Second picture of expansion. 1.8x original size, 100% weight retention https://files.catbox.moe/bcb76j.jpg I only fired one round into some jugs for an expansion test (5.2" barrel), and saved the rest (two boxes of 50). And the single round accuracy test all ended up in a single hole. Average cartridge weight varied by about 2-3 grains. I didn't think to measure America ammo to compare, so I might do that when I get home. No velocity test though. Penetration made it into the third bottle and slightly cracked the fourth (likely hydroshock). Bottle #2 was an Arizona Ice Tea gallon turned on its long side. This is a near perfect scenario though with a long barrel and only plastic. It can't be worse than fmj though. And yes its steel case, with bimetal magnetic jacket, and berdan primed. I picked it up for my shtf hording stash and was highly sceptical, not knowing if it would even work properly. Now I'm wishing I was able to get several more boxes.