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Most of your questions can be answered by reviewing the table of contents below. After reviewing the list, if you still have any questions please call us at
(805) 531-0476 8 A.M. - 4 P.M Pacific Standard Time or email us at info@KentonIndustries.com
Yardage formats defined. L.R. HUNTER. From 2 to 3 tier (2-3 revolutions) of posted 50 yard increments for long range shooting. The average calibration requires two tiers, but varies based on the cartridge and riflescope. Standard calibration out to 1000 yds for magnum cartridges and 600 to 800 yds for standard cartridges (varies on cartridge). MILITARY. Retains the factory MOA scale at the bottom of the knob. 100 yard increments posted above the scale at the required amount of moa. Calibrated up to 3 tiers (3 revolutions) Standard calibration out to 1000 yds for magnum cartridges and 600 to 800 yds for standard cartridges (varies on cartridge). SPEED DIAL. Extra large 100 yard numbers with marked 25 & 50 yard increments for accurate yet rapid dialing in. This format provides up to one revolution of marked yardage increments. The maximum marked yardage will vary based on the cartridge and riflescope. THIS YARDAGE FORMAT APPLIES TO MOST HUNTING APPLICATIONS. TARGET. Retains factory MOA click scale with up to one revolution of marked 50 yd increments posted above the scale at the required amount of clicks. This format provides a quick yardage scale for short to medium range shots with the option of dialing in clicks for longer range shots. The L.R. HUNTER format is recommended for 1/8in click riflescopes having only 6-9 inches per revolution. All four yardage formats have the ability to dial in clicks of adjustment in between the marked 50 yardage increments for fine tuning the yardage setting. TopHow does a TTC mount and operate? Use the factory target knob to adjust bullet impact until you are sighted in (zeroed) at 100 or 200 yards. Remove the factory target knob and mount the TTC setting it at your 100 or 200 yard zero (0). Laser range find the distance to your target. Starting at zero (0), dial past each consecutive increasing yardage increment (200, 250, 300, etc.) until you dial in your target distance. You also have the ability to fine tune the yardage setting. Between any two consecutive 50 yard increments, there is a series of vertical click lines. The halfway point between consecutive 50 yard increments would be a 25 yd setting. You can further split the difference and dial in a shot down to the 10 or even 5 yard increment depending on the distance. L.R. HUNTER & MILITARY multi-tier yardage formats: For shots past one revolution or zero (0), you will visually transition from the last yardage increment in the first row or tier up to the next consecutive yardage increment within the second row or tier. Continue dialing past each consecutive yardage increment along the second row until you dial in the required yardage or transition up to the next row of yardage increments. EXAMPLE: You are dialed in at a 100 yard zero (0) and our target appears at 800 yds. Dial past each consecutive increasing yardage increment (ie. 200, 250, 300, etc.) until you dial in 800 yds. Conversely, if you were dialed in at 800 yds and wanted to return to the 100 yard zero (0), dial past each consecutive decreasing yardage increment (750, 700, 650, etc.) until you are at the 100 yard zero. TopTuned Trajectory Compensator vs. BDC reticle At Kenton Industries, we are confident our custom bullet drop compensator knobs-Tuned Trajectory Compensator (TTC) are far superior to generic "one size fits all" bullet drop compensator (BDC) reticles. A generic "one size fits all" (or even a choice of a non-magnum & magnum) BDC reticle can only be set at one specific muzzle velocity, calibrated for one bullet weight and type, and generally is set for an altitude of 0ft. above sea level @ 59 degrees (F).
You must ask the following questions if you are thinking about purchasing a scope with a generic BDC reticle:
2. Is my bullet the same weight and equally important the same type?
3. Is my hunting/shooting altitude at 0ft. above sea level @ 59 degrees (F)? 4. Is my preferred sight-in/zero range (ie. 100, 200, 250,or 300 yards) offered?
2. A "circle" used for each 100 yard increment does not give you any degree of an alignment point on the target. 3. A BDC reticle having a dot, circle or crosshair only at 100 yard increment intervals runs into the problem of no reference point for 50 yard shots requiring varying degrees of holdover and holdover completely above the animal at longer range shots. 4. A BDC reticle having a dot, circle, or crosshair for every 50 yards becomes too "busy" covering up the animal and runs into the problem of having to watch your animal while locating then maintaining the correct dot, circle, or crosshair on the animal. 5. There is no way to accurately hold for a 10 or even 25 yard increment which is vital for a clean, humane kill at medium, not to mention, long range.
2. Capability to dial in the yardage increment indicated on your laser range finder. 3. Your shot is taken using a basic crosshair (in the center of the optic) which provides a clear view, precise target alignment point, and covers up very little of the target. 4. Flexibility to move TTC to another riflescope or purchase another TTC for new load, bullet wt. or type, etc. (UNLIKE THE PERMANENT ETCHING ON A RETICLE WITH NO WAY TO CHANGE THE TRAJECTORY). Top Recommended riflescopes which can mount a TTC. The following riflescopes have been tested by Kenton Industries' staff or associates and are recommended as an overall good value. Simply remove the factory target knob and replace it with Tuned Trajectory Compensator.
