The cases were CCI. Using Lee carbide dies, they were very easy to resize, much easier than brass. I loaded them with 220 grain flat nose lead bullets and they crimped just fine. The small pistol primers worked perfectly. Accuracy was as good as the same load with brass cases. Every one of the 100 or so that I reloaded shot well and showed no signs of failure. However, during the second reloading, cases started to split while inserting and crimping the bullet. I tossed them all into the trash. These cases showed a very brittle split that you could litterally snap off into little pieces. My results show that these aluminum cases were good for one reload, period. Would I try this expeiment again? Only if brass cases and/or large pistol primers became unavailable, and then, only for ONE reload.