I am new to reloading and primarily load 44 mag and 338 win mag. Because I am new to this I overly check case length OAL powders etc to ensure everything is right. But I wonder how much forgiveness there is in this whole process. Yes i know what might happen if you double charge a case, but what happens if you are a little under or a lot under or just a bit over regarding powder weights. If I could get my hands on a cheap bubblegumty 44 mag I would do these tests myself, but I am curious if someone knows what happens. when....say... you take a case and put 30% less powder in it than required. does the bullet simply drop faster or get stuck in the barrell? I have heard of compressed loads but what does that mean.........over charging or using a powder that simply fills the case? I suspect we all have these questions from time to time, so I thought I would ask instead of surfing you tube for my answers. i have more questions in this area, but before I scare everyone off I thought I would stop here.