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Old 04-20-2011, 09:07 AM
TSQUARED TSQUARED is offline
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Location: Michigan, USA
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Originally Posted by shotslow View Post
Need help. I am using Win 231 for 147 grain 9mm lead bullet. The results are not so hot. Big groups at 25 yards. I am working on the problem. I think I might be crimping them too much. I am using a Lee factory crimp die. I am getting a few keyholes. I have seen that done with a 45 acp with too much crimp.

Can anyone suggest a better powder? I want to load to 900 feet per second. That is a power factor of 132.3. More than enough for USPSA Production minor. Thanks
The Lee factory crimp die may be sizing down the bullet ion the case and causing your problem. I avoid using the Lee FCD znd use a normal taper crimp die. When I shnot lead bullets out of my 9mm pistols the 147 gr. ;ead bullet and W-231 provided excellent accuracy.
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