I loaded about 300 44 mags up, only to find out my wonderful Lee Pro1000 (now gone thank God) wasn't throwing a charge every 3rd or 4th round. Wore out a dowel knocking squibs out, and had to resort to my cleaning rod. Eventually, I gave up and took the rest home. Pulled about 200 with a bullet puller.
Same thing happened to me with my Lee 1000 only it was about every 10th round that wasn't getting powder. After much investigation there was a live primer in my powder hopper (don't know how it got there) so when I filled up the hopper sometimes the charge was full and other times it was missing.
The major flaw with the Lee 1000 is you can not see that there is powder in the case because it is at the back of the rotation. If they had station 1 at the 3 O'clock postion and have the bullet seater right in front of you and dropping loaded rounds at the 5 O 'clock position there would be no problem.
For the Lee 1000 I have come up with a system to get rid of missed charges, a bit more work but it ends up to be about the same amount of time.
1. Have die head set up to only deprime and reprime and only flaring the case in station 2.
2. Once I have all my cases primed and flared I then change to another die head with the seater die and a crimping die.
3. Charge all my cases with my RCBS powder measure and visually inspect each case and put a bullet on top.
4. Feed them in one at a time for seating and crimping.
Sounds like a lot of extra work but I never have to worry about a missed charge or a primer not being seated correctly and having to strip the machine to clear all the powder out of it.
Someday I will get a Hornady or Dillon press but having to spend $2400.00-2800.00 (650 with needed conversion kits) is not that appealing to me right now for the amount that I shoot.
Kind of like changing your home furnace when you only use 80 GJ per year, by the time you save the difference of a High Efficient model, you will have great grand children and the furnace is warn out or has already been changed.