This video from Brownells' reloading series features Caleb and Steve demonstrating how to reform 6.8 SPC brass into the 25 GPC wildcat cartridge. The tutorial covers essential steps like sizing the brass to reduce the neck diameter, trimming it to the correct length of 1.620 inches for bullet crimping, and final case preparation including chamfering and deburring. They utilize Hornady dies, Imperial Sizing Wax, and Sinclair case trimmers. The video also briefly touches upon other brass conversions like 300 BLK and .32 Special, and promises future content on load development for the 25 GPC.
This video is the first part of a series exploring "wildcatting" for the AR-15 platform. The hosts, Brownells Gun Techs Caleb and Steve, explain that wildcat cartridges are non-commercial rounds developed by handloaders to fill specific needs. They highlight how many popular cartridges began as wildcats. The video introduces the concept of using existing AR-15 compatible case head sizes for new cartridge development, specifically focusing on a .25 GPC (General Purpose Cartridge) wildcat. This round uses a 6.8mm Remington SPC case necked down for a .257" bullet, promising improved ballistic coefficient and velocity. The demonstration involves loading Starline 6.8 SPC brass with Cutting Edge Bullets and using custom dies from Hornady. The custom AR-15 upper receiver for the .25 GPC features a barrel from Mad Dog Weapon Systems (MDWS), a company specializing in AR wildcatting.
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