The Government Model is a large semi-automatic pistol with a single-column magazine. Where the 9mm is throwing a light bullet quickly, the .45 is throwing a very heavy bullet slowly - so expect a lot of bullet drop at medium and long range. Holding over by several yards is not uncommon. While posessing significantly more recoil than the 9mm, the .45 makes up for it with markedly better damage. Initially, the extreme drop may make the gun feel inaccurate at range, but it isn't. It's very consistant in delivery, so once you've learned how much to compensate, you can hit just as reliably at medium range. It's just a bit more difficult.