July 5th, 2009

Mark Your Calendar for the VHA Varmint Jamboree

The Varmint Hunters Association Jamboree is set for later this month, July 27 – 31, in Pierre, South Dakota. This 5-day event features a 2-Day Shootout, 3-Man Team Competition, and 3-Gun Match with prizes valued at over $4900. Classes for the Shootout are: Stock, Modified, Limited Open, and Unlimited Open. CLICK HERE for complete Shootout Rules.

Varmint Hunters Association

This is a family event with fun shoots Monday through Friday. There will be live and silent auctions, symposiums, special Ladies’ Events, regularly nightly speakers or entertainment, and a big Jamboree Banquet at the Ramkota Lounge on Friday. For more information, visit www.Varminthunter.org/jamboree.html, or call VHA members services, 1-800-528-4868.

Pre-registration costs $30.00, while registration during Jamboree cost $40.00. A Shootout ticket alone is $25.00, while a Banquet ticket costs $25.00. You must be a member of the V.H.A. and registered for the Jamboree in order to compete in the Shootout.

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July 5th, 2009

Better Viewing for Balance-Beam Scales

When he chooses to measure his loads or sort bullets by weight, Forum Member Boyd Allen likes to use his trusty RCBS 10-10 scale. He finds that it works predictably, time after time, and it doesn’t suffer from the drift and calibration issues that plague some of the less expensive electronic scales on the market.

RCBS 10-10 Scale

To make it easier to see the balance point, Boyd has adapted a magnifying glass with a mirror. This makes the end of his balance beam easier to view from his normal position on the bench. Boyd explains: “This set-up uses a cheap magnifier with positioning arms that was probably designed to hold and magnify small objects while soldering them. I think that it came from Harbor Freight many years ago. The mirror lets you look at the scale as if is was at eye level, and of course the magnifier makes the image easier to see.”

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July 5th, 2009

Custom-Calibrated Windage & Elevation Knobs from Kenton

Kenton Calibrated Windage KnobHere’s something that can save you lots of time and aggravation on a varminting trip. This little $90 gizmo is great for varmint hunters and any one who needs to make a quick shot in shifty wind conditions. Instead of the traditional 1/4-MOA hash marks, the Kenton windage turret features markers corresponding to the wind drift your rifle will encounter at various distances.

Custom-Calibrated Windage Knobs
Kenton Industries’ Tuned Windage Compensator (TWC) has built-in windage marks for 10 mph cross-winds at 100-1000 yards. How do they do that? Well the knobs are calibrated either for specific calibers/loads, or they can make custom knobs using your observed field data. The knobs can compensate for various wind speeds (2-20 mph) and angles (15°- 90°), by applying some simple conversion ratios. As a general rule, with a “full-value”, i.e. 90°, crosswind, the wind drift will go up or down in direct proportion to the change in windspeed. That means, for example, a 10 mph crosswind will push the bullet twice as much sideways as a 5 mph crosswind.

Two versions of Kenton’s TWC knobs are offered. The $89.95 TWC #1 features calculated ballistics for standardized factory ammo for the caliber and barrel length you specify. The $89.95 TWC #2 feature customized windage settings based on bullet BC, environmental conditions, elevation, and ballistic information you provide.

Custom Elevation Knobs
Kenton also makes an $79.95 elevation-compensating TTC knob, that can be customized to your rifle. With this elevation turret, yardages are marked in 50-yard increments, and you can literally just “dial in your distance”. However, to work effectively the TTC knob must be tailored to a particular load (velocity and bullet). Moreover, actual bullet drop will differ with changes in altitude, temperature, and shooting angle — so it’s not as simple as it sounds, and you may need multiple knobs if you shoot a variety of loads. Kenton offers it TTC #1 model calibrated for standardized factory ammo. The TTC #2 is calibrated out to the maximum effective range of your cartridge based on bullet type, muzzle velocity, altitude, and temperature. Select the type of yardage format to be used. The #2 is recommended for wildcatters or for those who want to adjust to specific conditions. Lastly, a TTC #3 elevation knob is offered that relies on the purchaser’s actual recorded drop data from the field. The TTC #3 elevation knob will be calibrated based on the click-value or MOA you provide for each 50-yard increment.

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