223 Rem - 75gr Hornady BTHP with AR-Comp
This video details the process of creating a custom seating stem for 75gr Hornady BTHP bullets to address concentricity issues with compressed loads. Testing reveals that shorter seating depths (around 2.254" OAL) improve bullet alignment and accuracy, with the best group measuring 0.59" at 100 yards. The host emphasizes the importance of matching seating stems to specific bullet profiles for optimal handloading results.









