Arkansas Paul, I was trained to reload on Dillon 550 and Pro 1000 by a bullseye match shooter who was a stickler for consistency and accuracy. Yes, Dillon is very good and if you had the funds, I would recommend the 550/650 any day. But he had me load my USPSA match rounds on both presses and my pistols could not tell the difference as they (1911/Sig226) produced the same size shot groups.
But as to Pro 1000, this is my perspective.
The primary issue with Pro 1000 centers around the gravity based primer feed attachment.
1. If the feed ramp is not kept clean or full, insufficient weight of primers (especially small primers) won't push another primer into station to prime the case. The solution to this problem is simple - keep the primer feed ramp clean and full.
2. Tula/Wolf primers (especially LP primers) have slightly larger diameter cups than Winchester/CCI and will cause more trouble with smooth/reliable seating of primers. When I help set up reloaders to Pro 1000, I have them try Tula/Wolf primers then Winchster/CCI and they definitely can notice the difference between the primer types. By far, Magtech primers have been the smoothest primers to feed on Pro 1000 along with Winchester/CCI second. Can you use Tula/Wolf primers on Pro 1000 if that's all you can find? Sure, but you will experience a lot of hassle seating them while Winchester/CCI will seat much easier in comparison.
3. If powder/debri falls around the primer push rod (see picture above), it will settle at the bottom of the rod tube and prevent the rod from dropping down all the way flush with the feed ramp surface. When this happens, primer sliding into station will tip and push up against the bottom of the shellplate (pushed up by the primer rod coming up to seat the primer) and this will prevent the rotation of shellplate and make the reloader use choice 4 letter words.
When this happens, solution is to clear the debri so the top of the primer push rod falls down flush/below the feed ramp surface. You do this by removing the index hex rod > removing the shell plate > pull off the primer feed attachment > remove primer push rod and spring > clean the tube bottom > Reinstall everything.
If the reloader is unaware of this process and keeps forcing the ram lever, the tilted primer will gouge the plastic feed ramp surface and prevent smooth sliding of primers into station, which will make the reloader use even more choice 4 letter words and starts posting on gun/reloading forums that Pro 1000 is junk and finicky that requires a lot of tinkering.
To keep feed ramp surfaces smooth so primers slide easily into station right on top of the primer push rod, I occasionally burnish the plastic feed ramp surfaces with a folded piece of copy paper. Of course, if the feed ramp surface is too far damaged, it needs to be replaced for proper function.
Two left pictures are before pictures and two right pictures are new/burnished attachments. If your primer feed attachment is damaged beyond repair, replace the primer feed attachment for smooth operation.
Many people comment that they need to tinker with the Pro 1000. This is my extent of tinkering:
- Clean and lube moving metal contact surfaces (need to do for all press)
- Check shell plate timing (need to do for all progressive press)
- Fill powder measure hopper with powder and check drops with a scale until consistent (need to do for all progressive press)
- Check primer feed attachment/primer push rod and fill with primers (need to do for all progressive press)
- Check case feeder function and fill with case (need to do for all progressive press with case feeder)
- Start reloading session and replace reloading supplies as they run out (need to do for all progressive press)
- During the reloading session, if the indexing of the shellplate is not smooth, I will apply more lube to the index hex rod and cycle until smooth
- Once the shellplate timing is set, it is usually good for 10K-20K+ reloading cycles but if it needs adjusting, it's simply done with a Phillips screwdriver.
This is the extent of my "tinkering" with the Pro 1000. My reloading session typically runs 500 to 2000+ rounds. I have a Lee Classic Turret and two Pro 1000 (setup for 45 and 9/40 as they use the same #19 shellplate/small primer feed attachment). While the LCT will load around 250+ rounds an hour, due to the case feeder, Pro 1000 will load 650+ rounds an hour.
If you do decide to get the Pro 1000, this support thread will help -
http://www.thehighroad.org/archive/index.php/t-507454.html#post7877744