HELP! Lyman Power Trimmer butchers cases!

[30cal_Fun]

I finally got an answer from Lyman.

Their explanation was that trimmers are not designed to remove that much material and that any trimmer would do that (my el cheapo Lee trimmer works fine however). They also said that a dull cutter could very well contribute to the chattering of the cutter.

They offered to send me a new cutter head.

I'll let you know when I have news.

 

[tightgroup tiger]

Try what I said to do in post 23. Lyman is right. If you try to remove to much material the cutter rolls a wire edge to the inside of the mouth of the case and it quits cutting.

Just chamfer off that wire edge on the inside of the case and it will start cutting correctly again.

A new cutter may help but it will do the same thing is you try hogging off to much material at once.

 

[243winxb]

Slow the feed rate. Lube the cutter head. I use CLP.

 

[30cal_Fun]

Tightgroup: I tried deburring and chamfering the edge every few turns but it made no difference whatsoever.

243: I'll try lubing the cutter head, thanks for the tip.