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I have made 221 fireball brass from 223, I did not anneal the brass before I started but should have. I used a redding form and trim die to start with and then found that forming them to 222 helped quite a lot, I used a tubing cutter to trim cases to near length and then finished with a trimmer. You will need to turn the necks on them because the brass is thicker farther down in the case.I chronographed some loads and found that the LC cases would run about 100 feet per second faster than factory brass with the same charge. I would reccomend doing this as you will appreciate factory brass a lot more, but it is an interesting process.

[QUOTE="Blackhawk43, post: 1202939, member: 21292"] I have made 221 fireball brass from 223, I did not anneal the brass before I started but should have. I used a redding form and trim die to start with and then found that forming them to 222 helped quite a lot, I used a tubing cutter to trim cases to near length and then finished with a trimmer. You will need to turn the necks on them because the brass is thicker farther down in the case.I chronographed some loads and found that the LC cases would run about 100 feet per second faster than factory brass with the same charge. I would reccomend doing this as you will appreciate factory brass a lot more, but it is an interesting process. [/QUOTE]

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