![]() ![]() ![]() The better the information fed into the system, the more accurate the dial will be for your particular load and circumstances. Other conditions are factored in like the average elevation (yards or metres) you normally hunt at and average expected temperature. You also need to measure the height your scope’s line of sight is above the centre of your rifle’s bore. With CDS scope installed, sight the rifle in with your most accurate and effective hunting load at either 100yds or 100m and provide Nioa ballistic technicians with the speed of your load, projectile weight and its ballistic coefficient. ![]() The Custom Dial System is clever and easy to understand. The 4.5-14 power range seems perfect for this sensational dual purpose cartridge I use for harvesting the occasional deer and long-range feral game shooting. I previously had the earlier VX-3 6.5-20×40 but felt the 6.5 power was a bit high for close-range work so it now lives on my 220 Swift. It sat snugly in the 30mm medium rings I bought after-market for my left-handed Ruger Hawkeye in 25-06 several years ago. The VX-3i series with matte finish are handsome scopes and this particular model with its 40mm objective allows for lower mounting on your rifle. Nioa provide this (after-purchase) laser printed dial free of charge with each of their CDS-capable models when the buyer supplies specific ballistic data for their rifle and cartridge combination. Ken suggested the 30mm-bodied model with side focus and CDS dial. Speaking with Ken Stevens from Nioa, Australian importers of Leupold scopes, we agreed a scope in 4.5-14 magnification covers a huge variety of Aussie hunting selections from reasonably close quarters to longer range shots requiring considerable precision and lens clarity. Having just re-read an excellent article by Don Caswell on the Leupold Custom Dial System (CDS) ( Australian Shooter, February 2016) I thought readers might be interested in a high quality scope in the VX-3i series of Leupold options. ![]()
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