Cosmoline
Member
How would you have more control over expansion? You may have a better chance of a good expansion, but I dunno about control. I bring this up not to contradict you, but rather in hopes of learning something new
Becuase the more velocity you can command, the more expansion you can ensure. If you're limited to .357 Magnum handgun velocities, you're going to be facing more problems getting reliable expansion, esp. with heavier bullets. The carbine allows you to get considerably more velocity, which in turn helps you get more performance. The down side is too much velocity can make the bullets fall apart on impact, but for one thing we're not talking about anything beyond 2,000 fps and for another you can always select sturdier bullets.