JBledsoe, your post, while perhaps well intentioned, contains information that is potentially harmful for a novice reloader. Bullet to land distance in the 38-55, which you dismiss as unimportant, happens to be controlled by case length. They go hand in hand so to speak. You can't have one without the other.
Furthermore, if you attempt to minimize bullet jump by using a case that is long enough to extend into the throat and impede bullet release you will have a lot more to worry about than a distorted bullet. How about a distorted rifle?? That is what will happen when pressure spikes because a case can't release the bullet quickly enough. Under no circumstances should one ever use a case that intrudes into the throat of the chamber.
Two of the multiple prerequisites for accuracy as well as safety require that you know the proper case length for your rifle and that you select a bullet profile that fits the throat/leade of your rifle. Hope this helps.