$100-$300 Budget:
$300-$500 Budget:
Top I want to purchase a set of TTC knobs but my riflescope does not have target knobs. Most riflescope manufacturers offer an aftermarket service to install the complete target knob assembly. Contact the manufacturer's customer service for more information. If you order your TTC knob(s) at the same time that you send in your riflescope for target knob installation, you should be receiving both items within a few weeks. At that time, you simply remove the factory knob and mount your TTC knob. TopDo I have to send in my riflescope for TTC knob installation? No, installation requires only loosening the setscrews (or vertical top screw) on the factory knob pulling it off the elevation shaft and replacing it with your TTC. Set the TTC at zero (0)for a 100 or 200 yard zero (0). TopCan you make a TTC knob for any value of click adjustment? TTC knobs are calibrated for all values of click adjustment. Your scope's adjustment is not altered but the yardage increments are marked at the required number of clicks of adjustment based on your bullet's trajectory. Not only will you be able to rapidly dial in any range in 50 or 100 yd increments, but you have a series of vertical "click" lines in between each set of consecutive yardage increments giving you the ability to dial in a shot down to a 25, 10, or even 5 yd increment depending on the target distance. TopDo I need to re-zero my rifle when switching from my TTC calibrated for 500 ft. above sea level to the one calibrated for 7000 ft.? You should always re-zero a rifle when time and conditions permit. However, if you follow the recommended advice, you may only have to re-zero your rifle one more time. For example, your rifle is currently zeroed for your home range (500ft. above sea level @ 70ﾺ F). Make sure that you are dialed in at 100 yds and remove your low altitude calibrated TTC. Mount the one calibrated for high altitude setting it at 100yds. Shoot your rifle at a target placed at 100yds when you are at or close to the 7000 ft. altitude. Example: You determine that the center of your 3-5 shot group is now ﾽ in. higher at 100yds. Rotate the knob two clicks (@1/4 in. per click) down (decrease yardage). Loosen the setscrews, reset your TTC to 100yds, and then tighten down the setscrews. Now you are zeroed for the hunt with the proper calibrated TTC. TTC knob swapping is always done dialed in at 100yds regardless of your zero range. At the end of the hunt or when you get home you simply remount your low altitude knob setting it at 100 yds, add two clicks (increase yardage), loosen set screws and reset knob to 100yds. By recording the required adjustment in a logbook or taping the data on the stock of the rifle you will never have to re-zero your rifle again. You will be able to continuously mount and remount different knobs. Your logbook entry might read: 100yd zero @ 7000 ft = ﾽ in. high. You might not even have to re-zero the rifle at 100yds, but simply switch knobs. If you are shooting a high velocity magnum cartridge, the altitude and/or temperature change will probably not have a significant enough effect on the trajectory of your bullet due to the short flight time out to the first 100yds. If the changing field conditions did effect your 100yd zero with the center of your 3-5 shot group ﾽ in. higher, this change would place your shot only 2.5 inches higher at 500 yds. The kill zone area runs 16 to 24 inches depending on the size of the game animal. You may consider keeping it simple and just swapping knobs. If your scope has 1 moa adjustment (1.047 inches of bullet impact change per click at 100yds), your click adjustment value might be greater than the actual bullet impact change at 100yds. The size of your target and the distance you intend to shoot will determine how precise you need your 100 yd zero to be. The smaller the target and the farther the shot the more precise you have to be. If the gunpowder used in your cartridge is extremely temperature sensitive you may loose enough muzzle velocity at extreme cold temperatures to substantially effect bullet impact at 100yds. Because of a broad range of variables: the amount of increase in altitude, the drop in temperature, and your gunpowder's sensitivity to temperature change which alters your cartridge's muzzle velocity, it is best to re-zero your rifle the first time you are swapping knobs and record the results so it will be the last time! TopWhat if I shoot several different bullet weights thru the same rifle? You can purchase a TTC knob that is calibrated for your main load and adjust the knob for the other loads. For example, your knob was calibrated for the 308-168gr. Federal Match load and you want to also shoot your 150gr. Federal NBT load. You will have to subtract a set amount of clicks from each 50/100 yd setting. A 500 yard shot for the 150 gr. NBT would be to dial the knob to 500 yds then subtract (decrease yardage) 9 clicks. You can make up a simple chart for the 150gr. load: 100 yds -2 (clicks), 200 - 3, 300 - 4, 350 - 5, 400 - 6, 450 - 7, 500 - 9, etcﾅ The preferred way is to have a second knob calibrated for the 150gr. load. This way you can swap knobs accordingly. You should keep a simple log that tells you how many clicks to subtract to re-zero the scope from the 168gr. 100yd zero to the 150gr. 100yd zero. For Example: Log entry: 150gr. 100yd zero = - 2 clicks down @ 100yds. (mount 150gr. knob and set at 100yds; - 2 clicks down, loosen setscrews, reset knob to 100yds, then tighten setscrews.) Now you are ready to dial in and shoot the 150gr. load. The process would be reversed when you want to remount your TTC calibrated for the 168gr. load. (mount 168gr. knob, set at 100yds, +2 clicks up, loosen setscrews, reset knob to 100yds, then tighted setscrews) TopAt what point would I need to adjust my TTC when shooting down into a canyon? A shot taken at an upward or downward angle based solely on dialing in the target distance will cause the bullet to impact high on the target. The