.308 inside neck

[josebd]

Im using rcbs trim pro 3-way cutter,is that mark anything to worry about?

 

[josebd]

Can' figure out what is causing it?I cleaned the trimmer real good,still does it

 

[Blowby]

Looks like you are taking way too much off the inside and outside chamfers. Material from the inside cut with no pathway to escape being rubbed on the surface.

 

[josebd]

Ive had it set this way for a long time,just started doing this

 

[Richard Coody]

Looks like you are taking way too much off the inside and outside chamfers. Material from the inside cut with no pathway to escape being rubbed on the surface.

+1

many over chamfer. that is why i always reccomend a hand chamfer tool not power.

 

[M-61]

+1

many over chamfer. that is why i always reccomend a hand chamfer tool not power.

YES.

I look at chamfering as one small increase over de-burring a flash hole. To me chamfering is merely removing that 90°edge after trimming, not much more.

 

[josebd]

I can feel a groove,is it ok to load?

 

[mikld]

I'd load them. It appears to be scratching rather than cutting. I agree, too much chamfer. Looks like you have a "knife" edge on the case mouth. I like just enough chamfer on the OD to remove any burr or "rolled" edge and mebbe .010" on the ID...