This review of the Henry Big Boy Carbine (H012GMCC) provides an expert-level overview of its features, including the color case hardened receiver, large loop lever, and octagonal barrel. The instructor emphasizes the critical role of cartridge overall length (OAL) in ensuring reliable feeding with lever-action firearms, particularly for .38 Special and .357 Magnum calibers. Plans for comprehensive ammunition testing in both the rifle and a revolver are detailed, aiming to identify optimal loads for performance and feeding.
This guide details a cost-effective DIY method for measuring Cartridge Overall Length (COAL) using common tools like scotch tape and dial calipers, bypassing expensive commercial gauges. It explains COAL's importance for safety and accuracy, referencing SAAMI standards and reloading manuals. The video emphasizes understanding factors limiting COAL, such as magazine capacity and bullet design, and provides a practical, step-by-step process for determining maximum COAL specific to a rifle and bullet combination.
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