Please Help Me Troubleshoot 9mm Reloads

Single stage VS Progressive press

I haven't ever had this problem with my single-stage press.
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The deck height of the shell plate may be different at each station. If a die makes contact with an out of spec shell plate, this will produce variations in sizing, seating depth/OAL and crimp. Check the deck height at each station of the shell plate.
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Your crimp is excessive. Web search the SAAMI dwg. Should be ~.380" crimp. .381" is max diameter.

After that, setup your OAL using the "plunk test". 1.150" looks right, but needs tested. Your real issue here is variation. You should not have more that .006" extreme spread of pistol bullet OAL.

Your powder charge looks fine and you say you have shot it before, right?

I wonder if you could fix these NG rounds by running they through a properly setup LEE FCD??

I the top of your ram at an angle? I would call Hornady about the variation if I couldn't figure out.
 
which means your OAL will not be uniform.
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Yes it will, not sure how you measure your's, but i do so from the top of the bullet to the bottom of the case. You use your seating die to set the OAL.


Jim
 
Re-reading your original note, I missed something important that others did not, the fact that you changed presses. Those on the board who advised that you reset your dies are correct. As an example, I owned a Lee single stage, which I recently sold, and moved into a three hole press. The two presses are different in dimension - not a great deal but different, and resetting all of my dies for all of my calibers was absolutely necessary. If you are going to switch back and forth between presses, you will need to re-set the dies each time lest you not remember what you did previously.

The build up of shavings is still a possibility.

If you happen to still have rounds that would not chamber, reset your seating die and try the press. If your OAL falls within your tolerance of 1.115 to 1.133, you should be good. Check off with your barrel. If everything works, you can now address your powder grain issue.

Good luck, have fun, be safe.
 
Thanks to All - Resolved

Several mentioned that my re-sizing die might not be lowered as far as it needs to be due to the change of shell plates from the single-stage press to the progressive plate, and you were all right on the mark. I had a little over 1/8th of an inch that wasn't getting re-sized.

I also did reduce the belling / flaring of the case mouth a bunch. Between these two changes, I put together a few dummy rounds and they all fit nicely into the barrel.

Thanks again for all the troubleshooting advice. Your help and time is appreciated.

Tony
 
One of the earlier posts suggested screwing your sizing die down a quarter turn. I'm going to say try the opposite. I think sometimes just the stress put on the brass when the sizing die comes down makes the case bulge a bit near the bottom. I even use spray lube with carbide dies so the pressure from the die is lessened. I usually can either see or feel the bulge, if so I toss that piece. My experience with 9mm is that the case does not need to be sized all that far down. Keep it to a minimum.
 
I would definitely agree that setting up your dies for your press is required, but that shouldn't affect the problems you reported...
 
Don't by chance have bulged bases from range pick up brass that came from a glock factory barrel do ya?

I'm sure you checked that, but I didn't notice if you said you did....
 
Sound like you need to turn your die down some more. Would like you to mike your bullets and see if that could be it. Are you short stroking when depriming if you are not going all the way this could be reason that they are bulged. GOOD LUCK
 
One other possibility, maybe your getting some gunk buildup in the seating die. This happened to me once and it cause the bullet to stick slightly and when lowering the ram pulled the bullet out slightly causing differing OAL. a good cleaning fixed this. The buildup was caused by excessive lube on the bullets getting stuck in the seating die.
 
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