Warning OLD MANS RANT AHEAD ;; TCs designs have been kinda confusing for me since the very beginning. Had many opportunities to speak with TC staff at SHOT shows over the years and worked with the late Hal Sharon (who had the real info). In short and IMHO) TC designs were to fill the black power demand begun as a combination of 1968 gun acts and the US bicentenial. They were also a result of marketing and engineering available at the time. The single wedge and barrel length were both ergonomic and cost effective moves. The coil spring lock was also a cost/benefit effective choice. Easy to produce with wax castings and cheap to make springs. The 28" barrel never felt right to me. When i questioned the single wedge and 28" hawken barrel i got a weird answer from TC staff. Largely chosen as easy to pack and ship in a box, plus shorter stocks and barrels meant more could be made for less $. Think they had a price in mind and worked backwards. They may have also had a eye toward accessories to fit the chosen design. Got to do a customer questionnaire asking for advice and recommendations for changes and new products. Many, myself included, suggested a smaller rifle with interchangeable barrels in .36 and .45. And a shotgun barrel to fit the hawkin. They came out with the senecas later that year but Sharon beat them to the shotgun barrel producing a drop in 20. The englander series came out right after that an about killed Sharons product.