Quoted:



1)  Which is the correct term for using a Lee tool on the outside of the case mouth?





deburring





2)  Which is the term for the inside of the mouth?





chamfering but if there's a burr on the inside of the mouth technically deburring applies also





3)  I primarily load cannalured boolits, but in either case, for accuracy's sake, I am thinking that this case prep step can only have a negative affect on accuracy.  There is no way I am going to remove a uniform amount of material from the case mouth.  That results in inconsistent crimp pressure and different release of the boolit each time?  What say ya'll?





this assumes you're roll crimping, you can opt to a) not crimp b) taper crimp or c) Lee Factory Crimp Die crimp as alternatives.  But never assume, work up two batches of reloads, some with chamfering some without and see what results.  If you use a Giraud trimmer you'll get consistent chamfering results





4)  With cannalures esp. I think it may be best to leave them unchamferred, to get a better more solid purchase on the cannalure's slot.  Thoughts?





see 3) above.  Chamfering inside of case mouth is more or less to aid in seating non-boat tailed bullets, it acts like a tiny funnel of sorts.  With boat tail bullets you don't need inside of mouth chamfering

Quoted:
I am using Dillion Dies. for 223 and 308.  I believe these are both taper crimps.


If there is variation on the remaining mouth material, is it not reasonable to expect variations on results?  I am not using expensive enough projectiles, usually, that I think I could detect the differences.  I am looking to this down the road and I am just looking to gain some knowledge.

Deburing is a normal step in proper case prep, and should not be skipped. Deburing will not effect accuracy as long as you don't over do it. Just take off the sharp edges.

I am using a Dillon trimmer as well.  The giraud I guess chamfers as well?

Yes it does. I realize some who trim with a Dillon don't debur. But I could never load like that. Try both ways, and do what works best for you.

Thanks for your assisstance.

Quoted:
I have been way overdoing it.  It is sharp enough on both in and out to cut you.  I'll try to stop dat.

Thanks guys.