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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. TopAt what altitude should I have my knob calibrated? Your TTC will work regardless of the altitude for short to medium ranges. For long range hunting, you need to determine an approximate 4000 foot bracket of altitude. Example: Hunts between 5000-9000ft. above sea level, select 7000ft. as an average. TopHow do I keep track of the yardage setting on a muli-tier yardage format? Sight-in/zero your rifle dead on at 100 or 200 yds. Black out all the visible horizontal lines on the elevation shaft except the line directly below the bottom edge of your TTC knob. Starting at your 100 or 200 yd zero (0), one visible horizontal line equals the 1st tier (1st turn) of yardage increments. One full revolution of the knob will reveal a 2nd horizontal line which indicates the starting point of the 2nd tier (2nd turn). At any point during shooting, by counting the visible horizontal lines on the elevation shaft, you can confirm which tier of yardage the knob is currently on. Turning the knob to the zero (0) will set the knob at the starting point of the tier. TopRecommended 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 Do 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! TopWill I be able to shoot different bullet types of the same weight? The popular Polymer tip bullets made by Nosler, Sierra, Winchester, Swift, Barnes, and Hornady have nearly the same ballistic coefficients (b.c.'s). Keeping within the same bullet type, but using different manufacturer's will have little to no effect on bullet trajectory. This would be the same case when using HPBT or Spitzer BT bullets made by the different manufacturers. Switching between Polymer tip, HPBT, and Spitzer BT type bullets may require an adjustment in your sight-in/zero range (ie. +/-.25" to 1" @ 100 yds) to account for the higher or lower ballistic coefficient. For example: Switching to a lower b.c. bullet than what the TTC knob was calibrated for would require sighting in +.25" to 1" higher @ 100 yds. 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) 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. 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 Why 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. TopUltra custom and special purpose TTC. The following formats and options are available for riflescope models which can mount a TTC. 1.) Multi-tier moa scale (no yardage) 2.) Full right and left turn MOA scale or half turn right and left scale (windage knob). 3.) Urban police sniper TTC. 25yd to 200yd scale with standard 100 yd sight-in/zero (0). (optional zero upon request). 4.) Subsonic ammunition marked in 10 or 25 yard increments. 5.) 10 MPH crosswind compensation for MilDot or MOA reticles. Compensation is marked above the 100 yd increments on your TTC. 6.) +/- 30 degree shooting angle adjustment posted above yardage format (alternative angle upon request). The above formats or options are included in standard pricing and are available upon phone call orders. Customer's desiring their own unique format are encouraged to call for pricing and availability. TopDelivery lead time. Orders take three weeks to fill and are sent via U.S. Mail with delivery confirmation. RUSH ORDERS: 1.) Phone orders only. 2.) Guaranteed to be sent out within 7 business days. 3.) There is a $20.00 extra charge(per knob) 4.) Rush shipping is an additonal charge. Request overnight or second day service via UPS. 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 or UPS. Orders can only be mailed to an address in the United States. Top |