The cases don't stretch much and case life is wonderful. not as good as a .45, but as good as a .38. This also keeps trimming to a not-so-often thing. By comparison, he 30-06 is a beast on cases. They seriously stretch and must be trimmed often, they are usually done after about 5-6 uses. I actually prefer the HXP cases as they neck split after about 4-5 uses and makes counting and tracking pointless. The difference is 15gr vs 48gr of powder, a much bigger fire inside and about 10K more pressure. The carbine is an ideal candidate for reloading.