Bwana
02-26-2010, 04:05 PM
This follows on the 9mm and 380 case Hybrid threads.
To use .223 cases you will need to cut the case down. The method I use is screwing a 9mm seater die upside into the press so the opening is facing up. I then adjust the seater stem so that when the base of the .223 case is inserted into the die I can us a small triangular file to cut a little notch into the case at a point a little longer than the desired final length.
I then use that notch to index my tubing cutter and cut it off (save the top piece for future projects). I am attaching pictures about this process below. My vise-locks that I use have a nut on the adjusting rod so that it can be set to clamp exactly on the case.
I then use my case trimmer, modified to be powered by a drill, to trim to desired length. Remember they will end up about .020" longer in finshed form.
Then chamfer and deburr.
Now you have what would normally be a stock case. It should have been cleaned before you started the cutting process.
It WILL need to be six pointed as it is very thick. About .020" more than dia is enough.
Anneal. About 40 cases on burner for 7 min. Cool.
Lube.
Treat it now as you would the 380 cases.
You may need to use a 22 jet die to form nose because the case may not be long enough depending how long you want it to be or use a longer push rod.
To use .223 cases you will need to cut the case down. The method I use is screwing a 9mm seater die upside into the press so the opening is facing up. I then adjust the seater stem so that when the base of the .223 case is inserted into the die I can us a small triangular file to cut a little notch into the case at a point a little longer than the desired final length.
I then use that notch to index my tubing cutter and cut it off (save the top piece for future projects). I am attaching pictures about this process below. My vise-locks that I use have a nut on the adjusting rod so that it can be set to clamp exactly on the case.
I then use my case trimmer, modified to be powered by a drill, to trim to desired length. Remember they will end up about .020" longer in finshed form.
Then chamfer and deburr.
Now you have what would normally be a stock case. It should have been cleaned before you started the cutting process.
It WILL need to be six pointed as it is very thick. About .020" more than dia is enough.
Anneal. About 40 cases on burner for 7 min. Cool.
Lube.
Treat it now as you would the 380 cases.
You may need to use a 22 jet die to form nose because the case may not be long enough depending how long you want it to be or use a longer push rod.