EP158: Dope Card vs Drop Chart

This guide details how to test propellant temperature sensitivity, a crucial factor for consistent long-range accuracy. It emphasizes using a reliable chronograph and testing ammunition across a wide temperature range, from cold to hot conditions. The process involves calculating the muzzle velocity change per degree Fahrenheit to understand how temperature fluctuations affect performance, enabling shooters to account for these variations in their ballistic solutions.

This guide details the process of zeroing a handgun optic, emphasizing the reduction of shooter error by using a stable rest. It covers firing initial groups, calculating adjustments based on optic specifications, and making incremental changes to achieve a precise point of impact at a recommended 25-yard distance, while acknowledging the impact of environmental factors like wind.

This video from Brownells, featuring Caleb, explores the optimal zero distances for an AR-15, primarily for competition use. It analyzes four common zero distances: 25, 36, 50, and 100 yards, detailing their impact zones on an IPSC A-zone target at various ranges. The instructor emphasizes that the 'best' zero is dependent on the intended use of the firearm and the optic employed, recommending the 100-yard zero as a versatile option for experienced shooters, while suggesting 36 or 50 yards for those using red dots or LPVOs respectively, especially for closer engagements.

This video from GBRS Group explains the ballistic principles of deviation and deflection. Deviation is defined as a projectile passing through an object, while deflection is a contact that disrupts or changes trajectory. The demonstration uses 5.56x45mm rounds impacting pillars to illustrate these concepts, showing how fragments can cause minor disruption without lethal effect.

This video explains the fundamental differences between Minute of Angle (MOA) and Milliradian (MIL) as units of angular measurement used in rifle scopes. It clarifies that MOA is 1/60th of a degree, equating to approximately 1 inch at 100 yards, while MIL is 1/6400th of a circle, equating to 10 cm at 100 meters. The instructor notes that most precision scopes use quarter MOA adjustments, allowing for fine-tuning.

This video challenges the common perception of the .38 Special as underpowered by analyzing its performance in realistic, short-barreled snub-nose revolvers. It emphasizes that traditional ballistic testing from longer barrels doesn't reflect real-world carry and use. The discussion highlights how ammunition selection, particularly wadcutters and carefully chosen hollow-points, along with understanding recoil physics and hit probability, are crucial for effective .38 Special performance in defensive scenarios.

This guide details the advanced technique for executing a long-range elk hunt, as demonstrated by a 12-year-old hunter under expert supervision. It emphasizes precise range estimation, scope adjustment using ballistic turrets, and marksmanship fundamentals for a successful shot at extreme distances (1376 yards). The process highlights the importance of preparation, practice, and specialized equipment for challenging hunting scenarios.

This expert guide from Gunwerks demonstrates the significant impact of the Coriolis effect on long-range bullet trajectory. Jeremy Winters, a Gunwerks Product Specialist, explains how Earth's rotation can shift Point of Impact (POI) by over 1 MOA at 1000 yards when shooting East or West. The video provides a live-fire demonstration and recommends shooting North or South to collect accurate ballistic data, minimizing Coriolis-induced errors.

This guide details the process of transforming a factory Remington Model 700 Sendero into a more capable long-range rifle, as demonstrated by Mike Davidson from Gunwerks. Key steps include a trigger upgrade to a 2-pound pull and a precision bedding job using Devcon Aluminum Putty to ensure action stability. The process emphasizes proper disassembly, careful application of bedding materials, and correct reassembly with specific torque values for action screws.

This video demonstrates a professional long-range coyote hunt in Montana, showcasing the effective use of a Gunwerks rifle. Dustin Butler, a representative for Gunwerks, highlights the 'range, dial, and kill' method for successful predator engagement at various distances, from close encounters to over 500 yards. The guide emphasizes proficiency with long-range optics and equipment for accurate shots in challenging terrain.