My RCBS Manual Trim pro works well and is easy to add power via a drill attachment. However, I prefer the Frankford arsenal universal trimmer with a drill. Easy to set up and you can really do a lot quickly. If you want all in one, check out the powered Lyman Brass smith Xpress.
I've read somewhere where BR shooters blend LT30 and LT32 to make LT31. They say it works well - of course they would because they go to the trouble and risk wasting the powder are they going to say it was a bust?
If you have never been there, I will also suggest this book.
Yellowstone Treasures
It has suggested routes for efficient sightseeing and better, it has a a little short history for each site, geysers, reflecting pools, etc. as you walk the trail and drive point to point. Very interesting. My...
West Yellowstone for the win. Close to the entrance, just the right size, lots of places to stay and eat. Don't know where you are coming from but we flew into SLC and drove up from there. On our way back, we went out the Northeast gate through the Lamar valley and drove down the Chief...