How about that, looks to me like the .325" was faster. Do you think the 2" longer bar playing a factor?
Every test I have ever ran was 3/8 faster in past. All were ran same day in same wood. It wont change my mind at all.
This was same wood but what 2 weeks later setting out. The 18" 3/8 chain didnt feel right to me either as in self feeding etc. Could be one of those off RS chain out of the box.
The last time I ran this saw in testing if I recall right, I ran my 16" and 3/8 on it when I tested in 12" against ported and stock 346's etc.