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Old February 10, 2001, 12:44 AM   #10
alan
Senior Member
 
Join Date: June 7, 1999
Posts: 3,847
Hawkman:

Re your crimping problems, you might try the following changes in your routine.

1. Avoid seating/crimping in the same die, at the same time. Use a separate taper crimp die. By the way, what sort of press are you using.

2. Check the adjustment/setting of your sizer die. You might not have it screwed down far enough.

3. If you are using fired brass, particularly fired in Glocks, they seem to swell cases near the head, this could cause a feeding problem.

4. Try the following method of adjusting taper crimper. Use an empty, unprimed but sized case, in which you have seated a bullet to the oal you want to use. Run the ram to the top of it's travel, with dummy round in "shell holder" or "shell plate". Screw taper crimper down till you feel resistance. Lower ram. Turn die in by 1/8 to 1/4 turn increments, running ram to top of it's stroke. Measure dia over case mouth, it should be equal or smightly smaller than same place on a factory round. Also, you could measure oal of dummy round. Chamber the dummy from magazine, just as you would when actually firing. Remove dummy round and check oal. If bullet has been pushed deeper into case, you need more crimp. If it is o.k., then set the die's lock ring and forget it, the problem should be solved.

5. You can also check taper crimp as follows. Load dummy round as before, and make a preliminary setting of taper crimp die. Using a bathroom scale and a piece of board, stand dummy round, bullet down on scale platform. With board, put a load, steady pressure, on case head, till scale reads 20-25 pounds, possibly a bit less. If bullet truncates into case, you need more crimp.
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