distances rather than rely on a chart of any kind.
Some reticles such as a mildot reticle can be used to calculate distance. Mil means milradian, not military. A radian is the angular measurement that is equal to the angle formed at the center of a circle by two radii cutting off an arc whose length is equal to the radius.
A mil in a reticle subtends 3. Double that number for yards, triple for yards and so on. A mil is 36" at yards. To find the approximate distance to a target using mildot scopes you must first set the magnification at the required power specified by the manufacturer. Then you must know the approximate height of your target.
A man may be 6' tall or a torso may be 3' tall. A full mil is from the center of one dot to the center of the next. If your target is covered by 2. Now here's the tricky part. Multiply the height of the target in yards x and divide by the height of your target in mils. This is the approximate range to your target. You can see that it takes a while to calculate and that it is not the most precise way to measure for distance.
It will certainly not tell you how high to aim or adjust, either, but the dots can be used for hold over if you know your trajectory. A mildot reticle is also pretty busy looking, and if you hold over, much of your target may be covered by dots. Military snipers normally deploy teams of two, with one shooter, and one doing the spotting and calculations. Mildots are rarely used anymore, with laser rangefinders being quicker and more accurate. Bottom line, use a laser rangefinder to determine distance.
Many scopes are offered with lighted reticles. Shoulder your rifle, and looking at a blank image, simply turn the eyepiece until the reticle is razor sharp.
Glass-etched reticles are far better than copper wire reticles that are typically used. The reticle is actually carved into the glass. Can make thinner and finer lines for long-range precision. Choosing the type of reticle for your rifle scope, and how it applies to the type of hunting or shooting you plan to use it for, is nearly as important as the scope itself.
You can still find rifle scopes with your basic t-plex crosshairs reticle, and these are very efficient. But again, as shooters evolve, so have the reticles with the introduction of various bullet drop compensating BDC and mildot reticles. The basic reticle provides your central aiming point, the crosshairs. In the case of the T-Plex rifle scope reticle, we removed the thick top vertical post.
This creates a cleaner field of view that allows you to get on the target quickly. BDC rifle scope reticles are designed to give you true points of aim at known distances to compensate for bullet drop. Once you find your zero, the dots will give you an exact point of aim whereas a basic reticle would require a bit of guesswork. Each dot below center would represent yards - the second dot yards, the third dot yards, and so on.
Each dot below center would still represent yard increments; your second dot is going to start at yards, the third , etc. The mil or milliradian reticle is designed for the shooter who is really looking to maximize the performance of their cartridge. It is typically offered in the traditional Mildot or a Christmas Tree style reticle that provides precision and speed with hold points along both the horizontal and vertical crosshair to aid in measurement of targets or holdover compensation.
This is equal to approximately. The benefit of MRAD adjustments, especially when shooting long range, is that your do not have to dial as much of the turret as you would with an MOA turret for long ranges. And, how do you simplify it when Burris Optics has 27 reticle options? Leupold doesn't make it any easier to navigate the horde when they have over 70 reticles available. Though, to their credit they have created a Reticle Viewer program where you can search their rifle scopes according to your choice of reticle.
Another authoritative reticle maker in the optics industry is Horus. They specialize in some of the most intuitive and advanced reticles available in the market, period. Horus offers incredibly fast and intuitive ballistic reticles that don't require you to holdover or "click" make scope adjustments to get dead on aim. They provide fast and repeatable results for multiple shots at extreme distances.
But, what do reticles look like and what distinctive features make each reticle different? Let's dive right into what has your brain ticking and your scope-drive chuggin'. This reticle has done its job dutifully for many years. It features the single horizontal and single vertical cross hairs that cross in the center to create the aiming point of the reticle.
Perhaps one of the simplest reticles in the market. It features an enclosed circle - a dot, in the center of the reticle. It can have cross hairs that emit from the top, bottom, left, and right of it that extend through the entire field of view. The most common and simplest reticles are the German 4 and the German 1.
You'll see these reticles with thick right, bottom, and left 3, 6, and 9 o'clock cross hairs that taper off towards the center in the original style or with a dot in the center. Our Leupold and Meopta reviews feature rifle scopes with the availability of the German 4 reticle. The Zeiss Victory HT also has a similar 60 illuminated reticle.
It's simple, uncluttered, and is considered the all-purpose reticle. The thicker posts of the four cross hairs will thin out to draw the eye to the center. It's the all-round, perfect reticle for hunting in thicker brush or big game hunting where you need precision to strike the kill zone so it is no wonder the duplex reticle is considered by many to be the best hunting scope reticle.
Each manufacturer will have their own name for this standard style, such as Leupold's Duplex , Simmons' Truplex , Nikon's Nikoplex , and Weaver's Dual X reticles to name a few. This stands for Bullet Drop Compensation and is a ballistics reticle. These reticles are capable of giving you a true point of aim for a known distance to compensate for bullet drop.
This is very useful for long range hunters. The distance markers may be hash marks, circles, or dots. The ballistic reticle can be simple and basic with only a few dots or lines on the 6 o'clock cross hair. You can validate bullet drop at the range or with the use of the manufacturer's ballistic online program.
BDC reticles may even get more complex with specially distanced markings along both the 3 and 6 o'clock cross hairs. It could even get more complicated than that with a "Christmas tree" style reticle design spanning across in part or the entire field of view. These ballistic reticles are measured in Miliradians Mrad where each dot on the reticle represents 1 Mrad that is equal to 3. It's not as common as MOA in the hunting category because it was specifically designed as a ranging reticle for the military.
It came about so that you could use mil-dot to calculate the approximate size and the distance of your target as well as bullet drop. While it's an ideal reticle for snipers and extreme long distance target shooters, hunters are finding that it helps them with making extreme long distance hunting shots as well.
These reticles are simply black in color and don't have any built-in illumination abilities. This is fine for day time use, is cheaper than illuminated models, and is the standard for reticles today. Any type of reticle can be made to be illuminated. Duplex, dot, BDC, varmint, and German reticles can all be illuminated. You'll see that center-illuminated reticles are very popular. The hash marks get relatively longer with each marking down on the 6 o'clock cross hair. This is to compensate for wind drift as your bullet strike and velocity is greatly affected at long range distances.
Here are three steps to help identify which aspects of a reticle will best suit your hunting needs. Look at the center point of the reticle. Does it have a cross, an open circle, a dot? The center point of the reticle is very important since it's indicative of where you intend your bullet strike to be.
Dots, hash marks, stadia lines, circles Pay attention to the manufacturer's description of the reticle. These distinctive features that are either present on the cross hair, post, or on the entire lens image may be indicative of a bullet drop compensator as a hold over point, a distance marker, or both. These dots, lines, and various other features will represent a yardage distance that are all just estimates unless you've validated that at the range.
It's important to double check the trajectory travel of the specific load you're using to ensure you'll be dead on. If you're using electronic applications via your smart phone or computer, you can print off or view the given yardage estimates for the holdover values that each line or dot will represent with the manufacturer's online ballistic program.
All the guess work is eliminated and the math done for you. Thick or thin cross hairs? The posts of the reticle have a large part to play in how your eye sees the image through the scope.
Now that you know what types of reticles are out there, let's go over how reticle subtensions can affect your hunt. Subtension refers to the amount of space the cross hairs cover on the target. Subtension is affected by both cross hair density and placement of the reticle inside the erector tube.
0コメント