bullet impact height will increase with angle and/or target distance. This is due to gravity pulling your bullet downward at a constant 90 degree angle. If you don't want to have to deal with adjusting your TTC or aiming low on the target to compensate for shooting at an angle, follow these general guidelines: For medium to large game size animals, shots taken up to a +/- 10 degree angle will have a minimal effect on bullet impact allowing you to aim center mass. This would include shots out to the maximum effective range of a given cartridge. Taking a shot at an approximate 15-25 degree angle will require keeping the shots out to the mid range of the cartridge. This is to assure that the bullet impact will still be well within the kill zone based off of aiming at center mass. Shots taken over a 25 to 35 degree angle should be kept within 300 yards for non-magnum cartridges and 400 yds for standard magnum cartridges based off of aiming at center mass. You can always dial in the target distance and aim below the center of the kill zone but, how much lower will be based on the steepness of the angle and the target distance. Our Compensator survival system (accessory) provides the required amount of adjustment to apply to your TTC when shooting at an angle. This allows you to take long range-angled shots aiming at center mass. TopWhat are the benefits of purchasing a Tuned Windage Compensator (TWC)? How many times have you missed an important shot because you didn't think there was a strong enough crosswind to even bother compensating for? How about when you moved your crosshair to compensate for the crosswind but ended up with a wounded animal or a miss, because you adjusted incorrectly. Improper adjustment for crosswind at medium ranges, will result in poor bullet placement and wound the game or depending on the crosswind speed, quite possibly miss completely! If there is no adjustment made for long-range shots even for a mild crosswind the shot will likely be a complete miss. The TWC was designed to give the shooter a fast and easy way of adjusting whenever possible for every shot that requires crosswind compensation. The TWC is adjustable for a wide range of crosswind speeds and any angle of crosswind. The TWC will get you in the habit of compensating for crosswind making you more proficient. Our Wind Doper (accessory) is designed to assist the shooter in estimating the speed, angle, and value of crosswind from the shooters position out to the target location. TopWhy we would choose using a TTC over Mil Dots for bullet drop compensation. Utilizing Mil Dots as aiming points, that is the "Dots" of the mil dot system, requires knowing which Dot to use for each 50/100 yd increment for the entire trajectory of your bullet. The Dots designated for long range will have to be the aiming point for a series of yardage increments. The amount of hold from target center will be different for each increment depending on the distance. You may have to hold the designated Dot low from target center for one 50 yd increment, then high for the next 50 yds. There is no consistent pattern to go by. Each high and low hold from target center will range anywhere from several inches to a few feet depending on the distance. For some long-range shots, you will have to place the appropriate Dot literally above or below your target for the proper bullet drop compensation. This provides no real aiming point to focus on which is a crucial factor for accurate long range shooting. The disadvantages of utilizing Mil Dots as aiming points for bullet drop compensation are as follows: The limited number of Mil Dots having to be utilized as aiming points for so many yardage increments creates the problem of so many different holds on your target. Shooting at high altitudes or extreme temperatures requires different holds than that applied for the field conditions at your home range. The size of a Dot covers up too much of your target for a precise shot at long, as well as, medium ranges. The dot completely covers up small or partially concealed targets at medium to long-range engagement. You cannot be dialed in at an appropriate yardage setting with the Mil Dot system. The Mil Dot system should be used for what it was designed for which is range finding. However, with laser range finders becoming inexpensive, and determining target distances at (increasingly) greater ranges, Mil Dots can be categorized as a good back up source for ranging finding. On the other hand, a TTC provides you with the ability to visually dial in the range, point your crosshair at center mass of target for a clean, solid hit. You can already be dialed in at an appropriate yardage setting based on the terrain, which is simpler, faster, and more accurate than trying to select the appropriate Mil Dot and proper hold on the target. Utilizing a TTC as the means of bullet drop compensation gives you the ability to use the fine aiming point of a crosshair which covers up very little of the target. You can aim center of mass for a clean, solid hit no matter how far or how small your target is. In between each set of consecutive 50yd increments there are a series of vertical "click" lines giving you the ability to fine tune a shot down to the 25, 10, or 5 yd increment depending on the distance. Side note: You should always be dialed in to a yardage that best represents your hunting mode: stalking vs. a medium or long-range ambush position. . You cannot be dialed in when using Mil Dots. TopDo you mail orders overseas? Overseas orders must be either emailed or called in during regular business hrs. Please advise whether the order is to be sent via U.S. Mail Global Express or UPS. TopDelivery leade time. Orders take three weeks to fill and are sent via U.S. Mail with delivery confirmation. RUSH ORDERS: (starting 09-08-08) 1.) Phone orders only. 2.) Guaranteed to be sent out within 7 business days. 3.) extra charge $20.00 (per knob) 4.) UPS 1 or 2 day service determined by client. (Optional) Top |