I was loading 308win today. Cases are Lapua on their third loading. FL sized, and trimmed with the Dillon rt1500. I put a Lyman M die in station 1 of the loading toolhead, because everything I read said that I would not need to chamfer. Somewhere I went wrong. I was seeing copper shavings after seating. Then re read M die directions, and it said to flare 1/16" at mouth. I am guessing if I go this route I will need to crimp said brass after seating? I had gone this route because everything I had read says the Dillon size/trim die really shrinks the neck and that I needed to expand it back up to .306 and that the M die would do it and also eliminate chamfering. WIN WIN, or so I thought.
The questions I have now are
1) how bad is this going to affect accuracy?
2)Should I just go back to chamfering before going onto the loading toolhead?
3)Is their a better die for this job than the Lyman to expand?
4) Is their a better die to trim with than the Dillon?
The questions I have now are
1) how bad is this going to affect accuracy?
2)Should I just go back to chamfering before going onto the loading toolhead?
3)Is their a better die for this job than the Lyman to expand?
4) Is their a better die to trim with than the Dillon?
