I am interested in reloading .45 GAP. I have been doing some research and found that the Lee Precision single stage press seems to be a good beginner press. I have just a few questions before I get started. 1: Lee's sight is says you need a Case lenght gauge for the proper caliber but it doesn't list one. is this really necessary? What are you current GAP reloaders using for this step? 2: Am I missing anything from this list that I should be looking to get? Lee 50th Anniversary challenger kit Lee .45 GAP carbide die set Hornady m2 tumbler I am completely new to reloading and just want to make sure I get the right gear I need the first time around. I will be reloading .45 GAP and 9mm initailly but may later reload .380 ACP and 7mm MAG. I really appreciate any/all advice.