One thing I notice is alot people talk about using feel to get the seating depth right on a Lee Auto prime.
Now I dont intend to get ham fisted with my Auto Prime but I had an idea (not sure if it would work).
If you drilled a hole into the handle of the auto prime and put a long thin bolt with varying amount of washers on the head (to adjust how far the bolt protrudes out) then lock it in place with a couple of nuts.
This would mean the lever on the auto prime would go down a set distance each time and therfore seat the primer at a set depth each squeeze.
Sort of like an adjustable trigger travel on pistol.
Does this make sense ? does it sound like it might work ?