Currently sorting by headstamp, inspecting, resizing, measuring length and case gauging several thousand 45 ACP brass purchased on various eBay and estate auctions. Brass condition ranges from new to well used. Measuring brass length after resizing using an electronic digital caliper. Some of the brass measures as short as .845" and these show no sign of ever being trimmed. Have found no brass over the .898" maximum length yet. Most are in the .884" to .892" area after resizing. A very few over .893" which I trim back to that length. I'm going to load some of the shortest lengths to test. I'll let you know the results as soon as I'm finished.