Same as DrMike ... went back to my Thumler Tumbler a few years back when my Dillon vibrating tumbler's motor died & Dillon would not warranty it ... I'm glad that the Dillon broke because I when I went back I tried the stainless steel media with Lemi Shine & never looked back.
It does...
Some of the scopes have a flat underneath that is level with the reticle ... I've used shims & more recently pin gauges to make sure that the base of the scope is dead parallel to the action.
First off - sorry for your loss ...
I will 2'nd Preacher's comment on this - I've reloaded for my 742 (which I've had for 40+ years). The auto-loader does not have the camming power of a bolt action - you will need the smaller base dies to ensure reliable chambering.
You'll love the gun - have...
I have a lead sled and have used it a few times ... Use it for setting up a new scope & such.
Like others I seem to get better accuracy from a set of bags.
In "regular" dies the expander ball passes through the neck, the cartridge is resized and when withdrawn from the die the expander ball is pulled through the neck to expand it to the correct size.
In collet dies a mandrel (a precisely machined rod) of the correct size is in the neck when the...